subject:(Streamflow)

Oregon State University

1. Hammond, John C. (John Christophe). Trends in streamflow above and below dams across the Columbia River basin from 1950 to 2012 : assessing sub-basin sensitivity.

Degree: MS, Water Resources Science, 2014, Oregon State University

URL: http://hdl.handle.net/1957/52325

► Climate change, combined with population growth, is expected to exacerbate water scarcity globally. In the Columbia River basin (CRB), streamflow is managed for multiple objectives… (more)

▼ Climate change, combined with population growth, is expected to exacerbate water scarcity globally. In the Columbia River basin (CRB), streamflow is managed for multiple objectives with a network of dams and reservoirs distributed throughout the basin that may mitigate climate change effects on water scarcity. This study quantified trends in daily streamflow from 1950-2012 in 28 pairs of gages above and below dams in the CRB, including the U.S. and Canada. Each gage pair consisted of an above-dam gage that is primarily forested and has little apparent human disturbance and minimal flow regulation or diversions, combined with a below-dam gage immediately downstream of a major dam and reservoir. Monthly streamflow and precipitation for a total of 59 sites was correlated with monthly indices of the Pacific Decadal Oscillation (PDO), the Northern Pacific Index (NPI), the Pacific North America pattern (PNA), and the 700-millibar wind speeds (u700) using Pearson's r. Long-term trends and patterns in daily streamflow and climate data were estimated using linear regression, the Mann-Kendall test, and wavelet analysis. Streamflow was generally weakly correlated with NPI, PNA, and PDO, while positively correlated with upper elevation wind speed at low elevations during wet months. Fewer than half of above-dam gages in the CRB have experienced increasing trends in daily streamflow from mid-March to the beginning of May over the period 1950 to 2012, whereas a majority has experienced decreasing trends from the middle of May to the middle of October. These trends in above-dam basins are consistent with trends expected from climate change, but they also may be affected by legacies of past forest harvest or wildfire. Below dams, reservoir management appears to have overwritten the signal of earlier snowmelt, except in the Boise sub-basin, but long-term declines in late summer flows were evident at half of below-dam sites. Declining summer flows below dams were attributable to a variety of factors, including changes in reservoir management as well as reservoir management that propagates signals from above dam catchments, such as climate change or forest-harvest legacy effects on streamflow. There have been very few significant changes in annual flow volume throughout the basin, and these streamflow trends represent a small percentage of annual flow volume; thus, observed trends appear to be shifts in timing rather than shifts in the annual water balance. The magnitude of 60-yr declines in late summer flow in above-dam catchments represents only a few percent of annual yield, and much less than the storage capacity of the dams, but these long-term changes may be quite important for water yield during the late summer low-flow period. These findings are relevant for strategies to adaptively manage water resources in light of the ongoing planning for renegotiation of the U.S.-Canada Columbia River Treaty. Advisors/Committee Members: Jones, Julia (advisor), Nolin, Anne (committee member).

Subjects/Keywords: streamflow; Streamflow – Columbia River

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APA (6^th Edition):

Hammond, J. C. (. C. (2014). Trends in streamflow above and below dams across the Columbia River basin from 1950 to 2012 : assessing sub-basin sensitivity. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/52325

Chicago Manual of Style (16^th Edition):

Hammond, John C (John Christophe). “Trends in streamflow above and below dams across the Columbia River basin from 1950 to 2012 : assessing sub-basin sensitivity.” 2014. Masters Thesis, Oregon State University. Accessed December 14, 2019. http://hdl.handle.net/1957/52325.

MLA Handbook (7^th Edition):

Hammond, John C (John Christophe). “Trends in streamflow above and below dams across the Columbia River basin from 1950 to 2012 : assessing sub-basin sensitivity.” 2014. Web. 14 Dec 2019.

Vancouver:

Hammond JC(C. Trends in streamflow above and below dams across the Columbia River basin from 1950 to 2012 : assessing sub-basin sensitivity. [Internet] [Masters thesis]. Oregon State University; 2014. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1957/52325.

Council of Science Editors:

Hammond JC(C. Trends in streamflow above and below dams across the Columbia River basin from 1950 to 2012 : assessing sub-basin sensitivity. [Masters Thesis]. Oregon State University; 2014. Available from: http://hdl.handle.net/1957/52325

University of Georgia

2. Li, Guoyuan. Stream temperature and dissolved oxygen modeling in the Lower Flint River Basin, Ga.

Degree: PhD, Forest Resources, 2006, University of Georgia

URL: http://purl.galileo.usg.edu/uga_etd/li_guoyuan_200608_phd

► The tributaries of the Lower Flint River, southwest Georgia, are incised into the upper Floridan semi-confined limestone aquifer, and thus seepage of relatively old groundwater… (more)

▼ The tributaries of the Lower Flint River, southwest Georgia, are incised into the upper Floridan semi-confined limestone aquifer, and thus seepage of relatively old groundwater sustains baseflows and provides some influence over temperature and dissolved oxygen (DO) fluctuations. This hydrologic and geologic setting creates unique aquatic habitats. Groundwater withdrawals for center-pivot irrigation and proposed water supply municipal reservoirs threaten to exacerbate low flow conditions during summer droughts, which may negatively alter stream temperature and dissolved oxygen conditions. To evaluate possible effects of human modifications to stream habitat, we developed a one-dimensional Dynamic stream Dissolved Oxygen and Temperature (DDOT) model. DDOT was constructed with both Continuously Stirred Tank Reactor (CSTR) based and the one-dimensional Advection-Dispersion-Reaction Equation (ADRE) based formulations, and integrates the effects of dynamic streamflow and groundwater inputs, riparian shading, channel geometry, and channel hydraulics on the spatial and temporal dissolved oxygen and temperature dynamics. The major contributions of model DDOT to existing models include the integration of an easy-to-use SHADE module and a BED module. The SHADE module generates accurate estimation of riparian vegetation shading to direct solar radiation on stream water surface, while the BED module calculates the streambed layer vertical temperature and DO profiles that are necessary to account for groundwater input effect on surface water quality. The model was calibrated with field data collected in 2002 and evaluated with data from 2003, years in which flow and water quality behavior were very different. The two formulations provided nearly equivalent simulations. The model performed well and allowed robust exploration of system sensitivities and responses to management actions. With DDOT, we conducted sensitivity analysis of stream temperature and DO to the upstreamflow input, groundwater discharge, stream riparian vegetation shading, and stream width. It indicated that 1)reduced instreamflow rate leads to increased stream temperature and decreases stream DO in summer, 2)reduced groundwater input exacerbates stream temperature problems,especially during drought seasons, 3) reduced groundwater input does not exacerbate stream DO problems due to the fact that ground water itself has a DO concentration as low as 5 mg/L, 4)problematic DO levels occur only at very low flows, and 5)stream width and riparian vegetation have strong effects on stream temperature and DO levels. The model was then used to predict time series stream temperature and DO with long-term time series (1950 - 2003) streamflow data simulated by Hydrological Simulation Program - FORTRAN (HSPF) model and groundwater discharge data simulated by MODular Finite-Element (MODFE) model under three different agricultural pumping scenarios for Ichawaynochaway Creek and Spring Creek watersheds in the Lower Flint River Basin. The simulation indicated that the spatial… Advisors/Committee Members: C. Rhett Jackson.

Subjects/Keywords: Streamflow

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APA (6^th Edition):

Li, G. (2006). Stream temperature and dissolved oxygen modeling in the Lower Flint River Basin, Ga. (Doctoral Dissertation). University of Georgia. Retrieved from http://purl.galileo.usg.edu/uga_etd/li_guoyuan_200608_phd

Chicago Manual of Style (16^th Edition):

Li, Guoyuan. “Stream temperature and dissolved oxygen modeling in the Lower Flint River Basin, Ga.” 2006. Doctoral Dissertation, University of Georgia. Accessed December 14, 2019. http://purl.galileo.usg.edu/uga_etd/li_guoyuan_200608_phd.

MLA Handbook (7^th Edition):

Li, Guoyuan. “Stream temperature and dissolved oxygen modeling in the Lower Flint River Basin, Ga.” 2006. Web. 14 Dec 2019.

Vancouver:

Li G. Stream temperature and dissolved oxygen modeling in the Lower Flint River Basin, Ga. [Internet] [Doctoral dissertation]. University of Georgia; 2006. [cited 2019 Dec 14]. Available from: http://purl.galileo.usg.edu/uga_etd/li_guoyuan_200608_phd.

Council of Science Editors:

Li G. Stream temperature and dissolved oxygen modeling in the Lower Flint River Basin, Ga. [Doctoral Dissertation]. University of Georgia; 2006. Available from: http://purl.galileo.usg.edu/uga_etd/li_guoyuan_200608_phd

Oregon State University

3. Smith, Richard D. (Richard Dean), 1950-. Streamflow and bedload transport in an obstruction-affected, gravel-bed stream.

Degree: PhD, Geosciences, 1990, Oregon State University

URL: http://hdl.handle.net/1957/9289

► The mechanisms of pool maintenance were investigated in a small (width = 10 m, drainage area = 18 km2), gravel-bed stream where pools are commonly… (more)

▼ The mechanisms of pool maintenance were investigated in a small (width = 10 m, drainage area = 18 km2), gravel-bed stream where pools are commonly associated with large, in-channel obstructions. Measurements of boundary shear stress, scour and fill of the stream bed, and bedload transport rate and grain-size distribution were made in a pool associated with a single, large woody debris obstruction. Contrary to the well-known shear stress (or velocity) reversal hypothesis, which has been invoked to explain maintenance of pool-riffle structure, rate of increase with increasing discharge of the temporal-mean, near-bed velocity and boundary shear stress was the same at the pool as at pool head and pool tail locations. At a discharge 1.4 times bankfull, near-bed velocity was 102 cm/s at the pool head and tail and 82.1 cm/s at the pool center. Boundary shear stress was 25.1, 20.9, and 15.3 dynes/cm2 at the pool head, tail, and center respectively. Furthermore, with increasing discharge no systematic spatial reversal of maximum bedload transport rate or of bedload competence, as predicted by the shear stress reversal model, was observed. A conceptual "turbulent scour" model is presented to explain maintenance of pools associated with large, in-channel obstructions. This model relies on analogy to published descriptions of processes that maintain scour pools at bridge piers. According to this model, temporal-mean boundary shear stress is enhanced by instantaneous turbulent velocity fluctuations created by the interaction of streamflow with the obstruction, thereby increasing instantaneous boundary shear stress in the pool. This explains the observed approximate equality of bedload transport rate and grain size distribution upstream, within, and downstream of the pool, despite lower mean shear stress in the pool. The "turbulent scour" model accounts for the observed balance, over time periods much shorter than the duration of individual storm hydrographs, of bedload import and export for the pool, in response to apparent changes in sediment supply. This explains the approximately constant pool morphology despite bedload transport rates as large as 8300 kg/hr-m. Advisors/Committee Members: Swanson, Frederick (advisor), Beschta, Bob (committee member).

Subjects/Keywords: Streamflow

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APA (6^th Edition):

Smith, Richard D. (Richard Dean), 1. (1990). Streamflow and bedload transport in an obstruction-affected, gravel-bed stream. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/9289

Chicago Manual of Style (16^th Edition):

Smith, Richard D. (Richard Dean), 1950-. “Streamflow and bedload transport in an obstruction-affected, gravel-bed stream.” 1990. Doctoral Dissertation, Oregon State University. Accessed December 14, 2019. http://hdl.handle.net/1957/9289.

MLA Handbook (7^th Edition):

Smith, Richard D. (Richard Dean), 1950-. “Streamflow and bedload transport in an obstruction-affected, gravel-bed stream.” 1990. Web. 14 Dec 2019.

Vancouver:

Smith, Richard D. (Richard Dean) 1. Streamflow and bedload transport in an obstruction-affected, gravel-bed stream. [Internet] [Doctoral dissertation]. Oregon State University; 1990. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1957/9289.

Council of Science Editors:

Smith, Richard D. (Richard Dean) 1. Streamflow and bedload transport in an obstruction-affected, gravel-bed stream. [Doctoral Dissertation]. Oregon State University; 1990. Available from: http://hdl.handle.net/1957/9289

Oregon State University

4. Johnson, Neal S. A bioeconomic analysis of altering instream flows anadromous fish production and competing demands for water in the John Day River basin, Oregon.

Degree: MS, Agricultural and Resource Economics, 1987, Oregon State University

URL: http://hdl.handle.net/1957/26855

► The growing demand for water in the arid regions of the West increases the need for optimal allocation of water among competing uses. An efficient… (more)

▼ The growing demand for water in the arid regions of the West increases the need for optimal allocation of water among competing uses. An efficient allocation of water between instream and out-of-stream uses has been impeded by institutional constraints and the scarcity of information regarding instream flow benefits. The objectives of this thesis were to provide preliminary economic data on the value of instream water in "producing" recreational fishing and to examine the effect of forestry, agriculture, and livestock practices on temporal streamflow patterns and anadromous fish production. The steelhead trout (Salmo gairdneri) sport fishery within the John Day River basin in north-central Oregon provided the setting for this research. The interdisciplinary methodology employed in estimating the marginal value of water with respect to steelhead production consisted of two tasks. The first task involved valuing a marginal change in the quality of the steelhead recreational fishery. The contingent valuation method (CVM) was selected for this purpose. Both open- and closed-ended willingness-to-pay (WTP) questions were included in a questionnaire administered to John Day River steelhead anglers during the 1986/87 steelhead fishing season. Survey data were analyzed to arrive at individual and aggregate bid functions relating WTP to expected angling success rates. Results indicate that, under current conditions, the average angler is willing to pay approximately 7.20 to catch an additional steelhead. The second task of the instream water valuation methodology was directed at deriving a streamflow/steelhead production relationship. By including variables influencing steelhead production in a Ricker stock-recruitment model, it was possible to develop a model which could be estimated using linear regression techniques. Some difficulty arose, however, with interpretation of the model due to the unavailability of cohort escapement data and the subsequent use of standing crop data. While possibly masking the true magnitude of streamflow's effect on fish production, this drawback was not deemed limiting within the general context of the interdisciplinary methodology. Results of the biological model conformed to a priori expectations. Increases in summer and winter streamflows led to increased steelhead survival, whereas higher spring flows increased mortality levels. Other results indicate that the John Day Dam was responsible for a 31.5 percent decline in the population index for the 1969-1983 period. Combining the economic and biological results into one equation yielded an estimate of the marginal value of summer instream water in "producing" recreational steelhead angling. Similar equations were developed for winter and spring flows. The marginal value of water in producing recreational steelhead fishing within the John Day basin was estimated at 0.56 per acre-foot for summer flows, 0.046 for winter flows, and -0.075 for spring flows. By including out-of-basin benefits, these… Advisors/Committee Members: Adams, Richard M. (advisor).

Subjects/Keywords: Streamflow

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APA (6^th Edition):

Johnson, N. S. (1987). A bioeconomic analysis of altering instream flows anadromous fish production and competing demands for water in the John Day River basin, Oregon. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/26855

Chicago Manual of Style (16^th Edition):

Johnson, Neal S. “A bioeconomic analysis of altering instream flows anadromous fish production and competing demands for water in the John Day River basin, Oregon.” 1987. Masters Thesis, Oregon State University. Accessed December 14, 2019. http://hdl.handle.net/1957/26855.

MLA Handbook (7^th Edition):

Johnson, Neal S. “A bioeconomic analysis of altering instream flows anadromous fish production and competing demands for water in the John Day River basin, Oregon.” 1987. Web. 14 Dec 2019.

Vancouver:

Johnson NS. A bioeconomic analysis of altering instream flows anadromous fish production and competing demands for water in the John Day River basin, Oregon. [Internet] [Masters thesis]. Oregon State University; 1987. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1957/26855.

Council of Science Editors:

Johnson NS. A bioeconomic analysis of altering instream flows anadromous fish production and competing demands for water in the John Day River basin, Oregon. [Masters Thesis]. Oregon State University; 1987. Available from: http://hdl.handle.net/1957/26855

Oregon State University

5. Kelly, Valerie. Influence of streamflow regime and biotic interactions on fish assemblage structure in rivers of the northern Great Plains.

Degree: PhD, Fisheries Science, 2008, Oregon State University

URL: http://hdl.handle.net/1957/10123

► This study evaluates the functional organization of stream fish assemblages in response to streamflow factors and biotic interactions across a range of spatial scale. The… (more)

▼ This study evaluates the functional organization of stream fish assemblages in response to streamflow factors and biotic interactions across a range of spatial scale. The study area for this project includes 109 stream reaches located on tributaries to the upper Missouri River in the northern Great Plains. Fish distribution data was provided by the U.S. Environmental Protection Agency’s Environmental Monitoring and Assessment Program. The analysis examined assemblage structure in terms of the distribution of ecological traits along gradients of streamflow regime, and proceeded in several phases. First, a methodology was assembled for estimating ecologically relevant metrics to describe streamflow regime where streamflow data were not available. Second, co-occurrence patterns for species and their traits were examined at two levels of spatial scale in order to evaluate the relative role of environmental filtering and competitive exclusion. Third, a structural equation analysis was conducted to examine the role of specific components of streamflow regime as constraints on the expression of fish life-history strategies within local assemblages, including an evaluation of factors across a range of scale that were associated with flow patterns. This analysis also incorporated an aggregate measure of the potential for biotic interactions at the assemblage scale. Results for the streamflow analysis describe distinctive regional patterns of flow regime across the study area. A clear snowmelt signature was observed for streams in the western mountains, with little variability in peak-flow magnitude or timing. These streams contrast with those in the lowlands further east, which were consistently characterized by greater variability in peak-flow timing and magnitude as well as higher probability of intermittent flow. Species co-occurrence patterns were consistent with a strong tendency for local coexistence to be mediated primarily by present or past competition, resulting in spatial segregation of species when they share similar feeding strategies. At the regional scale, a contrasting pattern was observed where species with similar life-history traits tended to cluster together. These results indicate that critical niche dimensions may be defined at several levels of scale. Furthermore, these dimensions apparently are associated with ecological processes that can oppose one another across scale. Finally, SEM results indicate that small, short-lived opportunistic species were significantly influenced by regional patterns of streamflow variability while large, long-lived periodic species responded more strongly to variability at the smaller scale of the stream network. On the other hand, species with strategies to maximize juvenile survival (i.e. equilibrium strategists) showed negligible response to flow variability at any scale. These results presumably reflect the versatility of this strategy regarding physical habitat conditions. This research demonstrates that stream fish assemblages are structured at multiple levels of… Advisors/Committee Members: Landers, Dixon H. (advisor), Johnson, Sherri (committee member).

Subjects/Keywords: streamflow regime; Streamflow – Missouri River Watershed

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APA (6^th Edition):

Kelly, V. (2008). Influence of streamflow regime and biotic interactions on fish assemblage structure in rivers of the northern Great Plains. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/10123

Chicago Manual of Style (16^th Edition):

Kelly, Valerie. “Influence of streamflow regime and biotic interactions on fish assemblage structure in rivers of the northern Great Plains.” 2008. Doctoral Dissertation, Oregon State University. Accessed December 14, 2019. http://hdl.handle.net/1957/10123.

MLA Handbook (7^th Edition):

Kelly, Valerie. “Influence of streamflow regime and biotic interactions on fish assemblage structure in rivers of the northern Great Plains.” 2008. Web. 14 Dec 2019.

Vancouver:

Kelly V. Influence of streamflow regime and biotic interactions on fish assemblage structure in rivers of the northern Great Plains. [Internet] [Doctoral dissertation]. Oregon State University; 2008. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1957/10123.

Council of Science Editors:

Kelly V. Influence of streamflow regime and biotic interactions on fish assemblage structure in rivers of the northern Great Plains. [Doctoral Dissertation]. Oregon State University; 2008. Available from: http://hdl.handle.net/1957/10123

Brock University

6. Meyers, Michael J. Flow regime prediction via froude number calculation in a rock-bedded stream .

Degree: Department of Earth Sciences, 2010, Brock University

URL: http://hdl.handle.net/10464/3073

► Mathematical predictions of flow conditions along a steep gradient rock bedded stream are examined. Stream gage discharge data and Manning's Equation are used to calculate… (more)

Subjects/Keywords: Stream measurements; Streamflow

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APA (6^th Edition):

Meyers, M. J. (2010). Flow regime prediction via froude number calculation in a rock-bedded stream . (Thesis). Brock University. Retrieved from http://hdl.handle.net/10464/3073

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Meyers, Michael J. “Flow regime prediction via froude number calculation in a rock-bedded stream .” 2010. Thesis, Brock University. Accessed December 14, 2019. http://hdl.handle.net/10464/3073.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Meyers, Michael J. “Flow regime prediction via froude number calculation in a rock-bedded stream .” 2010. Web. 14 Dec 2019.

Vancouver:

Meyers MJ. Flow regime prediction via froude number calculation in a rock-bedded stream . [Internet] [Thesis]. Brock University; 2010. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/10464/3073.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Meyers MJ. Flow regime prediction via froude number calculation in a rock-bedded stream . [Thesis]. Brock University; 2010. Available from: http://hdl.handle.net/10464/3073

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Montana State University

7. Leone, Alex Michael. Impacts of low summer streamflows on water resources in the Jefferson Valley : historical responses and future challenges.

Degree: College of Letters & Sciences, 2016, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/9838

► In an attempt to understand the complex interrelationships between climate, water infrastructure regimes, and water governance this thesis examines relationships between drought and water use… (more)

▼ In an attempt to understand the complex interrelationships between climate, water infrastructure regimes, and water governance this thesis examines relationships between drought and water use in the Jefferson River Basin in southwest Montana. The Jefferson River is one of the three great headwater streams of the Missouri River and is itself comprised of the Beaverhead, Big Hole and Ruby Rivers, encompassing a substantial drainage basin of 9,532 sq. miles. The Jefferson's unique hydrological position inherently situates the basin "at the end of the line" of water users and flows at its confluence have plummeted to 200 cubic feet per second (cfs) during extreme drought periods, leaving little water in the river to appease appropriators along the river's remaining 80 miles. The Jefferson River (and all of its important tributaries) is highly utilized for agriculture, resulting in chronic dewatering during peak irrigation demand (typically July through mid-September). Persistent water scarcities over the last 15 years have tested the Basin's ability to sustain historic levels of agricultural production and maintain a commercial sports fishery. This thesis provides a resilience assessment of water resources in Jefferson Basin. RA's attempt to conceptualize dynamic interactions between linked social and ecological systems (SES's). Analysis of complex human use systems (SES's) is inherently interdisciplinary and necessitates a mixed methods approach. The RA completed for this thesis integrated physical analyses of the water use system (utilizing GIS, hydrology, climate and demographic data) with a qualitative survey of water stakeholders with the goal of understanding the processes that drive the Jefferson SES and identifying weaknesses that reduce resilience. Over the last 30 years the Jefferson Basin has benefited from a unique subset of water users and natural resource managers that have successfully worked to improve conditions in the face of extreme environmental challenges. This RA found that although it is highly likely that the Jefferson will be challenged by extreme conditions in the future (related to a changing climate), it is also evident that there is potential for the basin to transition into alternate and more resilient regimes. Advisors/Committee Members: Chairperson, Graduate Committee: Julia Hobson Haggerty (advisor).

Subjects/Keywords: Streamflow.; Droughts.; Rivers.

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APA (6^th Edition):

Leone, A. M. (2016). Impacts of low summer streamflows on water resources in the Jefferson Valley : historical responses and future challenges. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/9838

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Leone, Alex Michael. “Impacts of low summer streamflows on water resources in the Jefferson Valley : historical responses and future challenges.” 2016. Thesis, Montana State University. Accessed December 14, 2019. https://scholarworks.montana.edu/xmlui/handle/1/9838.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Leone, Alex Michael. “Impacts of low summer streamflows on water resources in the Jefferson Valley : historical responses and future challenges.” 2016. Web. 14 Dec 2019.

Vancouver:

Leone AM. Impacts of low summer streamflows on water resources in the Jefferson Valley : historical responses and future challenges. [Internet] [Thesis]. Montana State University; 2016. [cited 2019 Dec 14]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/9838.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Leone AM. Impacts of low summer streamflows on water resources in the Jefferson Valley : historical responses and future challenges. [Thesis]. Montana State University; 2016. Available from: https://scholarworks.montana.edu/xmlui/handle/1/9838

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Texas A&M University

8. Highfield, Wesley E. Section 404 permitting in coastal Texas from 1996 - 2003: patterns and effects on streamflow.

Degree: 2009, Texas A&M University

URL: http://hdl.handle.net/1969.1/ETD-TAMU-3077

► This study explores the spatial-temporal patterns of Section 404 permitting program under the Clean Water Act and examines its impact on mean and peak annual… (more)

Subjects/Keywords: Section 404; Wetlands; Peak Streamflow

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APA (6^th Edition):

Highfield, W. E. (2009). Section 404 permitting in coastal Texas from 1996 - 2003: patterns and effects on streamflow. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/ETD-TAMU-3077

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Highfield, Wesley E. “Section 404 permitting in coastal Texas from 1996 - 2003: patterns and effects on streamflow.” 2009. Thesis, Texas A&M University. Accessed December 14, 2019. http://hdl.handle.net/1969.1/ETD-TAMU-3077.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Highfield, Wesley E. “Section 404 permitting in coastal Texas from 1996 - 2003: patterns and effects on streamflow.” 2009. Web. 14 Dec 2019.

Vancouver:

Highfield WE. Section 404 permitting in coastal Texas from 1996 - 2003: patterns and effects on streamflow. [Internet] [Thesis]. Texas A&M University; 2009. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-3077.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Highfield WE. Section 404 permitting in coastal Texas from 1996 - 2003: patterns and effects on streamflow. [Thesis]. Texas A&M University; 2009. Available from: http://hdl.handle.net/1969.1/ETD-TAMU-3077

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

9. Zeb, Aurang. Characteristics of stream low flows in eastern Oregon : their relationship with precipitation and watershed parameters.

Degree: MS, Forest Engineering, 1992, Oregon State University

URL: http://hdl.handle.net/1957/9771

► Characteristics of low flows of nine streams in eastern Oregon were explored using long-term streamflow records. Year-to-year dependence of low flows is highly significant for… (more)

Subjects/Keywords: Streamflow – Oregon

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APA (6^th Edition):

Zeb, A. (1992). Characteristics of stream low flows in eastern Oregon : their relationship with precipitation and watershed parameters. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/9771

Chicago Manual of Style (16^th Edition):

Zeb, Aurang. “Characteristics of stream low flows in eastern Oregon : their relationship with precipitation and watershed parameters.” 1992. Masters Thesis, Oregon State University. Accessed December 14, 2019. http://hdl.handle.net/1957/9771.

MLA Handbook (7^th Edition):

Zeb, Aurang. “Characteristics of stream low flows in eastern Oregon : their relationship with precipitation and watershed parameters.” 1992. Web. 14 Dec 2019.

Vancouver:

Zeb A. Characteristics of stream low flows in eastern Oregon : their relationship with precipitation and watershed parameters. [Internet] [Masters thesis]. Oregon State University; 1992. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1957/9771.

Council of Science Editors:

Zeb A. Characteristics of stream low flows in eastern Oregon : their relationship with precipitation and watershed parameters. [Masters Thesis]. Oregon State University; 1992. Available from: http://hdl.handle.net/1957/9771

Oregon State University

10. Stack, William Robert. Factors influencing pool morphology in Oregon coastal streams.

Degree: MS, Forest Engineering, 1988, Oregon State University

URL: http://hdl.handle.net/1957/9822

► Pool morphology was surveyed in 19 stream sections within the central Oregon Coast Range. Pool locations, sizes, spacings, numbers, and factors affecting pool formation were… (more)

▼ Pool morphology was surveyed in 19 stream sections within the central Oregon Coast Range. Pool locations, sizes, spacings, numbers, and factors affecting pool formation were determined for each stream section. All sections were underlain by sedimentary rocks, had drainage areas ranging from 1.3 to 17.3 km², and had average water surface slopes from 0.5 to 5.6%. Stream sections were divided into two categories: (1) low timber harvest (<20% of watershed area harvested) and (2) high timber harvest (>45% of watershed area harvested). A "Rapid Bed Profile" (REP) technique was developed to measure residual pool characteristics in each stream section. The REP technique is a survey method that requires only thalweg depths and the average reach gradient. The technique was effective for classifying pools since it is objective, independent of flow, accurate, and time-efficient. Residual pool size characteristics (e.g., volume) for the low timber harvest stream sections were positively correlated to a power function of drainage area. Stream sections with beaver dams, especially those with at least 10% of their reach length in beaver-caused pools, typically had larger residual pools. Pool size characteristics for high timber harvest stream sections were not different from low timber harvest stream sections. The average spacing between residual pools was positively correlated to a power function of drainage area for the low timber harvest stream sections (a negative correlation was found between the number of pools and drainage area). High timber harvest stream sections may be associated with an increased spacing and a decreased number of pools for larger watersheds (i.e., greater than 8 km²). However, the potential effects of previous large storms, changes in timber management practices, and/or the small number of streams surveyed precluded a definitive conclusion. The frequency of occurrence of pool forming processes (e.g., plunge, deflection) was correlated with average water surface slope for the low timber harvest stream sections. The percentage of plunge and impoundment processes increased as water surface slope increased while the percentage of deflection and underflow processes decreased. Two high timber harvest streams had a higher percentage of plunge pools than expected based on the relationships established for the low timber harvest streams. The frequency of occurrence of wood and boulder pool forming elements was correlated with an index of stream power (drainage area times average water slope) for the low timber harvest stream sections. As the stream power index increased, the relative frequency of wood-formed pools decreased while boulder-formed pools increased. Wood and boulder combined, generally, made up 80% of the pool forming elements. The frequency of occurrence of pool forming elements was not different between low and high timber harvest stream sections.

Subjects/Keywords: Streamflow – Oregon

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APA (6^th Edition):

Stack, W. R. (1988). Factors influencing pool morphology in Oregon coastal streams. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/9822

Chicago Manual of Style (16^th Edition):

Stack, William Robert. “Factors influencing pool morphology in Oregon coastal streams.” 1988. Masters Thesis, Oregon State University. Accessed December 14, 2019. http://hdl.handle.net/1957/9822.

MLA Handbook (7^th Edition):

Stack, William Robert. “Factors influencing pool morphology in Oregon coastal streams.” 1988. Web. 14 Dec 2019.

Vancouver:

Stack WR. Factors influencing pool morphology in Oregon coastal streams. [Internet] [Masters thesis]. Oregon State University; 1988. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1957/9822.

Council of Science Editors:

Stack WR. Factors influencing pool morphology in Oregon coastal streams. [Masters Thesis]. Oregon State University; 1988. Available from: http://hdl.handle.net/1957/9822

Oregon State University

11. Widner, Gregory L. Summer low flow characteristics of forest streams in northeast Oregon.

Degree: MS, Forest Engineering, 1991, Oregon State University

URL: http://hdl.handle.net/1957/9893

► Summer low flow characteristics of six forest streams in Northeast Oregon were examined using long term streamflow records. Time series and trend analysis revealed highly… (more)

Subjects/Keywords: Streamflow – Oregon

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APA (6^th Edition):

Widner, G. L. (1991). Summer low flow characteristics of forest streams in northeast Oregon. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/9893

Chicago Manual of Style (16^th Edition):

Widner, Gregory L. “Summer low flow characteristics of forest streams in northeast Oregon.” 1991. Masters Thesis, Oregon State University. Accessed December 14, 2019. http://hdl.handle.net/1957/9893.

MLA Handbook (7^th Edition):

Widner, Gregory L. “Summer low flow characteristics of forest streams in northeast Oregon.” 1991. Web. 14 Dec 2019.

Vancouver:

Widner GL. Summer low flow characteristics of forest streams in northeast Oregon. [Internet] [Masters thesis]. Oregon State University; 1991. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1957/9893.

Council of Science Editors:

Widner GL. Summer low flow characteristics of forest streams in northeast Oregon. [Masters Thesis]. Oregon State University; 1991. Available from: http://hdl.handle.net/1957/9893

University of California – Irvine

12. Lawrence, Collin. Glaciers and freshwater resources in a changing climate.

Degree: Earth System Science, 2014, University of California – Irvine

URL: http://www.escholarship.org/uc/item/8vd100d2

► One of the most rapid transformations forced by recent global climate change is the recession of glaciers worldwide. The study of the fate of glacier… (more)

▼ One of the most rapid transformations forced by recent global climate change is the recession of glaciers worldwide. The study of the fate of glacier meltwater lies at the intersection of the cryosphere and hydrologic cycle, making it a unique interdisciplinary study of the Earth system. A substantial body of research has focused on the how the changing volume of glaciers is contributing to sea level rise. However, comparatively fewer studies have investigated how glacier meltwater moves over the land surface to the oceans, impacting runoff and freshwater resources. Using models, in situ data, and remote sensing observations, this work seeks to quantify glacier contributions to runoff at large scales.First, a temperature index melt model is developed to estimate mass balance for the Gulkana Glacier, Alaska, US. The model is forced with meteorological conditions taken near the surface of the glacier. Results from the model are compared with 40 years of glacier stake data recorded by the US Geological Survey.Next, glacier contributions to streamflow are estimated for eight highly glaciated river basins in high mountain Asia (HMA). This work utilizes a new, globally complete glacier inventory along with remotely sensed estimates of glacier recession to quantify glacier storage change for 2003 - 2009. Results are integrated with the HydroSHEDS (Hydrological Data and Maps Based on Shuttle Elevation Derivatives at Multiple Scales) river network to simulate how glacier melt in this region moves downstream. Runoff data from previous literature and simulations from the Global Land Data Assimilation System (GLDAS) are used throughout the study region to quantify the fraction of streamflow due to glacier melt.Finally, the combined land-atmosphere water balance is used to estimate basin runoff for the HMA region. Terrestrial water storage changes observed by the Gravity Recovery and Climate Experiment (GRACE) satellites are combined with atmospheric reanalysis from the ERA-Interim Project to provide a remote sensing estimate of runoff. These are compared with runoff simulations from the various GLDAS models.

Subjects/Keywords: Hydrologic sciences; glaciers; hydrology; streamflow

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APA (6^th Edition):

Lawrence, C. (2014). Glaciers and freshwater resources in a changing climate. (Thesis). University of California – Irvine. Retrieved from http://www.escholarship.org/uc/item/8vd100d2

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lawrence, Collin. “Glaciers and freshwater resources in a changing climate.” 2014. Thesis, University of California – Irvine. Accessed December 14, 2019. http://www.escholarship.org/uc/item/8vd100d2.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lawrence, Collin. “Glaciers and freshwater resources in a changing climate.” 2014. Web. 14 Dec 2019.

Vancouver:

Lawrence C. Glaciers and freshwater resources in a changing climate. [Internet] [Thesis]. University of California – Irvine; 2014. [cited 2019 Dec 14]. Available from: http://www.escholarship.org/uc/item/8vd100d2.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lawrence C. Glaciers and freshwater resources in a changing climate. [Thesis]. University of California – Irvine; 2014. Available from: http://www.escholarship.org/uc/item/8vd100d2

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Montana State University

13. Swindell, Bryan Cameron. Tree-ring reconstructed streamflow and drought history for the Bighorn River Basin, Wyoming.

Degree: College of Letters & Science, 2011, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/2384

► Predictions made by climate models suggest that in the coming decades the western United States will experience warmer temperatures, as well as changes in streamflow… (more)

Subjects/Keywords: Tree-rings.; Dendrochronology.; Streamflow.; Droughts.

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APA (6^th Edition):

Swindell, B. C. (2011). Tree-ring reconstructed streamflow and drought history for the Bighorn River Basin, Wyoming. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/2384

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Swindell, Bryan Cameron. “Tree-ring reconstructed streamflow and drought history for the Bighorn River Basin, Wyoming.” 2011. Thesis, Montana State University. Accessed December 14, 2019. https://scholarworks.montana.edu/xmlui/handle/1/2384.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Swindell, Bryan Cameron. “Tree-ring reconstructed streamflow and drought history for the Bighorn River Basin, Wyoming.” 2011. Web. 14 Dec 2019.

Vancouver:

Swindell BC. Tree-ring reconstructed streamflow and drought history for the Bighorn River Basin, Wyoming. [Internet] [Thesis]. Montana State University; 2011. [cited 2019 Dec 14]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/2384.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Swindell BC. Tree-ring reconstructed streamflow and drought history for the Bighorn River Basin, Wyoming. [Thesis]. Montana State University; 2011. Available from: https://scholarworks.montana.edu/xmlui/handle/1/2384

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

14. Landon, Kyle C. Ensemble-based data assimilation and depth inversion on the Kootenai River, ID, USA.

Degree: M.Oc.E., Civil Engineering, 2012, Oregon State University

URL: http://hdl.handle.net/1957/33794

► Velocity measurements from drifter GPS records are assimilated and used in an ensemble-based inversion technique to extract the river bathymetry. The method is tested on… (more)

Subjects/Keywords: Data Assimilation; Streamflow – Kootenai River

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APA (6^th Edition):

Landon, K. C. (2012). Ensemble-based data assimilation and depth inversion on the Kootenai River, ID, USA. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/33794

Chicago Manual of Style (16^th Edition):

Landon, Kyle C. “Ensemble-based data assimilation and depth inversion on the Kootenai River, ID, USA.” 2012. Masters Thesis, Oregon State University. Accessed December 14, 2019. http://hdl.handle.net/1957/33794.

MLA Handbook (7^th Edition):

Landon, Kyle C. “Ensemble-based data assimilation and depth inversion on the Kootenai River, ID, USA.” 2012. Web. 14 Dec 2019.

Vancouver:

Landon KC. Ensemble-based data assimilation and depth inversion on the Kootenai River, ID, USA. [Internet] [Masters thesis]. Oregon State University; 2012. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1957/33794.

Council of Science Editors:

Landon KC. Ensemble-based data assimilation and depth inversion on the Kootenai River, ID, USA. [Masters Thesis]. Oregon State University; 2012. Available from: http://hdl.handle.net/1957/33794

McMaster University

15. Razavi, Tara. Streamflow Estimation in Ungauged Basins Using Regionalization Methods.

Degree: PhD, 2014, McMaster University

URL: http://hdl.handle.net/11375/16325

►

Considering the growing population of the earth and the decreasing water resources, the need for reliable and accurate estimation and prediction of streamflow time series… (more)

▼

Considering the growing population of the earth and the decreasing water resources, the need for reliable and accurate estimation and prediction of streamflow time series is increasing. Due to the climate change and anthropogenic impacts on hydrologic systems, the estimation and prediction of streamflow time series remains a challenge and it is even more difficult for regions where watersheds are ungauged in terms of streamflow. The research presented in this dissertation, was scoped to develop a reliable and accurate methodology for daily streamflow prediction/estimation in ungauged watersheds. The study area in this research encompasses Ontario natural watersheds with various areas spread in different regions. In this research work nonlinear data-driven methods such as Artificial Neural Networks (ANN) and conventional methods such as Inverse Distance Weighted (IDW) as well as their combination are investigated for different steps in streamflow regionalization. As such, Watershed classification prior to regionalization is investigated as an independent step in regionalization. Nonlinear classification techniques such as Nonlinear Principal Component Analysis (NLPCA) and Self-Organizing Maps (SOMs) are investigated for watershed classification and finally a methodology which combines watershed classification, streamflow regionalization and hydrologic model optimization is presented for reliable streamflow prediction in ungauged basins. The results of this research demonstrated that a multi-model approach which combines the results of proposed individual models based on their performance for the gauged similar and close watersheds to the ungauged ones can be a reliable streamflow regionalization model for all watersheds in Ontario. Physical similarity and spatial proximity of watersheds was found to play an important role in similarity between the streamflow time series, hence, it was incorporated in all individual models. It was also shown that watershed classification can significantly improve the results of streamflow regionalization. Investigated nonlinear watershed classification techniques applicable to ungauged watersheds can capture the nonlinearity in watersheds physical and hydrological attributes and classify watersheds homogeneously. It was also found that the combination of watershed classification techniques, regionalization techniques and hydrologic models can impact the results of streamflow regionalization substantially. Furthermore, to evaluate the uncertainty associated with the predictions in ungauged watersheds, an ensemble modelling framework is proposed to generate ensemble predictions based on the proposed regionalization model.

Dissertation

Doctor of Philosophy (PhD)

Advisors/Committee Members: Coulibaly, Paulin, Civil Engineering.

Subjects/Keywords: Ungauged basins; Streamflow Regionalization

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APA (6^th Edition):

Razavi, T. (2014). Streamflow Estimation in Ungauged Basins Using Regionalization Methods. (Doctoral Dissertation). McMaster University. Retrieved from http://hdl.handle.net/11375/16325

Chicago Manual of Style (16^th Edition):

Razavi, Tara. “Streamflow Estimation in Ungauged Basins Using Regionalization Methods.” 2014. Doctoral Dissertation, McMaster University. Accessed December 14, 2019. http://hdl.handle.net/11375/16325.

MLA Handbook (7^th Edition):

Razavi, Tara. “Streamflow Estimation in Ungauged Basins Using Regionalization Methods.” 2014. Web. 14 Dec 2019.

Vancouver:

Razavi T. Streamflow Estimation in Ungauged Basins Using Regionalization Methods. [Internet] [Doctoral dissertation]. McMaster University; 2014. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/11375/16325.

Council of Science Editors:

Razavi T. Streamflow Estimation in Ungauged Basins Using Regionalization Methods. [Doctoral Dissertation]. McMaster University; 2014. Available from: http://hdl.handle.net/11375/16325

University of Cape Town

16. Lillie, Edwin. Friction equation for uniform flow in channels of large relative roughness.

Degree: Image, Civil Engineering, 1989, University of Cape Town

URL: http://hdl.handle.net/11427/18793

► This thesis is an experimental investigation of the roughness problem in open channel flow. A literature review is given on the previous research done on… (more)

Subjects/Keywords: Friction; Streamflow

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APA (6^th Edition):

Lillie, E. (1989). Friction equation for uniform flow in channels of large relative roughness. (Thesis). University of Cape Town. Retrieved from http://hdl.handle.net/11427/18793

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lillie, Edwin. “Friction equation for uniform flow in channels of large relative roughness.” 1989. Thesis, University of Cape Town. Accessed December 14, 2019. http://hdl.handle.net/11427/18793.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lillie, Edwin. “Friction equation for uniform flow in channels of large relative roughness.” 1989. Web. 14 Dec 2019.

Vancouver:

Lillie E. Friction equation for uniform flow in channels of large relative roughness. [Internet] [Thesis]. University of Cape Town; 1989. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/11427/18793.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lillie E. Friction equation for uniform flow in channels of large relative roughness. [Thesis]. University of Cape Town; 1989. Available from: http://hdl.handle.net/11427/18793

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Waterloo

17. Pellerin, Jennifer. Updating the Canadian Reference Hydrometric Basin Network to detect climate-related trends in streamflow.

Degree: 2019, University of Waterloo

URL: http://hdl.handle.net/10012/14574

► This thesis developed a new set of selection criteria to renew the Canadian Reference Hydrometric Basin Network (RHBN) and improve its coverage of non-atmospheric factors… (more)

Subjects/Keywords: trend detection; climate change; streamflow

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APA (6^th Edition):

Pellerin, J. (2019). Updating the Canadian Reference Hydrometric Basin Network to detect climate-related trends in streamflow. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/14574

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Pellerin, Jennifer. “Updating the Canadian Reference Hydrometric Basin Network to detect climate-related trends in streamflow.” 2019. Thesis, University of Waterloo. Accessed December 14, 2019. http://hdl.handle.net/10012/14574.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Pellerin, Jennifer. “Updating the Canadian Reference Hydrometric Basin Network to detect climate-related trends in streamflow.” 2019. Web. 14 Dec 2019.

Vancouver:

Pellerin J. Updating the Canadian Reference Hydrometric Basin Network to detect climate-related trends in streamflow. [Internet] [Thesis]. University of Waterloo; 2019. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/10012/14574.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Pellerin J. Updating the Canadian Reference Hydrometric Basin Network to detect climate-related trends in streamflow. [Thesis]. University of Waterloo; 2019. Available from: http://hdl.handle.net/10012/14574

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Waterloo

18. Dietrich, Amy. Climate Change Impacts on Snowmelt-Driven Streamflow in the Grand River Watershed: Implications for Water Resource Management.

Degree: 2019, University of Waterloo

URL: http://hdl.handle.net/10012/15156

► Climate change is one of the most significant global environmental drivers threatening the quality and quantity of future water resources. Global temperature increases will have… (more)

▼ Climate change is one of the most significant global environmental drivers threatening the quality and quantity of future water resources. Global temperature increases will have significant effects on the hydrologic regime of northern regions due to changes in snowfall and snowmelt. Considerable research has been conducted in western Canada to rigorously quantify snowmelt-driven streamflow processes, however, less focus has been directed towards understanding these processes in eastern Canada and Ontario. In the southern Ontario Grand River Watershed (GRW), snowmelt contributions to streamflow (freshet) make up a significant portion of the annual water yield, and the period of snowmelt is also of key concern for flood mitigation. This thesis aims to quantify historical and projected changes to timing and streamflow during freshet in the Nith River, an unregulated tributary of the Grand River. Climate data (temperature, rainfall, snowfall, and snow proportion) from observations and future scenarios were analyzed to quantify the contributions of climate conditions surrounding the timing and volume of the freshet. The annual timing of snowmelt-driven streamflow was quantified using centre time (CT), and streamflow volumes were quantified by various percentiles of streamflow (Qn) during four periods of the water year (October-December, January-February, March-April, and May-September). Historical trends in streamflow and climate data were examined using hydrometric data (1914-2016) of a stream gauge from the Water Survey of Canada, and climate data (1950-2016) from Environment and Climate Change Canada at two stations. Projected climate data were from an ensemble of models used in the Intergovernmental Panel on Climate Change’s Fourth Assessment Report (AR4). A total of nine distinct models ran two scenarios from AR4 for the 2050s; moderate (B1) and high (A1B). These time-slice projections were then used to force the hydrologic model GAWSER to simulate future streamflow data. The results show that CT in the Nith River has advanced by 17 days, on average, from 1914 to 2016 (P=0.036), and the advance is projected to continue as a function of future emissions scenario (approximately 12 days for scenario B1, and 17 days for A1B). Historical CT was weakly negatively correlated with temperature (-0.51, P < 0.001), where colder winters were associated with a later CT. Results from a multiple regression model using climate variables to predict CT were inconclusive. Historical streamflow at the Q10 level has increased from 1914-2016 (P < 0.001), but no significant change has been observed at the Q50, and Q90 levels. Future freshet streamflow is projected to increase for both scenarios at the Q10 level (an average of 18.1% and 23.6% respectively) as well as the Q50 level (an average of 20.8% and 26.6% respectively). No change was observed in Q90 for either future scenario. The results of this thesis will inform water resource managers of climate change impacts to average hydrologic conditions in the GRW.

Subjects/Keywords: climate; streamflow; snowmelt; freshet

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APA (6^th Edition):

Dietrich, A. (2019). Climate Change Impacts on Snowmelt-Driven Streamflow in the Grand River Watershed: Implications for Water Resource Management. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/15156

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Dietrich, Amy. “Climate Change Impacts on Snowmelt-Driven Streamflow in the Grand River Watershed: Implications for Water Resource Management.” 2019. Thesis, University of Waterloo. Accessed December 14, 2019. http://hdl.handle.net/10012/15156.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Dietrich, Amy. “Climate Change Impacts on Snowmelt-Driven Streamflow in the Grand River Watershed: Implications for Water Resource Management.” 2019. Web. 14 Dec 2019.

Vancouver:

Dietrich A. Climate Change Impacts on Snowmelt-Driven Streamflow in the Grand River Watershed: Implications for Water Resource Management. [Internet] [Thesis]. University of Waterloo; 2019. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/10012/15156.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Dietrich A. Climate Change Impacts on Snowmelt-Driven Streamflow in the Grand River Watershed: Implications for Water Resource Management. [Thesis]. University of Waterloo; 2019. Available from: http://hdl.handle.net/10012/15156

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Alberta

19. Wagner, Michael Johann. Hydrologic risk assessment framework for Alberta's green zone.

Degree: MS, Department of Renewable Resources, 2010, University of Alberta

URL: https://era.library.ualberta.ca/files/kp78gg70s

► In this dissertation, a hydrologic classification approach was tested using the shape factor of hydrographs to represent variation in streamflow regimes across Alberta. Hydrograph shape… (more)

Subjects/Keywords: Streamflow; Variability; Hydrologic regime; Classification; Annual Hydrograph

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APA (6^th Edition):

Wagner, M. J. (2010). Hydrologic risk assessment framework for Alberta's green zone. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/kp78gg70s

Chicago Manual of Style (16^th Edition):

Wagner, Michael Johann. “Hydrologic risk assessment framework for Alberta's green zone.” 2010. Masters Thesis, University of Alberta. Accessed December 14, 2019. https://era.library.ualberta.ca/files/kp78gg70s.

MLA Handbook (7^th Edition):

Wagner, Michael Johann. “Hydrologic risk assessment framework for Alberta's green zone.” 2010. Web. 14 Dec 2019.

Vancouver:

Wagner MJ. Hydrologic risk assessment framework for Alberta's green zone. [Internet] [Masters thesis]. University of Alberta; 2010. [cited 2019 Dec 14]. Available from: https://era.library.ualberta.ca/files/kp78gg70s.

Council of Science Editors:

Wagner MJ. Hydrologic risk assessment framework for Alberta's green zone. [Masters Thesis]. University of Alberta; 2010. Available from: https://era.library.ualberta.ca/files/kp78gg70s

Texas A&M University

20. Karimov, Askarali Khuramovich. Water Availability Modeling to Support Water Management in the Lower Rio Grande Valley of Texas.

Degree: 2016, Texas A&M University

URL: http://hdl.handle.net/1969.1/159016

► The Rio Grande River is considered as an over-appropriated river basin in Texas, where the number of permits to use surface waters exceed the amount… (more)

▼ The Rio Grande River is considered as an over-appropriated river basin in Texas, where the number of permits to use surface waters exceed the amount of available water. Agricultural and municipal water supply and use in the Lower Rio Grande Valley (LRGV) are essentially dependent upon storage of the International Amistad and Falcon Reservoirs, which are owned and operated by the International Boundary and Water Commission (IBCW) based on provisions of the 1944 treaty between Mexico and the United States. The Texas share of the waters of the Rio Grande is allocated among numerous farmers, irrigation districts, and cities by a unique water rights permit system administered by the Rio Grande watermaster of the Texas Commission on Environmental Quality (TCEQ). The Rio Grande Water Availability Model (WAM) obtained from the TCEQ WAM System has a hydrologic period-of-analysis of 1940-2000. However, hydrology since 2000 includes the severe 2008-2014 drought and is important to the simulation study. The hydrologic period of analysis for the Rio Grande WAM was extended from 2001 to 2015 using Water Rights Analyses Package (WRAP) programs and methodologies. Extending the hydrologic period-of-analysis of the Rio Grande WAM to cover 1940-2015 was an initial major task in the research. A WRAP/WAM simulation combines natural hydrology represented by sequences of monthly naturalized streamflows and reservoir evaporation-precipitation rates for a specified hydrologic period-of-analysis, 1940-2015 in this study, with specified scenarios of water resources development, allocation, management, and use. Water availability is assessed based on supply reliability metrics and storage and flow frequency metrics computed from simulation results. Additionally, the Rio Grande WAM original 1940-2000 hydrologic period of analysis is extended to cover 1940-2015 and long-term simulations were performed to develop water supply reliability and storage frequency metrics for major water right groups, reallocation of municipal water rights in the Amistad-Falcon Reservoir system, and water planning scenarios including drought management. The Conditional Reliability Modeling (CRM) methods were applied to assess short-term water planning and management strategies for the LRGV along with the drought management scenarios were simulated to predict the likelihood of extended drought conditions based on beginning storage in the Amistad-Falcon Reservoir system. The reliability and exceedance frequencies of maximum end-of-month storage at Amistad and Falcon reservoirs were developed using CRM. Advisors/Committee Members: Wurbs, Ralph (advisor), Smith, Patricia (advisor), Enciso, Juan (committee member), Kaiser, Ronald (committee member).

Subjects/Keywords: Water Availability Modeling; Streamflow and Reservoir Simulations

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APA (6^th Edition):

Karimov, A. K. (2016). Water Availability Modeling to Support Water Management in the Lower Rio Grande Valley of Texas. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/159016

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Karimov, Askarali Khuramovich. “Water Availability Modeling to Support Water Management in the Lower Rio Grande Valley of Texas.” 2016. Thesis, Texas A&M University. Accessed December 14, 2019. http://hdl.handle.net/1969.1/159016.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Karimov, Askarali Khuramovich. “Water Availability Modeling to Support Water Management in the Lower Rio Grande Valley of Texas.” 2016. Web. 14 Dec 2019.

Vancouver:

Karimov AK. Water Availability Modeling to Support Water Management in the Lower Rio Grande Valley of Texas. [Internet] [Thesis]. Texas A&M University; 2016. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1969.1/159016.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Karimov AK. Water Availability Modeling to Support Water Management in the Lower Rio Grande Valley of Texas. [Thesis]. Texas A&M University; 2016. Available from: http://hdl.handle.net/1969.1/159016

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Oregon State University

21. Perkins, Reed. Climatic and physiographic controls on peakflow generation in the western Cascades, Oregon.

Degree: PhD, Forest Science, 1997, Oregon State University

URL: http://hdl.handle.net/1957/13541

► Despite the importance of rain and snowmelt in causing peakflows in the Pacific Northwest, the interactive effects of a snowpack and watershed physiography on streamflow… (more)

▼ Despite the importance of rain and snowmelt in causing peakflows in the Pacific Northwest, the interactive effects of a snowpack and watershed physiography on streamflow are largely undocumented. This study investigated the influence of soil and snowpack moisture on peakflow hydrograph shape in three small (< 60 ha) control sub-watersheds and the containing Lookout Creek Watershed (6200 ha) in the western Cascade Mountains of Oregon with three main objectives: 1) determine the statistical correlation between antecedent conditions and peakflow hydrograph shape within each small watershed; 2) determine how these correlations differed between small watersheds; and 3) determine the correlation between sub-watershed and Lookout Creek peakflow hydrograph shapes. A partial-duration set of peakflows was selected from at least 21 years of continuous discharge data for each small watershed using a linear quickflow vs. baseflow separation technique. Peakflows were then classified into three significantly different types based on estimated antecedent soil and snowpack moisture storage: "dry-soil rain" (e.g., soil moisture < 90 percent field capacity), "wet-soil rain" (e.g., soil moisture> 90 percent field capacity), and "wet-soil rain-on-snow". These three types accounted for over 70 percent of peakflows and over 80 percent of quickflow volume in each watershed. Generally, wet-soil rain peakflows began sooner after precipitation, lasted longer, and had larger instantaneous peaks than did dry-soil rain peakflows, while wet-soil rain-on-snow peakflows had the longest durations and largest instantaneous peaks. However, effects of soil wetting and snowpack on peakflow hydrographs differed significantly between watersheds. Lookout Creek peakflows occurred during several combinations of small watershed peakflow types, though the largest Lookout Creek peakflows were coincident with large, synchronized wet-soil rain-on-snow peakflows in Watersheds 2 and 8. Very little attenuation of the peakflow hydrograph was observed between the small watersheds and Lookout Creek. Results from this study indicate that by altering snowpack dynamics, and therefore the frequency distribution of peakflow types, climate change or land-use may differentially affect peakflow hydrographs in small watersheds. One consequence of this in Lookout Creek Watershed may be to desynchronize small watershed peakflow responses and decrease downstream peak size. Advisors/Committee Members: Jones, Julia A. (advisor), Beschta, Bob (committee member).

Subjects/Keywords: Streamflow – Cascade Range

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APA (6^th Edition):

Perkins, R. (1997). Climatic and physiographic controls on peakflow generation in the western Cascades, Oregon. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/13541

Chicago Manual of Style (16^th Edition):

Perkins, Reed. “Climatic and physiographic controls on peakflow generation in the western Cascades, Oregon.” 1997. Doctoral Dissertation, Oregon State University. Accessed December 14, 2019. http://hdl.handle.net/1957/13541.

MLA Handbook (7^th Edition):

Perkins, Reed. “Climatic and physiographic controls on peakflow generation in the western Cascades, Oregon.” 1997. Web. 14 Dec 2019.

Vancouver:

Perkins R. Climatic and physiographic controls on peakflow generation in the western Cascades, Oregon. [Internet] [Doctoral dissertation]. Oregon State University; 1997. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1957/13541.

Council of Science Editors:

Perkins R. Climatic and physiographic controls on peakflow generation in the western Cascades, Oregon. [Doctoral Dissertation]. Oregon State University; 1997. Available from: http://hdl.handle.net/1957/13541

Oregon State University

22. Faustini, John M. Stream channel response to peak flows in a fifth-order mountain watershed.

Degree: PhD, Geology, 2000, Oregon State University

URL: http://hdl.handle.net/1957/9689

► This investigation explored how the magnitude, style, and frequency of channel adjustments vary spatially and over time within a 5th-order mountain watershed. Historical data sets,… (more)

▼ This investigation explored how the magnitude, style, and frequency of channel adjustments vary spatially and over time within a 5th-order mountain watershed. Historical data sets, including repeated cross section surveys spanning up to 20 years at five sites on 2nd to 5th-order channels and streamflow records spanning up to 50 years, were supplemented by mapping and field reconnaissance activities. The study had two major parts. The first focused on two adjacent, contrasting stream reaches to examine the influence of large woody debris (LWD) on channel morphology and channel response to peak flows in a 3rd-order stream. The upper reach flows through old-growth forest with abundant LWD, while the lower reach was clearcut in 1964-65 and contains little LWD. A 25-year flood in 1996 caused deposition upstream of LWD steps in the old-growth reach alternating with scour between steps, resulting in no net gain or loss of sediment within the reach, while extensive scour and coarsening of the bed occurred in the clearcut reach. These observations suggest that reach-scale channel response was strongly influenced by LWD abundance, but that response at finer scales depends critically on the details of the location and arrangement of LWD. The second part of the study examined the dynamics of channel response to peak flows over two decades, and to two particular large floods during that period, in different portions of the channel network. The cross section data show that the streambed at the study sites is very stable, particularly in lower-order channels. Peak flows that produced detectable change at 90% of cross sections-flows able to cause significant channel adjustments-recur approximately three times as frequently (every 6-7 years) in 4`" to 5`h-order Lookout Creek as in 3rd-order Mack Creek (20-25 years). Flows that produced detectable change at 25% of cross sections are estimated to occur on average every 1.7 to 3.0 years at the study sites. It is estimated that if peak flows of all sizes were increased by only 10% due to anthropogenic impacts (e.g., logging) or climate change, the frequency of peak flows of a magnitude observed to produce significant channel adjustments would increase by approximately 30% in Lookout Creek and 60% in Mack Creek. Advisors/Committee Members: Jones, Julia Allen (advisor), Gregory, Stan (committee member).

Subjects/Keywords: Streamflow – Longitudinal studies

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APA (6^th Edition):

Faustini, J. M. (2000). Stream channel response to peak flows in a fifth-order mountain watershed. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/9689

Chicago Manual of Style (16^th Edition):

Faustini, John M. “Stream channel response to peak flows in a fifth-order mountain watershed.” 2000. Doctoral Dissertation, Oregon State University. Accessed December 14, 2019. http://hdl.handle.net/1957/9689.

MLA Handbook (7^th Edition):

Faustini, John M. “Stream channel response to peak flows in a fifth-order mountain watershed.” 2000. Web. 14 Dec 2019.

Vancouver:

Faustini JM. Stream channel response to peak flows in a fifth-order mountain watershed. [Internet] [Doctoral dissertation]. Oregon State University; 2000. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1957/9689.

Council of Science Editors:

Faustini JM. Stream channel response to peak flows in a fifth-order mountain watershed. [Doctoral Dissertation]. Oregon State University; 2000. Available from: http://hdl.handle.net/1957/9689

Oregon State University

23. Zeb, Aurang. Long-term effects of changes in vegetation condition, precipitation and watershed parameters on summer low-flows in the semi-arid Pacific Northwest.

Degree: PhD, Forest Engineering, 1994, Oregon State University

URL: http://hdl.handle.net/1957/9830

► Summer low-flow behavior in the semi-arid areas of the Pacific Northwest was studied. Long-term data from thirty-eight streams/rivers and thirty-six precipitation stations was exploited. The… (more)

▼ Summer low-flow behavior in the semi-arid areas of the Pacific Northwest was studied. Long-term data from thirty-eight streams/rivers and thirty-six precipitation stations was exploited. The study area was divided into five zones based on annual average precipitation. Trends and patterns in summer low-flows and precipitation were identified. Different zones showed different trends and patterns in precipitation over the period of record but significant similarities within each zone. Most of the summer low-flow and precipitation records showed that the 1930's and the late 1980's to early 1990's experienced major droughts. A possible return interval of 50-60 years appeared reasonable for similar major droughts in the study area. Spring, summer and fall precipitation, on average, were found insignificantly related to the summer low-flows, except for northern Idaho and southeastern Oregon where summer precipitation was significant in explaining the summer low-flow trends. Winter and annual precipitation were found significantly related to summer low-flows. But the zonal equations constructed to predict summer low-flows using precipitation alone were considered unsuitable for practical use. Zonal and regional recession models to forecast summer stream flows with significant accuracies were constructed successfully. Extreme summer low-flows were not significantly related to different watershed cover types in eastern Oregon. However, percentage of rangelands appeared to be more related to the extreme summer low-flow than other cover types. An extreme summer low-flow prediction model was constructed using several watershed and precipitation variables. Many of these variables were found to be significantly related to extreme summer low-flow. Watershed average width and annual minimum precipitation explained 71% of the variations in the extreme summer low-flow. The model finally selected, with the inclusion of watershed end point elevation, was able to explain 79% of the variability in the extreme summer low-flow. Stream and precipitation gauges need to be carefully maintained during dry periods. Also, generalization of climatic trends based on a few observations in a large region can be misleading. Advisors/Committee Members: Froehlich, Henry A. (advisor), Beschta, Robert L. (committee member).

Subjects/Keywords: Streamflow – Great Basin

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APA (6^th Edition):

Zeb, A. (1994). Long-term effects of changes in vegetation condition, precipitation and watershed parameters on summer low-flows in the semi-arid Pacific Northwest. (Doctoral Dissertation). Oregon State University. Retrieved from http://hdl.handle.net/1957/9830

Chicago Manual of Style (16^th Edition):

Zeb, Aurang. “Long-term effects of changes in vegetation condition, precipitation and watershed parameters on summer low-flows in the semi-arid Pacific Northwest.” 1994. Doctoral Dissertation, Oregon State University. Accessed December 14, 2019. http://hdl.handle.net/1957/9830.

MLA Handbook (7^th Edition):

Zeb, Aurang. “Long-term effects of changes in vegetation condition, precipitation and watershed parameters on summer low-flows in the semi-arid Pacific Northwest.” 1994. Web. 14 Dec 2019.

Vancouver:

Zeb A. Long-term effects of changes in vegetation condition, precipitation and watershed parameters on summer low-flows in the semi-arid Pacific Northwest. [Internet] [Doctoral dissertation]. Oregon State University; 1994. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/1957/9830.

Council of Science Editors:

Zeb A. Long-term effects of changes in vegetation condition, precipitation and watershed parameters on summer low-flows in the semi-arid Pacific Northwest. [Doctoral Dissertation]. Oregon State University; 1994. Available from: http://hdl.handle.net/1957/9830

University of Hong Kong

24. Mahanama, Sarith Prasad Panditha. Distributed approach of coupling basin scale hydrology with atmospheric processes.

Degree: PhD, 2000, University of Hong Kong

URL: Mahanama, S. P. P.. (2000). Distributed approach of coupling basin scale hydrology with atmospheric processes. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b3124071 ; http://dx.doi.org/10.5353/th_b3124071 ; http://hdl.handle.net/10722/35304

published_or_final_version

Civil Engineering

Doctoral

Doctor of Philosophy

Subjects/Keywords: Streamflow - Mathematical models.

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APA (6^th Edition):

Mahanama, S. P. P. (2000). Distributed approach of coupling basin scale hydrology with atmospheric processes. (Doctoral Dissertation). University of Hong Kong. Retrieved from Mahanama, S. P. P.. (2000). Distributed approach of coupling basin scale hydrology with atmospheric processes. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b3124071 ; http://dx.doi.org/10.5353/th_b3124071 ; http://hdl.handle.net/10722/35304

Chicago Manual of Style (16^th Edition):

Mahanama, Sarith Prasad Panditha. “Distributed approach of coupling basin scale hydrology with atmospheric processes.” 2000. Doctoral Dissertation, University of Hong Kong. Accessed December 14, 2019. Mahanama, S. P. P.. (2000). Distributed approach of coupling basin scale hydrology with atmospheric processes. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b3124071 ; http://dx.doi.org/10.5353/th_b3124071 ; http://hdl.handle.net/10722/35304.

MLA Handbook (7^th Edition):

Mahanama, Sarith Prasad Panditha. “Distributed approach of coupling basin scale hydrology with atmospheric processes.” 2000. Web. 14 Dec 2019.

Vancouver:

Mahanama SPP. Distributed approach of coupling basin scale hydrology with atmospheric processes. [Internet] [Doctoral dissertation]. University of Hong Kong; 2000. [cited 2019 Dec 14]. Available from: Mahanama, S. P. P.. (2000). Distributed approach of coupling basin scale hydrology with atmospheric processes. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b3124071 ; http://dx.doi.org/10.5353/th_b3124071 ; http://hdl.handle.net/10722/35304.

Council of Science Editors:

Mahanama SPP. Distributed approach of coupling basin scale hydrology with atmospheric processes. [Doctoral Dissertation]. University of Hong Kong; 2000. Available from: Mahanama, S. P. P.. (2000). Distributed approach of coupling basin scale hydrology with atmospheric processes. (Thesis). University of Hong Kong, Pokfulam, Hong Kong SAR. Retrieved from http://dx.doi.org/10.5353/th_b3124071 ; http://dx.doi.org/10.5353/th_b3124071 ; http://hdl.handle.net/10722/35304

Penn State University

25. Singh, Riddhi. A nonstationary uncertainty framework for climate change.

Degree: MS, Civil Engineering, 2010, Penn State University

URL: https://etda.libraries.psu.edu/catalog/11477

► Watershed models are used to simulate the streamflow for a given climatic scenarios and also for ungauged basins. They have become increasingly important to predict… (more)

▼ Watershed models are used to simulate the streamflow for a given climatic scenarios and also for ungauged basins. They have become increasingly important to predict the behavior of watersheds under the expected climate change where the watersheds will experience climates which will be much different from their historical climate. Most of the waterheds models require a simulation based approach to arrive at optimal parameter sets. One of the major problems is dependence of watershed models on calibration, whose outcome is dependent on the climatic regime of the calibration data, or on a priori parameter estimates, which often perform poorly even in reproducing historical data. In addition there is an urgent need to for the estimation of uncertainty in climate change impact assessment. Streamflow elasticity is defined as the percent change in streamflow for a percent change in precipitation or temperature. It is an indicator of the sensitivity of streamflow to climate change. Elasticity can be derived from historical observations or from watershed model simulations. In this study we develop a new uncertainty framework utilizing trading-space-fortime to establish model constraints that reduce predictive uncertainty while accounting for the impact of climate nonstationarity on parameter estimates. The driving hypothesis is that observed spatial gradients in watershed signatures such as runoff ratio, baseflow index etc can be used as a proxy for temporal gradients. Thus, relationships developed over vast spatial extent spanning a variety of watersheds and climate, can be used to predict the nature of a watershed as it moves to climates that it never experienced before. The main conclusion of the study is that as we move towards more extreme climates, the importance of including nonstationarity in parameters increases. Moreover, drier climates are more sensitive to climate change than wetter climates for most of the watersheds considered in the study. The latter scenario is likely to be the case for many less developed countries, which typically already lie in regions where water availability is lower and climate variability is higher. The results shown here suggest that previously used frameworks will likely underestimate the hydrologically-controled risks posed by climate change!

Subjects/Keywords: climate change; streamflow elasticity; uncertainty; hydrologic model

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APA (6^th Edition):

Singh, R. (2010). A nonstationary uncertainty framework for climate change. (Masters Thesis). Penn State University. Retrieved from https://etda.libraries.psu.edu/catalog/11477

Chicago Manual of Style (16^th Edition):

Singh, Riddhi. “A nonstationary uncertainty framework for climate change.” 2010. Masters Thesis, Penn State University. Accessed December 14, 2019. https://etda.libraries.psu.edu/catalog/11477.

MLA Handbook (7^th Edition):

Singh, Riddhi. “A nonstationary uncertainty framework for climate change.” 2010. Web. 14 Dec 2019.

Vancouver:

Singh R. A nonstationary uncertainty framework for climate change. [Internet] [Masters thesis]. Penn State University; 2010. [cited 2019 Dec 14]. Available from: https://etda.libraries.psu.edu/catalog/11477.

Council of Science Editors:

Singh R. A nonstationary uncertainty framework for climate change. [Masters Thesis]. Penn State University; 2010. Available from: https://etda.libraries.psu.edu/catalog/11477

Montana State University

26. Rasmussen, James Lee. Controls on large woody debris distributions in Yellowstone streams.

Degree: College of Letters & Science, 2002, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/8254

Subjects/Keywords: Stream ecology.; Streamflow.

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APA (6^th Edition):

Rasmussen, J. L. (2002). Controls on large woody debris distributions in Yellowstone streams. (Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/8254

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rasmussen, James Lee. “Controls on large woody debris distributions in Yellowstone streams.” 2002. Thesis, Montana State University. Accessed December 14, 2019. https://scholarworks.montana.edu/xmlui/handle/1/8254.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rasmussen, James Lee. “Controls on large woody debris distributions in Yellowstone streams.” 2002. Web. 14 Dec 2019.

Vancouver:

Rasmussen JL. Controls on large woody debris distributions in Yellowstone streams. [Internet] [Thesis]. Montana State University; 2002. [cited 2019 Dec 14]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/8254.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rasmussen JL. Controls on large woody debris distributions in Yellowstone streams. [Thesis]. Montana State University; 2002. Available from: https://scholarworks.montana.edu/xmlui/handle/1/8254

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Alaska – Fairbanks

27. Winfree, Michael. The influence of geomorphic and landscape characteristics on stream temperature and streamwater sensitivity to air temperature in the coastal temperate rainforest of Southeast Alaska .

Degree: 2017, University of Alaska – Fairbanks

URL: http://hdl.handle.net/11122/7652

► Climate warming is projected to increase the regional air temperature in southeast Alaska and alter precipitation patterns and storage, with potentially important implications for the… (more)

▼ Climate warming is projected to increase the regional air temperature in southeast Alaska and alter precipitation patterns and storage, with potentially important implications for the region's aquatic resources. Streamwater temperature is controlled by energy inputs from the atmosphere and surrounding environment that are modified by a watershed's geomorphic and landcover characteristics. The climate-landcover relationships that influence stream temperature have not been comprehensively evaluated in southeast Alaskan watersheds. Thus, improving our understanding of current streamwater thermal regimes is critical to better assess how these regimes may be altered by climate change on a regional scale. In this study, seasonal streamwater thermal regimes in forty-seven watersheds across southeast Alaska were evaluated, and the influence of watershed geomorphic and landscape characteristics on stream temperature and streamwater sensitivity to air temperature was assessed. Stream temperatures were measured during the 2015 water year and analyzed for winter and summer seasons. Mean summer stream temperature ranged from 4.0°C to 17.2°C, while mean winter stream temperature were less variable across the region, ranging from 0.5°C to 3.5°C. Maximum weekly average temperatures (MWAT) ranged from 4.3°C to 21.5°C. Regression and time series analyses revealed that lower latitude, low gradient watersheds with higher lake coverage experienced warmer maximum and average summer stream temperatures and were more sensitive to air temperature fluctuations compared to higher latitude watersheds with high gradients during the summer. Winter mean stream temperature was warmer in higher gradient watersheds with greater forest and lake coverage. Moreover, higher latitude watersheds with steep gradients were less sensitive to changes in air temperature relative to low gradient / low latitude watersheds during the winter. Findings from this study demonstrate thermal regimes and air sensitivity are moderated by watershed geomorphology and landcover to create streamwater thermal heterogeneity across the coastal temperate rainforest of southeast Alaska. Results presented herein demonstrate that streamwater sensitivity to air temperature fluctuations are moderated by watershed geomorphology, and should be considered as a framework for predicting thermal regimes to assess relative watershed thermal response to climate change. This information, in turn, is important for quantifying the likely magnitude and spatial extent of climate-driven thermal impacts on Pacific salmon during their freshwater life history stages in southeast Alaska. Advisors/Committee Members: Arp, Christopher (committee).

Subjects/Keywords: Stream ecology; Alaska, Southeast; Streamflow; Water temperature

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APA (6^th Edition):

Winfree, M. (2017). The influence of geomorphic and landscape characteristics on stream temperature and streamwater sensitivity to air temperature in the coastal temperate rainforest of Southeast Alaska . (Thesis). University of Alaska – Fairbanks. Retrieved from http://hdl.handle.net/11122/7652

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Winfree, Michael. “The influence of geomorphic and landscape characteristics on stream temperature and streamwater sensitivity to air temperature in the coastal temperate rainforest of Southeast Alaska .” 2017. Thesis, University of Alaska – Fairbanks. Accessed December 14, 2019. http://hdl.handle.net/11122/7652.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Winfree, Michael. “The influence of geomorphic and landscape characteristics on stream temperature and streamwater sensitivity to air temperature in the coastal temperate rainforest of Southeast Alaska .” 2017. Web. 14 Dec 2019.

Vancouver:

Winfree M. The influence of geomorphic and landscape characteristics on stream temperature and streamwater sensitivity to air temperature in the coastal temperate rainforest of Southeast Alaska . [Internet] [Thesis]. University of Alaska – Fairbanks; 2017. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/11122/7652.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Winfree M. The influence of geomorphic and landscape characteristics on stream temperature and streamwater sensitivity to air temperature in the coastal temperate rainforest of Southeast Alaska . [Thesis]. University of Alaska – Fairbanks; 2017. Available from: http://hdl.handle.net/11122/7652

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of KwaZulu-Natal

28. Shabalala, Mlungisi Maxwell. Modelling the impacts of changes in agricultural management practices on water resources with declining hydrometeorological data in the Uthukela Catchment.

Degree: 2018, University of KwaZulu-Natal

URL: http://hdl.handle.net/10413/16017

► In order to meet the country’s growing demand for food, and to transform the economy of rural communities, the South African Government aims to develop… (more)

▼ In order to meet the country’s growing demand for food, and to transform the economy of rural communities, the South African Government aims to develop the agricultural sector in the uThukela Catchment, KwaZulu-Natal Province. Intensification of agriculture will depend on the availability of water resources, with subsequent impacts on the quality and quantity of water resources. Therefore, the aim of this study was to investigate the impacts of proposed agricultural developments on the water flows in the upper uThukela Catchment using the multi-purpose, multi-soil-layered, daily time step ACRU model. The first phase of the study was to confirm the model’s ability to simulate flows in three, relatively small, gauged subcatchments of the uThukela catchment (Quaternary Catchments V11K, V14C and V31F), using current land cover and climate information extending to present day. However, the documented decline in the number of, and quality of data from, hydrometeorological stations, particularly since the year 2000, was concerning. Therefore, the impact of this decline on model performance was investigated in the selected subcatchments by comparing simulated flows to available observed flows in a confirmation study. Configuration of the model to present day conditions was restricted by the unavailability of rainfall stations. In cases where stations were available, there were no nearby stations to patch or compare to, when the record had missing or suspicious values. Given this, the model was set to run from 1960 to the latest record date available for catchments V14C and V31F. For V14C, the model performance decreased when the model was run from 1960 to 2012, compared to 1960-1999. Although a slightly better performance was obtained at V31F, the simulation time period was reduced to 1960-1999 for both catchments due to uncertainties with post 2000 rainfall and streamflow data. However, V14C continued to prove problematic and further investigation using of the Indicators of Hydrological Alteration software revealed a marked change in the flow characteristics between 1980 and 1981. No documentation of developments or substantial changes in the catchment could be sourced. Therefore, Quaternary Catchment (QC) V14C was excluded from further analysis. The ACRU model adequately simulated the flows for V11K and V31F, with the simulated flows being more representative of the observed flows in V31F. With the ability of the ACRU model to simulate the flows in the upper uThukela catchment under various land uses confirmed, the model could be used to investigate the impacts of agricultural land management scenarios on water flows. The agricultural land management scenarios were developed from the national and local government’s plan to expand agriculture to transform the socioeconomic status of the uThukela catchment. To develop scenarios for larger scale modelling, numerous scenarios were tested at QCs V31F and V11K. However, V11K was not responsive to changes in land use; therefore, results from the catchment were not used. For… Advisors/Committee Members: Toucher, Michele Lynn Warburton. (advisor).

Subjects/Keywords: Hydrometeorological data.; Hydrological modelling.; Streamflow.; Simulation.; Irrigation.

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APA (6^th Edition):

Shabalala, M. M. (2018). Modelling the impacts of changes in agricultural management practices on water resources with declining hydrometeorological data in the Uthukela Catchment. (Thesis). University of KwaZulu-Natal. Retrieved from http://hdl.handle.net/10413/16017

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Shabalala, Mlungisi Maxwell. “Modelling the impacts of changes in agricultural management practices on water resources with declining hydrometeorological data in the Uthukela Catchment.” 2018. Thesis, University of KwaZulu-Natal. Accessed December 14, 2019. http://hdl.handle.net/10413/16017.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Shabalala, Mlungisi Maxwell. “Modelling the impacts of changes in agricultural management practices on water resources with declining hydrometeorological data in the Uthukela Catchment.” 2018. Web. 14 Dec 2019.

Vancouver:

Shabalala MM. Modelling the impacts of changes in agricultural management practices on water resources with declining hydrometeorological data in the Uthukela Catchment. [Internet] [Thesis]. University of KwaZulu-Natal; 2018. [cited 2019 Dec 14]. Available from: http://hdl.handle.net/10413/16017.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Shabalala MM. Modelling the impacts of changes in agricultural management practices on water resources with declining hydrometeorological data in the Uthukela Catchment. [Thesis]. University of KwaZulu-Natal; 2018. Available from: http://hdl.handle.net/10413/16017

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Columbia University

29. Pascolini-Campbell, Madeleine Anne. Variability of Hydroclimate in the North American Southwest: Implications for Streamflow, the Spring Dry Season and Ecosystems.

Degree: 2018, Columbia University

URL: https://doi.org/10.7916/D8DR4C5N

► The Southwest United States (SWUS) is facing an ongoing drought which has led to water short- ages, in addition to forest mortality due to wildfire… (more)

▼ The Southwest United States (SWUS) is facing an ongoing drought which has led to water short- ages, in addition to forest mortality due to wildfire and bark beetle outbreaks associated with increased temperatures. This region has a population of 9.6 million people and is one of the fastest growing parts of the United States, and pressure on its resources can be expected to increase in the future. The SWUS is also projected to become more arid in the coming century under greenhouse gas induced climate change, which will impact its environmental, economic and social vitality. This thesis explores the climate dynamics which control water availability, streamflow, and vegetation green-up in the SWUS, in order to constrain our understanding of the mechanisms controlling the ecohydrology of the region, and to inform projections for the 21st century. Chapters 1 and 2 investigate the climate drivers responsible for producing the observed vari- ability in streamflow for the Gila River, a tributary of the Colorado, and the upper Rio Grande. The Gila is the southernmost snowfed river in the SWUS, and has a spring streamflow peak that responds to melting of the snowpack at its headwaters in New Mexico. The Gila is also sufficiently south so that it has a secondary streamflow peak in the summer which is fed by rains from the North American Monsoon (NAM). On interannual timescales, the Gila’s spring peak is primarily influenced by natural variability associated with Pacific sea surface temperature (SST), while the summer peak apparently does not respond to interannual variability. The upper Rio Grande is fur- ther north and east in the SWUS, and only has one streamflow peak occurring in spring-summer which is influenced by both tropical Pacific SST and Atlantic SST. Spring streamflow has also declined in each river post-1998, and this is due to a shift in the tropical Pacific leading to negative precipitation anomalies and drying in the SWUS. Chapter 2 assess a region of the SWUS that receives both winter storm track precipitation and NAM, and therefore has two periods of vegetation green-up annually with an intervening spring dry season. The first peak in vegetation occurs during the spring, and is influenced by the magnitude of winter precipitation and snowmelt, which gradually adds water to the soils. The second peak in vegetation follows the spring dry season when soil moisture recovers with the arrival of the NAM. A climatic shift in the tropical Pacific occurred in 1997/98 and produced a shift to an earlier and more severe spring dry season, and reduced vegetation green-up. An earlier extended dry period in the mid-century (1948 to 1966) also was influenced by a cool phase of the tropical Pacific, which led to a reduction in precipitation of a similar magnitude as the recent drought. However, the recent drought is more severe - and temperatures also have been greater during the recent period. Using a decomposition of the impact of precipitation and potential evapotranspiration (PET) on soil moisture,…

Subjects/Keywords: Atmosphere; Streamflow; Droughts; Climatology; Ecohydrology; Environmental sciences

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Pascolini-Campbell, M. A. (2018). Variability of Hydroclimate in the North American Southwest: Implications for Streamflow, the Spring Dry Season and Ecosystems. (Doctoral Dissertation). Columbia University. Retrieved from https://doi.org/10.7916/D8DR4C5N

Chicago Manual of Style (16^th Edition):

Pascolini-Campbell, Madeleine Anne. “Variability of Hydroclimate in the North American Southwest: Implications for Streamflow, the Spring Dry Season and Ecosystems.” 2018. Doctoral Dissertation, Columbia University. Accessed December 14, 2019. https://doi.org/10.7916/D8DR4C5N.

MLA Handbook (7^th Edition):

Pascolini-Campbell, Madeleine Anne. “Variability of Hydroclimate in the North American Southwest: Implications for Streamflow, the Spring Dry Season and Ecosystems.” 2018. Web. 14 Dec 2019.

Vancouver:

Pascolini-Campbell MA. Variability of Hydroclimate in the North American Southwest: Implications for Streamflow, the Spring Dry Season and Ecosystems. [Internet] [Doctoral dissertation]. Columbia University; 2018. [cited 2019 Dec 14]. Available from: https://doi.org/10.7916/D8DR4C5N.

Council of Science Editors:

Pascolini-Campbell MA. Variability of Hydroclimate in the North American Southwest: Implications for Streamflow, the Spring Dry Season and Ecosystems. [Doctoral Dissertation]. Columbia University; 2018. Available from: https://doi.org/10.7916/D8DR4C5N

University of New South Wales

30. Naseem, Bushra. Ecohydrological modeling for streamflow prediction.

Degree: Civil & Environmental Engineering, 2017, University of New South Wales

URL: http://handle.unsw.edu.au/1959.4/57359 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:43323/SOURCE02?view=true

► Ecohydrology describes the hydrological processes that are caused by ecological patterns and processes. In the present research, ecology represented by dynamic vegetation processes is taken… (more)

▼ Ecohydrology describes the hydrological processes that are caused by ecological patterns and processes. In the present research, ecology represented by dynamic vegetation processes is taken into account in a number of different aspects and also identification of satellite derived vegetation products for improved streamflow prediction is considered. A merging of a lumped conceptual hydrological model with two dynamic vegetation models is performed to improve the ability to simultaneously predict catchment scale streamflow and vegetation dynamics (represented by the Leaf Area Index, LAI). Validation results from the modeling exercise show that the merged ecohydrological models were capable of improving streamflow prediction compared to hydrological models alone, while also providing as good estimates of LAI as dynamic vegetation models alone. It was found that the single-objective has limited capacity to represent the multi-response dynamics. However, the multi-objective optimization provides a balanced solution for multivariate responses and gives better representation of streamflow and LAI dynamics. We also assessed the implications of using three alternate remote sensing vegetation products: Gross Primary Productivity (GPP), Leaf Area Index (LAI) or Vegetation Optical Depth (VOD) for streamflow prediction in a conceptual ecohydrological modeling. Single-objective calibration based on one of the vegetation products (GPP, LAI and VOD) shows that GPP is the best simulating vegetation product by the model. On the contrary, LAI produces the best streamflow during validation and using multi-objective optimization for streamflow and LAI. It was found that LAI is the best vegetation product to be the part of conceptual hydrological model for improved streamflow prediction. In addition, the possible significance of incorporating remotely sensed vegetation data into a conceptual hydrological and dynamic vegetation models is explored. It was demonstrated that the ecohydrological model incorporating a range of remotely sensed vegetation indicators was consistently able to provide better prediction of streamflow but also to provide predictions of ET and vegetation state.We also explored the geomorphological perspective of few catchments and evaluated that vegetation with the soil type is highly significant for identification of the diffusive and fluvial zones. Overall, findings of this research provide better understanding of ecohydrological modeling for streamflow prediction. Advisors/Committee Members: Sharma, Ashish, Civil & Environmental Engineering, Faculty of Engineering, UNSW.

Subjects/Keywords: Leaf area index; Ecohydrology; streamflow prediction

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Naseem, B. (2017). Ecohydrological modeling for streamflow prediction. (Doctoral Dissertation). University of New South Wales. Retrieved from http://handle.unsw.edu.au/1959.4/57359 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:43323/SOURCE02?view=true

Chicago Manual of Style (16^th Edition):

Naseem, Bushra. “Ecohydrological modeling for streamflow prediction.” 2017. Doctoral Dissertation, University of New South Wales. Accessed December 14, 2019. http://handle.unsw.edu.au/1959.4/57359 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:43323/SOURCE02?view=true.

MLA Handbook (7^th Edition):

Naseem, Bushra. “Ecohydrological modeling for streamflow prediction.” 2017. Web. 14 Dec 2019.

Vancouver:

Naseem B. Ecohydrological modeling for streamflow prediction. [Internet] [Doctoral dissertation]. University of New South Wales; 2017. [cited 2019 Dec 14]. Available from: http://handle.unsw.edu.au/1959.4/57359 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:43323/SOURCE02?view=true.

Council of Science Editors:

Naseem B. Ecohydrological modeling for streamflow prediction. [Doctoral Dissertation]. University of New South Wales; 2017. Available from: http://handle.unsw.edu.au/1959.4/57359 ; https://unsworks.unsw.edu.au/fapi/datastream/unsworks:43323/SOURCE02?view=true

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