subject:(Groundwater)

Oregon State University

1. McCarthy, Alexander J. The Effects of Layered Differences in Hydraulic Conductivity of Groundwater : An Estimation of Residence Time for Solute Transport.

Degree: MS, Water Resources Science, 2016, Oregon State University

URL: http://hdl.handle.net/1957/59890

► In order to determine how contaminants from pharmaceutical, agriculture, and industry will move through groundwater systems, it is imperative to further our understanding of the… (more)

Subjects/Keywords: Groundwater; Groundwater – Pollution

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APA (6^th Edition):

McCarthy, A. J. (2016). The Effects of Layered Differences in Hydraulic Conductivity of Groundwater : An Estimation of Residence Time for Solute Transport. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/59890

Chicago Manual of Style (16^th Edition):

McCarthy, Alexander J. “The Effects of Layered Differences in Hydraulic Conductivity of Groundwater : An Estimation of Residence Time for Solute Transport.” 2016. Masters Thesis, Oregon State University. Accessed March 01, 2021. http://hdl.handle.net/1957/59890.

MLA Handbook (7^th Edition):

McCarthy, Alexander J. “The Effects of Layered Differences in Hydraulic Conductivity of Groundwater : An Estimation of Residence Time for Solute Transport.” 2016. Web. 01 Mar 2021.

Vancouver:

McCarthy AJ. The Effects of Layered Differences in Hydraulic Conductivity of Groundwater : An Estimation of Residence Time for Solute Transport. [Internet] [Masters thesis]. Oregon State University; 2016. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1957/59890.

Council of Science Editors:

McCarthy AJ. The Effects of Layered Differences in Hydraulic Conductivity of Groundwater : An Estimation of Residence Time for Solute Transport. [Masters Thesis]. Oregon State University; 2016. Available from: http://hdl.handle.net/1957/59890

University of North Texas

2. Teel, Katherine. The Brazos Valley Groundwater Conservation District: A Case Study in Texas Groundwater Conservation.

Degree: 2011, University of North Texas

URL: https://digital.library.unt.edu/ark:/67531/metadc84287/

► This thesis examines the history of groundwater management through the development of groundwater conservation districts in Texas. Political, economic, ideological, and scientific understandings of groundwater… (more)

Subjects/Keywords: Groundwater conservation district; groundwater management; Texas groundwater

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APA (6^th Edition):

Teel, K. (2011). The Brazos Valley Groundwater Conservation District: A Case Study in Texas Groundwater Conservation. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc84287/

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):

Teel, Katherine. “The Brazos Valley Groundwater Conservation District: A Case Study in Texas Groundwater Conservation.” 2011. Thesis, University of North Texas. Accessed March 01, 2021. https://digital.library.unt.edu/ark:/67531/metadc84287/.

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

MLA Handbook (7^th Edition):

Teel, Katherine. “The Brazos Valley Groundwater Conservation District: A Case Study in Texas Groundwater Conservation.” 2011. Web. 01 Mar 2021.

Vancouver:

Teel K. The Brazos Valley Groundwater Conservation District: A Case Study in Texas Groundwater Conservation. [Internet] [Thesis]. University of North Texas; 2011. [cited 2021 Mar 01]. Available from: https://digital.library.unt.edu/ark:/67531/metadc84287/.

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

Council of Science Editors:

Teel K. The Brazos Valley Groundwater Conservation District: A Case Study in Texas Groundwater Conservation. [Thesis]. University of North Texas; 2011. Available from: https://digital.library.unt.edu/ark:/67531/metadc84287/

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

University of Zambia

3. Mbewe, Solomon. Characterisation and temporal variability assessment of groundwater quality in Petauke Town, Eastern Province .

Degree: 2013, University of Zambia

URL: http://hdl.handle.net/123456789/3030

► The study was aimed at contributing to the provision of good quality groundwater supply in Petauke District. It comprised collection and analysis of 50 groundwater… (more)

▼ The study was aimed at contributing to the provision of good quality groundwater supply in Petauke District. It comprised collection and analysis of 50 groundwater samples from boreholes in the dry and wet season in Petauke Town. Water exit points were sterilised before collection of samples. Physical properties were assessed on-site using potable pH and conductivity meters, whereas samples for chemical and microbiological analysis were collected in sterilised bottles and transported to the Environmental Engineering Laboratory at the University of Zambia for analysis. In the laboratory, the numbers of total and faecal coliforms were determined using the membrane filtration technique whereas for chemical analysis, samples were analysed for major ion chemistry using the standard methods after APHA (1998). The quality of analytical data was evaluated by computing the ionic balances for all the samples.Furthermore, data for the major ions (Ca2+, Mg2+, Na+, K+, SO42-, Cl-, CaCO3 2-,HCO3 2-) were plotted on the Piper diagram so as to understand the evolution of hydro-chemical parameters of groundwater in the town. Groundwater classification was done after WHO (2006) whereas temporal variability of water quality between the dry and wet season was assessed using the ANOVA. The suitability of water for drinking was assessed by comparing the data obtained in the field and laboratory analysis to the WHO (2008) and ZABS (2008) limits. Parameters with values above the limits were identified as groundwater contaminants in the town.The study revealed that groundwater in the town was characterised by low pH (6.17),high iron (2.63 mg/l) and high bicarbonate content (609.6 mg/l), high total hardness (as 598 mgCaCO3/l) and the abundance of major ions were in the order of Ca > Mg >Na> K = HCO3 > Cl >SO4. Hydrochemical facies identified were Ca-HCO3 and Ca (Mg) HCO3 type. Fifty eight percent of groundwater was hard, 26% was moderately hard, 14% was very hard and only 2% was soft. Observed values of most of the parameters fell within the ZABS and WHO guidelines for drinking water except for nitrate (10%), total colifoms (72%), faecal coliforms (56%), pH (28%), iron (24%) and total hardness (58%). The ANOVA showed that there was no significant seasonal variation in groundwater quality. Groundwater contaminants in the town were found to be total and faecal coliforms, nitrate, pH, iron and total hardness. Groundwater in Petauke Town belongs to the CaHCO3 and Ca (Mg) HCO3 group and is hard. Most of the boreholes (75%) were microbiologically contaminated. There was no seasonal variability in groundwater quality and most of the parameters fell within the WHO/ZABS guidelines for drinking water except total and faecal coliforms, total hardness, turbidity, nitrates, nitrites pH and iron which were identified as contaminants. The over-abundance of carbonates, iron and calcium are naturally caused whereas microbiological pollution and excess nitrates are caused by anthropogenic activities. To prevent the effects of…

Subjects/Keywords: Aquifers-Zambia; Groundwater Management; Groundwater

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APA (6^th Edition):

Mbewe, S. (2013). Characterisation and temporal variability assessment of groundwater quality in Petauke Town, Eastern Province . (Thesis). University of Zambia. Retrieved from http://hdl.handle.net/123456789/3030

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):

Mbewe, Solomon. “Characterisation and temporal variability assessment of groundwater quality in Petauke Town, Eastern Province .” 2013. Thesis, University of Zambia. Accessed March 01, 2021. http://hdl.handle.net/123456789/3030.

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

MLA Handbook (7^th Edition):

Mbewe, Solomon. “Characterisation and temporal variability assessment of groundwater quality in Petauke Town, Eastern Province .” 2013. Web. 01 Mar 2021.

Vancouver:

Mbewe S. Characterisation and temporal variability assessment of groundwater quality in Petauke Town, Eastern Province . [Internet] [Thesis]. University of Zambia; 2013. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/123456789/3030.

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

Council of Science Editors:

Mbewe S. Characterisation and temporal variability assessment of groundwater quality in Petauke Town, Eastern Province . [Thesis]. University of Zambia; 2013. Available from: http://hdl.handle.net/123456789/3030

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

University of Utah

4. Masbruch, Melissa Dawn. Groundwater temperature and flow studies in the Great Basin.

Degree: PhD, Geology & Geophysics, 2013, University of Utah

URL: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3496/rec/1194

► A monitoring network in the alpine Brighton Basin was established to examinethe relationship between air, ground, and noble gas groundwater recharge temperatures.Maximum noble gas groundwater… (more)

▼ A monitoring network in the alpine Brighton Basin was established to examinethe relationship between air, ground, and noble gas groundwater recharge temperatures.Maximum noble gas groundwater recharge temperatures from 25 samples collected over2 years averaged 2.9±1.2 °C, within the experimental error of the mean groundtemperature of 2.3 °C , and vary from 0 to 7 °C, also comparable to ground temperaturevariations. Mean ground temperatures in the upper 1 m of soil over the 2 years were 1 °Ccooler than mean air temperatures. This offset is explained by modeling a snow effect onground temperature. This study indicates that interpretation of groundwater rechargetemperatures derived from noble gases should be attentive to the local groundtemperature effects in recharge areas.Two-dimensional modeling of fluid flow and heat transport are used to quantifyeffects of groundwater flow on the subsurface thermal regime and determine the lowerlimit of recharge rates that will produce an observable perturbation such that groundwatertemperatures can be used to constrain them. The greatest temperature perturbations occurin the deepest portion of the recharge area. At recharge rates of 10 mm yr"1 or less, thehydrologic disturbance to the subsurface thermal regime is almost completely dependenton the recharge rate. At recharge rates higher than this, the hydrologic disturbance isdependent on both the recharge rate and permeability. At recharge rates of 50 mm yr"1and greater, the plume of colder water persists towards the discharge area and could beeasily measured and used to constrain recharge rates to the system.The Snake Valley area groundwater system was simulated using a threedimensionalmodel incorporating groundwater flow and heat transport. This studyrepresents one of the first regional modeling efforts to include calibration to groundwatertemperatures. The inclusion of temperature observations reduced parameter uncertaintiesover using just water-level altitude and discharge observations. The distribution ofsimulated transmissivity includes areas of high transmissivity within and betweenhydrographic areas. Increased well withdrawals within these areas will likely affect alarge portion of the study area, resulting in decreasing groundwater levels and dischargeto springs and evapotranspiration.

Subjects/Keywords: Groundwater; Groundwater modeling; Temperature

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APA (6^th Edition):

Masbruch, M. D. (2013). Groundwater temperature and flow studies in the Great Basin. (Doctoral Dissertation). University of Utah. Retrieved from http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3496/rec/1194

Chicago Manual of Style (16^th Edition):

Masbruch, Melissa Dawn. “Groundwater temperature and flow studies in the Great Basin.” 2013. Doctoral Dissertation, University of Utah. Accessed March 01, 2021. http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3496/rec/1194.

MLA Handbook (7^th Edition):

Masbruch, Melissa Dawn. “Groundwater temperature and flow studies in the Great Basin.” 2013. Web. 01 Mar 2021.

Vancouver:

Masbruch MD. Groundwater temperature and flow studies in the Great Basin. [Internet] [Doctoral dissertation]. University of Utah; 2013. [cited 2021 Mar 01]. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3496/rec/1194.

Council of Science Editors:

Masbruch MD. Groundwater temperature and flow studies in the Great Basin. [Doctoral Dissertation]. University of Utah; 2013. Available from: http://content.lib.utah.edu/cdm/singleitem/collection/etd3/id/3496/rec/1194

University of Johannesburg

5. Robertson, Natasha. Measuring total toxicity and genotoxic potential of ground-waterborne Dense Non-aqueous Phase Liquids (DNAPL).

Degree: 2010, University of Johannesburg

URL: http://hdl.handle.net/10210/3120

►

M. Tech.

Background: Groundwater is essential for many human activities, especially as a source of drinking water. Contaminated groundwater threatens many valuable water resources which… (more)

Subjects/Keywords: Groundwater quality measurement; Groundwater pollution

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APA (6^th Edition):

Robertson, N. (2010). Measuring total toxicity and genotoxic potential of ground-waterborne Dense Non-aqueous Phase Liquids (DNAPL). (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/3120

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):

Robertson, Natasha. “Measuring total toxicity and genotoxic potential of ground-waterborne Dense Non-aqueous Phase Liquids (DNAPL).” 2010. Thesis, University of Johannesburg. Accessed March 01, 2021. http://hdl.handle.net/10210/3120.

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

MLA Handbook (7^th Edition):

Robertson, Natasha. “Measuring total toxicity and genotoxic potential of ground-waterborne Dense Non-aqueous Phase Liquids (DNAPL).” 2010. Web. 01 Mar 2021.

Vancouver:

Robertson N. Measuring total toxicity and genotoxic potential of ground-waterborne Dense Non-aqueous Phase Liquids (DNAPL). [Internet] [Thesis]. University of Johannesburg; 2010. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10210/3120.

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

Council of Science Editors:

Robertson N. Measuring total toxicity and genotoxic potential of ground-waterborne Dense Non-aqueous Phase Liquids (DNAPL). [Thesis]. University of Johannesburg; 2010. Available from: http://hdl.handle.net/10210/3120

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

University of Texas – Austin

6. -7553-4195. Groundwater flow controls on coastal water quality and global groundwater ages.

Degree: PhD, Geological Sciences, 2015, University of Texas – Austin

URL: http://hdl.handle.net/2152/45858

► Humanity relies on groundwater. But, current consumption may be outpacing groundwater renewal rates, and anthropogenic activities are altering its quality. This dissertation advances the state… (more)

▼ Humanity relies on groundwater. But, current consumption may be outpacing groundwater renewal rates, and anthropogenic activities are altering its quality. This dissertation advances the state of knowledge of how local and regional groundwater dynamics affect its quality and quantity. First, I investigate groundwater discharge patterns and fluxes in three lakes in the Nebraska Sand Hills region and on the island of Rarotonga, Cook Islands, to understand the hydrologic connection between groundwater and surface water in these lacustrine and coastal settings. In Nebraska, I use electrical geophysical methods to characterize the spatial signature of groundwater recharge and discharge to and from the lakes using groundwater salinity patterns. On Rarotonga, a detailed field study of groundwater flow at the intertidal zone shows how groundwater flow influences the thermal regimes of nearshore environments, affecting the biota that live and chemical processes that occur near and below this dynamic interface. Next, a dense network of geophysical surveys across the coastal plain and into the lagoon on Rarotonga constrains multiple features of the larger-scale hydrologic system that are primarily controlled by the local carbonate and volcanic geology on the island. Finally, I give the first estimate of the global storage and spatial distribution of groundwater with a mean age since recharge of less than fifty years. I use several thousand two-dimensional groundwater flow and age-as-mass transport simulations parameterized by the best available hydrologic and geologic datasets. This global analysis suggested that ~6% of the groundwater stored in the upper 2 km of the Earth’s crust is younger than 50 years. Comparing this young groundwater storage to current groundwater depletion rates indicates that more than half of the irrigated areas depending significantly on groundwater could have already used up all of the young groundwater and are using groundwater more quickly than the storage is replenished. Together, these studies advance how to quantify groundwater as a renewable resource through the global estimation of groundwater storage associated with certain timespans and by analyzing the implications of groundwater flow on water quantity and quality in field settings. Advisors/Committee Members: Cardenas, Meinhard Bayani, 1977- (advisor), Gleeson, Thomas P (committee member), Hesse, Marc A (committee member), Paine, Jeffrey G (committee member), Sharp, John M (committee member).

Subjects/Keywords: Groundwater; Hydrology; Submarine groundwater discharge; Electrical resistivity; Coastal groundwater; Groundwater age; Groundwater renewability; Groundwater dynamics; Groundwater storage; Groundwater flow

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APA (6^th Edition):

-7553-4195. (2015). Groundwater flow controls on coastal water quality and global groundwater ages. (Doctoral Dissertation). University of Texas – Austin. Retrieved from http://hdl.handle.net/2152/45858

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Chicago Manual of Style (16^th Edition):

-7553-4195. “Groundwater flow controls on coastal water quality and global groundwater ages.” 2015. Doctoral Dissertation, University of Texas – Austin. Accessed March 01, 2021. http://hdl.handle.net/2152/45858.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

MLA Handbook (7^th Edition):

-7553-4195. “Groundwater flow controls on coastal water quality and global groundwater ages.” 2015. Web. 01 Mar 2021.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Vancouver:

-7553-4195. Groundwater flow controls on coastal water quality and global groundwater ages. [Internet] [Doctoral dissertation]. University of Texas – Austin; 2015. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2152/45858.

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

Council of Science Editors:

-7553-4195. Groundwater flow controls on coastal water quality and global groundwater ages. [Doctoral Dissertation]. University of Texas – Austin; 2015. Available from: http://hdl.handle.net/2152/45858

Note: this citation may be lacking information needed for this citation format:
Author name may be incomplete

San Jose State University

7. Volpi, Christina Maryann. An Investigation of Coastal Groundwater Discharge and Associated Nutrient Inputs Using Electrical Resistivity, Temperature, and Geochemical Tracers in Pescadero Lagoon, California.

Degree: MS, Moss Landing Marine Laboratories, 2014, San Jose State University

URL: https://doi.org/10.31979/etd.jc8y-m8sq ; https://scholarworks.sjsu.edu/etd_theses/4443

► Pescadero Lagoon is a complex lagoon system located on the central California coast in San Mateo County. Over the last decade, external stressors such… (more)

Subjects/Keywords: Groundwater; Pescadero

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APA (6^th Edition):

Volpi, C. M. (2014). An Investigation of Coastal Groundwater Discharge and Associated Nutrient Inputs Using Electrical Resistivity, Temperature, and Geochemical Tracers in Pescadero Lagoon, California. (Masters Thesis). San Jose State University. Retrieved from https://doi.org/10.31979/etd.jc8y-m8sq ; https://scholarworks.sjsu.edu/etd_theses/4443

Chicago Manual of Style (16^th Edition):

Volpi, Christina Maryann. “An Investigation of Coastal Groundwater Discharge and Associated Nutrient Inputs Using Electrical Resistivity, Temperature, and Geochemical Tracers in Pescadero Lagoon, California.” 2014. Masters Thesis, San Jose State University. Accessed March 01, 2021. https://doi.org/10.31979/etd.jc8y-m8sq ; https://scholarworks.sjsu.edu/etd_theses/4443.

MLA Handbook (7^th Edition):

Volpi, Christina Maryann. “An Investigation of Coastal Groundwater Discharge and Associated Nutrient Inputs Using Electrical Resistivity, Temperature, and Geochemical Tracers in Pescadero Lagoon, California.” 2014. Web. 01 Mar 2021.

Vancouver:

Volpi CM. An Investigation of Coastal Groundwater Discharge and Associated Nutrient Inputs Using Electrical Resistivity, Temperature, and Geochemical Tracers in Pescadero Lagoon, California. [Internet] [Masters thesis]. San Jose State University; 2014. [cited 2021 Mar 01]. Available from: https://doi.org/10.31979/etd.jc8y-m8sq ; https://scholarworks.sjsu.edu/etd_theses/4443.

Council of Science Editors:

Volpi CM. An Investigation of Coastal Groundwater Discharge and Associated Nutrient Inputs Using Electrical Resistivity, Temperature, and Geochemical Tracers in Pescadero Lagoon, California. [Masters Thesis]. San Jose State University; 2014. Available from: https://doi.org/10.31979/etd.jc8y-m8sq ; https://scholarworks.sjsu.edu/etd_theses/4443

Oregon State University

8. King, Arthur Solomon, 1906-1972. The flow of water through certain types of water bearing material as affected by well casing perforations.

Degree: MS, Soils, 1930, Oregon State University

URL: http://hdl.handle.net/1957/40068

Subjects/Keywords: Groundwater

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APA (6^th Edition):

King, Arthur Solomon, 1. (1930). The flow of water through certain types of water bearing material as affected by well casing perforations. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/40068

Chicago Manual of Style (16^th Edition):

King, Arthur Solomon, 1906-1972. “The flow of water through certain types of water bearing material as affected by well casing perforations.” 1930. Masters Thesis, Oregon State University. Accessed March 01, 2021. http://hdl.handle.net/1957/40068.

MLA Handbook (7^th Edition):

King, Arthur Solomon, 1906-1972. “The flow of water through certain types of water bearing material as affected by well casing perforations.” 1930. Web. 01 Mar 2021.

Vancouver:

King, Arthur Solomon 1. The flow of water through certain types of water bearing material as affected by well casing perforations. [Internet] [Masters thesis]. Oregon State University; 1930. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1957/40068.

Council of Science Editors:

King, Arthur Solomon 1. The flow of water through certain types of water bearing material as affected by well casing perforations. [Masters Thesis]. Oregon State University; 1930. Available from: http://hdl.handle.net/1957/40068

Addis Ababa University

9. ABDISA, KAWO. GRAVITY AND ELECTRICAL METHODS FOR GROUNDWATER RESOURES POTENTIAL ASSESEMENT AND MAPPING OF AQUFIERS, WOBOK-DILO AREA, BORENA, SOUTH ETHIOPIA .

Degree: 2013, Addis Ababa University

URL: http://etd.aau.edu.et/dspace/handle/123456789/888

► A combined geophysical survey using vertical electrical sounding (VES) and gravity methods was conducted to investigate groundwater potential zones and geological structures at Wobok- Dilo… (more)

▼ A combined geophysical survey using vertical electrical sounding (VES) and gravity methods was conducted to investigate groundwater potential zones and geological structures at Wobok- Dilo area, Borena zone, in South Ethiopia. The area being dominantly of basement rock lithology with interspersed volcanics and with scarcely known groundwater potential, the main objectives of this study were to map groundwater potential zones and determine depth to the basement. Geologically, the Wobok-Dilo area lies on dominantly volcanic terrain. The exposed basaltic formations over the area are highly vesicular and scoracious basalts. The geophysical surveys included twenty one (21) VES points, using Schlumberger electrode array ,with maximum half current electrode spacing AB/2=1000m and 103 gravity measuring points. These were interpreted both qualitatively and quantitatively in order to infer the subsurface geology and identify aquifer bearing horizons. The qualitative analysis of VES data were performed by using pseudodepth sections and different apparent resistivity maps. Similarly, the qualitative interpretations of gravity data were performed by using different gravity anomaly maps. The quantitative interpretations of the VES data were conducted by modeling the VES data using ResixIP and WinResist modeling software and constructing geoelectric sections along selected survey lines, using the result from individual VES point interpretations. The depth and lithologic units from the borehole was used to constrain the parameters during the modeling of VES data. The information from the VES data and the borehole were also used to constrain the depth information in the gravity modeling which were conducted on one survey line. The VES results revealed six to seven main geoelectric layers which differ in degree of weathering, fracturing, composition and depth of burial. The geoelectric sections enabled to identify the depth to the aquifer along survey lines whereas the gravity model helped to identify basement undulation and map structures. Finally, the overall interpretation was done by integrating all the above results together with the topographic maps and borehole information. As a result of these, geologic structures and groundwater potential zones are identified and drilling sites for potentially productive boreholes are recommended. Advisors/Committee Members: Dr. Elias Lewi (advisor).

Subjects/Keywords: GROUNDWATER; AQUFIERS

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APA (6^th Edition):

ABDISA, K. (2013). GRAVITY AND ELECTRICAL METHODS FOR GROUNDWATER RESOURES POTENTIAL ASSESEMENT AND MAPPING OF AQUFIERS, WOBOK-DILO AREA, BORENA, SOUTH ETHIOPIA . (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/888

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):

ABDISA, KAWO. “GRAVITY AND ELECTRICAL METHODS FOR GROUNDWATER RESOURES POTENTIAL ASSESEMENT AND MAPPING OF AQUFIERS, WOBOK-DILO AREA, BORENA, SOUTH ETHIOPIA .” 2013. Thesis, Addis Ababa University. Accessed March 01, 2021. http://etd.aau.edu.et/dspace/handle/123456789/888.

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

MLA Handbook (7^th Edition):

ABDISA, KAWO. “GRAVITY AND ELECTRICAL METHODS FOR GROUNDWATER RESOURES POTENTIAL ASSESEMENT AND MAPPING OF AQUFIERS, WOBOK-DILO AREA, BORENA, SOUTH ETHIOPIA .” 2013. Web. 01 Mar 2021.

Vancouver:

ABDISA K. GRAVITY AND ELECTRICAL METHODS FOR GROUNDWATER RESOURES POTENTIAL ASSESEMENT AND MAPPING OF AQUFIERS, WOBOK-DILO AREA, BORENA, SOUTH ETHIOPIA . [Internet] [Thesis]. Addis Ababa University; 2013. [cited 2021 Mar 01]. Available from: http://etd.aau.edu.et/dspace/handle/123456789/888.

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

Council of Science Editors:

ABDISA K. GRAVITY AND ELECTRICAL METHODS FOR GROUNDWATER RESOURES POTENTIAL ASSESEMENT AND MAPPING OF AQUFIERS, WOBOK-DILO AREA, BORENA, SOUTH ETHIOPIA . [Thesis]. Addis Ababa University; 2013. Available from: http://etd.aau.edu.et/dspace/handle/123456789/888

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

10. Welch, Christina, N. What Lies Below: Options to Improve Sustainable Management of U.S./Mexico Transboundary Aquifers.

Degree: MS, 2017, Oregon State University

URL: http://hdl.handle.net/1957/61385

► Globally, as surface water quality and quantity diminishes there is increasing reliance on groundwater to buffer water demands of growing populations. Today in many arid… (more)

▼ Globally, as surface water quality and quantity diminishes there is increasing reliance on groundwater to buffer water demands of growing populations. Today in many arid regions around the world aquifer pumping rates far exceed recharge rates. Often the groundwater is nonrenewable, or thousands of years old. Despite the known hydrologic connection between surface and groundwater, existing institutions and laws governing surface water are poorly equipped to manage groundwater. While there are more than 600 international treaties governing surface water, only one treaty worldwide explicitly addresses groundwater allocation. Like many other regions of the world, the treaties covering the Paseo del Norte region shared between Mexico and the United States allocate the quantity and timing of surface water deliveries, yet fail to regulate groundwater abstraction. The three transboundary aquifers shared by two countries and three states (New Mexico/U.S., Texas/U.S., and Chihuahua/MX) within Paseo del Norte study area present an ideal microcosm to closer examine water management institutions across the local, state, national, and international scales. This research assesses the United States and Mexico’s institutional capacity to manage groundwater across each scale. The problem is imminent since the Hueco Bolson transboundary aquifer is the primary source of drinking water for nearly 2 million people and the fresh water is predicted to be completely depleted between 2020-2050. The ultimate objective is to identify which future legal, scientific and economic options can best contribute to more sustainable management of transboundary aquifers without compromising water security in both countries. This research proposes three major paths to move forward: the first step is to increase public awareness of the aquifer exploitation problem; second, for water managers to accurately plan for future water demands there should be a binational groundwater model built by scientists on both sides of the border; third, an international treaty or regional joint agreement is necessary to legally support groundwater management efforts. Advisors/Committee Members: Wolf, Aaron, T. (advisor), Campana, Michael (committee member).

Subjects/Keywords: Groundwater

…17 Figure 6. Applicable Groundwater Principles… …Example groundwater monitoring well with groundwater levels publically accessible. ......... 103… …16 Table 4. Timeline of International Instruments with Transboundary Groundwater… …33 Table 6. Groundwater Sharing Arrangements… …1) Groundwater accounts for 98-99% of the available freshwater resources globally…

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APA (6^th Edition):

Welch, Christina, N. (2017). What Lies Below: Options to Improve Sustainable Management of U.S./Mexico Transboundary Aquifers. (Masters Thesis). Oregon State University. Retrieved from http://hdl.handle.net/1957/61385

Chicago Manual of Style (16^th Edition):

Welch, Christina, N. “What Lies Below: Options to Improve Sustainable Management of U.S./Mexico Transboundary Aquifers.” 2017. Masters Thesis, Oregon State University. Accessed March 01, 2021. http://hdl.handle.net/1957/61385.

MLA Handbook (7^th Edition):

Welch, Christina, N. “What Lies Below: Options to Improve Sustainable Management of U.S./Mexico Transboundary Aquifers.” 2017. Web. 01 Mar 2021.

Vancouver:

Welch, Christina N. What Lies Below: Options to Improve Sustainable Management of U.S./Mexico Transboundary Aquifers. [Internet] [Masters thesis]. Oregon State University; 2017. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1957/61385.

Council of Science Editors:

Welch, Christina N. What Lies Below: Options to Improve Sustainable Management of U.S./Mexico Transboundary Aquifers. [Masters Thesis]. Oregon State University; 2017. Available from: http://hdl.handle.net/1957/61385

University of Waikato

11. Noakes, Katie. Monitoring and hydrodynamic modelling of groundwater inflows into Lake Rotokakahi, New Zealand .

Degree: 2016, University of Waikato

URL: http://hdl.handle.net/10289/11239

► Lake Rotokakahi is located 10 km south of Rotorua and is of immense cultural importance to the local iwi. The lake also has significant historical… (more)

▼ Lake Rotokakahi is located 10 km south of Rotorua and is of immense cultural importance to the local iwi. The lake also has significant historical and recreational values, which prompted iwi to make the lake private in 1996. Lake Rotokakahi is one of several Rotorua/ Te Arawa lakes. Several of these lakes have become eutrophic and some have declining water quality. This study was prompted by declining water quality of Lake Rotokakahi and the need to identify potential sources of nutrients to the lake, particularly groundwater inflows. The interaction between groundwater and surface water has a major influence on the trophic status of lakes, particularly those that are predominantly or solely groundwater fed systems. Lake Rotokakahi has one small spring-fed surface water inflow and one outflow, the Te Wairoa stream. Thus the lake is predominantly groundwater fed. The main objective of this thesis was to quantify the contribution of groundwater and surface water to Lake Rotokakahi and to examine interactions of the groundwater system with the lake, in order to provide a basis to improve lake management practices. Multiple monitoring sites were established around the perimeter of the lake to determine the spatial and temporal variation of groundwater inputs, as well as the groundwater nutrient dynamics. A three-dimensional hydrodynamic lake model was set up and simulations were used to examine how groundwater and surface water inflows were dispersed within the lake upon entry. Monitoring of the shallow groundwater system took place from 1 January to 1 July 2016. Three separate storm events were monitored at high frequency within this monitoring period. The monitoring results showed the groundwater system varied significantly both spatially and temporally and also contributed a high proportion of the total nutrient load to the lake. Groundwater discharge and nutrient concentrations generally increased in association with or immediately following high rainfall events. The three-dimensional model ELCOM was set up using hydrological data for the catchment, meteorological data from a nearby station and bathymetry of the lake. Simulations were based upon different methods of calculating groundwater inflows. Simulation 1 was based upon the common water balance equation method. Simulation 2 used constant groundwater inflow and outflow volumes as determined by a groundwater flow model, MODFLOW, which had been applied to the catchment by White et al., (2015). Simulation 3 combined MODLFOW values and measured groundwater levels to create a varying inflow volume based on water level. The three simulations accurately captured surface and bottom temperatures and had varying lake water levels. Only simulation 3 accurately captured the presence of the groundwater spring near the lake shore and was concluded the more accurate method of groundwater inflow calculation. Advisors/Committee Members: Hamilton, David P (advisor).

Subjects/Keywords: Groundwater; Lakes

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APA (6^th Edition):

Noakes, K. (2016). Monitoring and hydrodynamic modelling of groundwater inflows into Lake Rotokakahi, New Zealand . (Masters Thesis). University of Waikato. Retrieved from http://hdl.handle.net/10289/11239

Chicago Manual of Style (16^th Edition):

Noakes, Katie. “Monitoring and hydrodynamic modelling of groundwater inflows into Lake Rotokakahi, New Zealand .” 2016. Masters Thesis, University of Waikato. Accessed March 01, 2021. http://hdl.handle.net/10289/11239.

MLA Handbook (7^th Edition):

Noakes, Katie. “Monitoring and hydrodynamic modelling of groundwater inflows into Lake Rotokakahi, New Zealand .” 2016. Web. 01 Mar 2021.

Vancouver:

Noakes K. Monitoring and hydrodynamic modelling of groundwater inflows into Lake Rotokakahi, New Zealand . [Internet] [Masters thesis]. University of Waikato; 2016. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10289/11239.

Council of Science Editors:

Noakes K. Monitoring and hydrodynamic modelling of groundwater inflows into Lake Rotokakahi, New Zealand . [Masters Thesis]. University of Waikato; 2016. Available from: http://hdl.handle.net/10289/11239

University of Manitoba

12. Allard, Remi J.P. A groundwater modelling application for a groundwater flow problem for a shallow unconfined aquifer in Borno State, Nigeria.

Degree: Civil Engineering, 2014, University of Manitoba

URL: http://hdl.handle.net/1993/23660

N/A Advisors/Committee Members: N/A (supervisor), N/A (examiningcommittee).

Subjects/Keywords: Groundwater

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APA (6^th Edition):

Allard, R. J. P. (2014). A groundwater modelling application for a groundwater flow problem for a shallow unconfined aquifer in Borno State, Nigeria. (Masters Thesis). University of Manitoba. Retrieved from http://hdl.handle.net/1993/23660

Chicago Manual of Style (16^th Edition):

Allard, Remi J P. “A groundwater modelling application for a groundwater flow problem for a shallow unconfined aquifer in Borno State, Nigeria.” 2014. Masters Thesis, University of Manitoba. Accessed March 01, 2021. http://hdl.handle.net/1993/23660.

MLA Handbook (7^th Edition):

Allard, Remi J P. “A groundwater modelling application for a groundwater flow problem for a shallow unconfined aquifer in Borno State, Nigeria.” 2014. Web. 01 Mar 2021.

Vancouver:

Allard RJP. A groundwater modelling application for a groundwater flow problem for a shallow unconfined aquifer in Borno State, Nigeria. [Internet] [Masters thesis]. University of Manitoba; 2014. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1993/23660.

Council of Science Editors:

Allard RJP. A groundwater modelling application for a groundwater flow problem for a shallow unconfined aquifer in Borno State, Nigeria. [Masters Thesis]. University of Manitoba; 2014. Available from: http://hdl.handle.net/1993/23660

13. Breider, Florian. Investigating the origin of chloroform in soils and groundwater using carbon and chlorine stable isotopes analysis.

Degree: 2013, Université de Neuchâtel

URL: http://doc.rero.ch/record/31443

► Chloroform (CHCl₃) has been considered for a long time as an anthropogenic contaminant which is known to be possibly carcinogenic to humans. Chloroform is also… (more)

▼ Chloroform (CHCl₃) has been considered for a long time as an anthropogenic contaminant which is known to be possibly carcinogenic to humans. Chloroform is also an important contributor to gaseous chlorine in the atmosphere and may catalyze some chemical reactions in the lower atmosphere. The presence of chloroform in aquatic and terrestrial environments has been widely demonstrated. The frequent detection of chloroform in forest soils, peatland and groundwater in absence of other anthropogenic contaminants suggests that chloroform may be produced naturally by biogeochemical processes. Numerous studies on natural organohalogens have suggested that enzymes such as haloperoxidases (e.g. chloroperoxidase from <i>Caldariomyces fumago</i>) and halogenases excreted by some fungi, plants and bacteria could play an important role in biosynthesis of chlorinated organic compounds in soils. Although the natural formation of chloroform in some forest soils and peatlands is rather well establish, it is difficult to demonstrate a natural origin of chloroform in groundwater as chloroform is widely used as solvent or chemical reagent and can be transported over extended distances from anthropogenic sources. For risk assessment and to implement appropriate remediation measures, there is a need for methods to differentiate between natural and anthropogenic chloroform. Moreover, little is known about the mechanisms leading to the formation of natural chloroform in the terrestrial environment. This PhD thesis investigates if stable isotope methods can be used to distinguish between different sources of chloroform and provide additional insight into the mechanism of natural chloroform formation. It is expected that anthropogenic and natural chloroform have a different isotope signature due to the differences in the origin of the carbon and formation mechanisms. To evaluate the feasibility of the method, the isotope signature of chloroform was characterized at forested sites where chloroform is likely produced naturally and compared to the isotope signature in underlying groundwater. In addition, the isotope composition of industrial chloroform and chloroform at sites with known anthropogenic contamination was evaluated. Based on previous studies, chloroform formation might proceed via the formation of trichloroacetyl-containing compounds (TCAc) from which chloroform is released by hydrolysis. To confirm this hypothesis, the concentration and isotope ratio of TCAc was quantified as well at the sites where natural chloroform production was observed. The mechanism of chloroform formation and factors that control the isotope ratio of chloroform were investigated in more detailed using laboratory chlorination experiments. In addition to NOM, simple model compounds were used which make it easier to relate observed isotope trends to underlying reaction mechanisms. Chlorination was induced by using chloroperoxidase (CPO) and HOCl, which is expected to be the active compound also during enzymatic chlorination. A first set of… Advisors/Committee Members: Daniel (Dir.).

Subjects/Keywords: groundwater

…peatland and groundwater in absence of other anthropogenic contaminants suggests that chloroform… …difficult to demonstrate a natural origin of chloroform in groundwater as chloroform is widely… …naturally and compared to the isotope signature in underlying groundwater. In addition, the… …that carbon isotope analysis can be used to determine the origin of chloroform in groundwater… …the 13C of chloroform was determined in soil gas and groundwater at five different sites…

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APA (6^th Edition):

Breider, F. (2013). Investigating the origin of chloroform in soils and groundwater using carbon and chlorine stable isotopes analysis. (Thesis). Université de Neuchâtel. Retrieved from http://doc.rero.ch/record/31443

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):

Breider, Florian. “Investigating the origin of chloroform in soils and groundwater using carbon and chlorine stable isotopes analysis.” 2013. Thesis, Université de Neuchâtel. Accessed March 01, 2021. http://doc.rero.ch/record/31443.

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

MLA Handbook (7^th Edition):

Breider, Florian. “Investigating the origin of chloroform in soils and groundwater using carbon and chlorine stable isotopes analysis.” 2013. Web. 01 Mar 2021.

Vancouver:

Breider F. Investigating the origin of chloroform in soils and groundwater using carbon and chlorine stable isotopes analysis. [Internet] [Thesis]. Université de Neuchâtel; 2013. [cited 2021 Mar 01]. Available from: http://doc.rero.ch/record/31443.

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

Council of Science Editors:

Breider F. Investigating the origin of chloroform in soils and groundwater using carbon and chlorine stable isotopes analysis. [Thesis]. Université de Neuchâtel; 2013. Available from: http://doc.rero.ch/record/31443

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

California State University – East Bay

14. De Jong, Menso. Analysis of Extrinsic Tracer Data at Seawater Intrusion Barriers in Los Angeles County.

Degree: MSin Geology, 2014, California State University – East Bay

URL: http://hdl.handle.net/10211.3/132665

► Dissolved noble gases were deployed as tracers to track groundwater between Water Replenishment District of Southern California (WRD) seawater intrusion barrier injection well arrays and… (more)

Subjects/Keywords: Groundwater – California

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APA (6^th Edition):

De Jong, M. (2014). Analysis of Extrinsic Tracer Data at Seawater Intrusion Barriers in Los Angeles County. (Masters Thesis). California State University – East Bay. Retrieved from http://hdl.handle.net/10211.3/132665

Chicago Manual of Style (16^th Edition):

De Jong, Menso. “Analysis of Extrinsic Tracer Data at Seawater Intrusion Barriers in Los Angeles County.” 2014. Masters Thesis, California State University – East Bay. Accessed March 01, 2021. http://hdl.handle.net/10211.3/132665.

MLA Handbook (7^th Edition):

De Jong, Menso. “Analysis of Extrinsic Tracer Data at Seawater Intrusion Barriers in Los Angeles County.” 2014. Web. 01 Mar 2021.

Vancouver:

De Jong M. Analysis of Extrinsic Tracer Data at Seawater Intrusion Barriers in Los Angeles County. [Internet] [Masters thesis]. California State University – East Bay; 2014. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10211.3/132665.

Council of Science Editors:

De Jong M. Analysis of Extrinsic Tracer Data at Seawater Intrusion Barriers in Los Angeles County. [Masters Thesis]. California State University – East Bay; 2014. Available from: http://hdl.handle.net/10211.3/132665

Montana State University

15. Schaffer, Mark Andrew. Ground-water discharge and aquifer recharge zones near Four Corners, Gallatin County, Montana.

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

URL: https://scholarworks.montana.edu/xmlui/handle/1/2192

► The West Gallatin River is closed to new surface water appropriations. Montana law recognizes the potential for new ground-water developments to compromise existing surface-water rights.… (more)

▼ The West Gallatin River is closed to new surface water appropriations. Montana law recognizes the potential for new ground-water developments to compromise existing surface-water rights. Determining the effects of new ground-water development upon existing surface-water users requires a detailed understanding of the hydrologic system and the surface and ground water exchanges, which is not available in the Four Corners area of Gallatin County Montana. Hydrologic data was collected during the 2006 water year. Data was collected on stream discharge, streambed hydraulic gradients, temperature, ground-water levels, and specific electrical conductance to characterize zones of upwelling ground water and downwelling surface water. The river and aquifer share a complex hydrologic connection. Some reaches of river gained streamflow from the aquifer and contained zones of downwelling surface water. Other reaches of river which lost water to the aquifer, contained zones of upwelling ground water. Water moved back and forth between the river and aquifer through a variety of hydrologic pathways including; seepage below irrigation canals and irrigated land, drainage ditches from irrigated lands, spring channels, and the porous alluvial riverbed. Ground-water discharge to the stream contributed 8% of the streamflow when no irrigation was occurring in November 2005. In August 2006 during the irrigation season, the volume and relative contribution of ground-water discharge increased to 28% of the streamflow. The data collected from this study was compared to historic water-level data collected during the 1950's and later in the 1990's. This study's analysis benefited from the comparison of surface-water levels to ground-water levels, streambed hydraulic gradients, continuous records of ground-water levels and temperatures from near stream wells. Data from this study indicates that a consistent zone of downwelling surface water was present north of Four Corners which had not been identified in past surveys. However, the baseline data was found to be insufficient for a comparison to this analysis due to a lack of surface water data collected in the previous studies. As a result, it remains unclear whether the zone of downwelling has always been present or represents a change to the hydrologic system at Four Corners. Advisors/Committee Members: Chairperson, Graduate Committee: Stephan G. Custer (advisor).

Subjects/Keywords: Groundwater recharge.

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APA (6^th Edition):

Schaffer, M. A. (2011). Ground-water discharge and aquifer recharge zones near Four Corners, Gallatin County, Montana. (Masters Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/2192

Chicago Manual of Style (16^th Edition):

Schaffer, Mark Andrew. “Ground-water discharge and aquifer recharge zones near Four Corners, Gallatin County, Montana.” 2011. Masters Thesis, Montana State University. Accessed March 01, 2021. https://scholarworks.montana.edu/xmlui/handle/1/2192.

MLA Handbook (7^th Edition):

Schaffer, Mark Andrew. “Ground-water discharge and aquifer recharge zones near Four Corners, Gallatin County, Montana.” 2011. Web. 01 Mar 2021.

Vancouver:

Schaffer MA. Ground-water discharge and aquifer recharge zones near Four Corners, Gallatin County, Montana. [Internet] [Masters thesis]. Montana State University; 2011. [cited 2021 Mar 01]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/2192.

Council of Science Editors:

Schaffer MA. Ground-water discharge and aquifer recharge zones near Four Corners, Gallatin County, Montana. [Masters Thesis]. Montana State University; 2011. Available from: https://scholarworks.montana.edu/xmlui/handle/1/2192

Montana State University

16. Hay, James Ernest. An investigation of groundwater recharge along the western flank of the southern Bridger Range, southwestern Montana.

Degree: MS, College of Letters & Science, 1997, Montana State University

URL: https://scholarworks.montana.edu/xmlui/handle/1/7454

Subjects/Keywords: Groundwater.

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APA (6^th Edition):

Hay, J. E. (1997). An investigation of groundwater recharge along the western flank of the southern Bridger Range, southwestern Montana. (Masters Thesis). Montana State University. Retrieved from https://scholarworks.montana.edu/xmlui/handle/1/7454

Chicago Manual of Style (16^th Edition):

Hay, James Ernest. “An investigation of groundwater recharge along the western flank of the southern Bridger Range, southwestern Montana.” 1997. Masters Thesis, Montana State University. Accessed March 01, 2021. https://scholarworks.montana.edu/xmlui/handle/1/7454.

MLA Handbook (7^th Edition):

Hay, James Ernest. “An investigation of groundwater recharge along the western flank of the southern Bridger Range, southwestern Montana.” 1997. Web. 01 Mar 2021.

Vancouver:

Hay JE. An investigation of groundwater recharge along the western flank of the southern Bridger Range, southwestern Montana. [Internet] [Masters thesis]. Montana State University; 1997. [cited 2021 Mar 01]. Available from: https://scholarworks.montana.edu/xmlui/handle/1/7454.

Council of Science Editors:

Hay JE. An investigation of groundwater recharge along the western flank of the southern Bridger Range, southwestern Montana. [Masters Thesis]. Montana State University; 1997. Available from: https://scholarworks.montana.edu/xmlui/handle/1/7454

Texas Tech University

17. Knowles, Tommy R. The Development of a Computer Model for Confined and Unconfined Aquifers.

Degree: 1971, Texas Tech University

URL: http://hdl.handle.net/2346/10676

Subjects/Keywords: Groundwater

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APA (6^th Edition):

Knowles, T. R. (1971). The Development of a Computer Model for Confined and Unconfined Aquifers. (Thesis). Texas Tech University. Retrieved from http://hdl.handle.net/2346/10676

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):

Knowles, Tommy R. “The Development of a Computer Model for Confined and Unconfined Aquifers.” 1971. Thesis, Texas Tech University. Accessed March 01, 2021. http://hdl.handle.net/2346/10676.

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

MLA Handbook (7^th Edition):

Knowles, Tommy R. “The Development of a Computer Model for Confined and Unconfined Aquifers.” 1971. Web. 01 Mar 2021.

Vancouver:

Knowles TR. The Development of a Computer Model for Confined and Unconfined Aquifers. [Internet] [Thesis]. Texas Tech University; 1971. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2346/10676.

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

Council of Science Editors:

Knowles TR. The Development of a Computer Model for Confined and Unconfined Aquifers. [Thesis]. Texas Tech University; 1971. Available from: http://hdl.handle.net/2346/10676

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

University of Arizona

18. Kahler, Elizabeth. Application of Feedback Analysis in Hydrological Modeling .

Degree: 2018, University of Arizona

URL: http://hdl.handle.net/10150/628090

► Feedback analysis has been a standard element of the design of electrical systems for almost one hundred years and has been an important tool in… (more)

Subjects/Keywords: feedback; groundwater

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APA (6^th Edition):

Kahler, E. (2018). Application of Feedback Analysis in Hydrological Modeling . (Masters Thesis). University of Arizona. Retrieved from http://hdl.handle.net/10150/628090

Chicago Manual of Style (16^th Edition):

Kahler, Elizabeth. “Application of Feedback Analysis in Hydrological Modeling .” 2018. Masters Thesis, University of Arizona. Accessed March 01, 2021. http://hdl.handle.net/10150/628090.

MLA Handbook (7^th Edition):

Kahler, Elizabeth. “Application of Feedback Analysis in Hydrological Modeling .” 2018. Web. 01 Mar 2021.

Vancouver:

Kahler E. Application of Feedback Analysis in Hydrological Modeling . [Internet] [Masters thesis]. University of Arizona; 2018. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10150/628090.

Council of Science Editors:

Kahler E. Application of Feedback Analysis in Hydrological Modeling . [Masters Thesis]. University of Arizona; 2018. Available from: http://hdl.handle.net/10150/628090

University of Waterloo

19. Moore, Tara A. Detection of Anammox Bacteria in Ammonium-Contaminated Groundwater.

Degree: 2011, University of Waterloo

URL: http://hdl.handle.net/10012/6332

► Anaerobic ammonium-oxidizing (anammox) bacteria perform an important step in the global nitrogen cycle: oxidizing ammonium and reducing nitrite to form dinitrogen gas in the absence… (more)

Subjects/Keywords: anammox; groundwater

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APA (6^th Edition):

Moore, T. A. (2011). Detection of Anammox Bacteria in Ammonium-Contaminated Groundwater. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/6332

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):

Moore, Tara A. “Detection of Anammox Bacteria in Ammonium-Contaminated Groundwater.” 2011. Thesis, University of Waterloo. Accessed March 01, 2021. http://hdl.handle.net/10012/6332.

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

MLA Handbook (7^th Edition):

Moore, Tara A. “Detection of Anammox Bacteria in Ammonium-Contaminated Groundwater.” 2011. Web. 01 Mar 2021.

Vancouver:

Moore TA. Detection of Anammox Bacteria in Ammonium-Contaminated Groundwater. [Internet] [Thesis]. University of Waterloo; 2011. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10012/6332.

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

Council of Science Editors:

Moore TA. Detection of Anammox Bacteria in Ammonium-Contaminated Groundwater. [Thesis]. University of Waterloo; 2011. Available from: http://hdl.handle.net/10012/6332

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

Queens University

20. Miles, Owen. Processes Governing Rapid Recharge Events in a Shallow Fractured Rock Aquifer Having Minimal Overburden Cover .

Degree: Civil Engineering, 2013, Queens University

URL: http://hdl.handle.net/1974/8421

► The goal of this work is to investigate the influence of overburden cover on controlling recharge to a bedrock aquifer, specifically focusing on rapid recharge… (more)

Subjects/Keywords: Recharge ; Groundwater

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APA (6^th Edition):

Miles, O. (2013). Processes Governing Rapid Recharge Events in a Shallow Fractured Rock Aquifer Having Minimal Overburden Cover . (Thesis). Queens University. Retrieved from http://hdl.handle.net/1974/8421

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):

Miles, Owen. “Processes Governing Rapid Recharge Events in a Shallow Fractured Rock Aquifer Having Minimal Overburden Cover .” 2013. Thesis, Queens University. Accessed March 01, 2021. http://hdl.handle.net/1974/8421.

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

MLA Handbook (7^th Edition):

Miles, Owen. “Processes Governing Rapid Recharge Events in a Shallow Fractured Rock Aquifer Having Minimal Overburden Cover .” 2013. Web. 01 Mar 2021.

Vancouver:

Miles O. Processes Governing Rapid Recharge Events in a Shallow Fractured Rock Aquifer Having Minimal Overburden Cover . [Internet] [Thesis]. Queens University; 2013. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1974/8421.

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

Council of Science Editors:

Miles O. Processes Governing Rapid Recharge Events in a Shallow Fractured Rock Aquifer Having Minimal Overburden Cover . [Thesis]. Queens University; 2013. Available from: http://hdl.handle.net/1974/8421

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

Louisiana State University

21. McCammon, Miles Alexander. Variations in pore water salinities above and below allochthonous salt sheets in the deepwater Gulf of Mexico: implications for mechanisms of solute transport.

Degree: MS, Earth Sciences, 2011, Louisiana State University

URL: etd-01232012-154927 ; https://digitalcommons.lsu.edu/gradschool_theses/1911

► Spatial variations in salinity of pore waters in marine sediments provide useful information on processes and rates of subseafloor fluid flow and solute transport, particularly… (more)

▼ Spatial variations in salinity of pore waters in marine sediments provide useful information on processes and rates of subseafloor fluid flow and solute transport, particularly if there are evaporites in the section. Pore water salinities were determined for 18 drill holes which penetrated allochthonous salt bodies in 12 widely-scattered protraction blocks on the Louisiana offshore continental shelf and slope. Salinities were calculated from Log ASCII Standard-Logging While Drilling (LAS-LWD) logs using the Revil et al. (1998) dual-conductivity technique. The sites represent a wide range of field settings. Water depths range from 30 to 1990 m, depths to the top of salt from the seafloor range from 440 to 5200 m, and salt thicknesses range from 70 to 2000 m. Sediment ages above and below salt and approximate sedimentation rates were determined from Bureau of Ocean Energy Management (BOEM) paleontological data and range from Miocene to Recent. Sites in eight blocks have concave downward salinity profiles above salt, consistent with transient molecular diffusive transport with possible compaction-driven flow. The salinity profiles were modeled using two scenarios: 1) salt was emplaced at its present depth, and molecular diffusion upward from the top of salt has been the sole solute transport mechanism; 2) salt was emplaced near the seafloor, and there has been progressive burial of salt with compaction-driven advective flow upward since. The time required by molecular diffusion alone tends to exceed the age of the sediments. A better fit in space and time is obtained on the assumption that sediment compaction is also a driving force. Salinities in two blocks increase upward, possibly reflecting lateral flow of brines from shallower salt. Salinities in the two remaining blocks are elevated but constant for distances of 500 to 1000 m above salt and may reflect ponding of brines derived from shallower salt. At sites where there is subsalt information, the salinity profiles are generally convex upward, reflecting probable diffusional transport downward. The results are consistent with an earlier LSU study which concluded that dominant mechanisms of vertical solute transport in deepwater Gulf of Mexico sediments include diffusion and compaction-driven advection.

Subjects/Keywords: groundwater; modeling

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APA (6^th Edition):

McCammon, M. A. (2011). Variations in pore water salinities above and below allochthonous salt sheets in the deepwater Gulf of Mexico: implications for mechanisms of solute transport. (Masters Thesis). Louisiana State University. Retrieved from etd-01232012-154927 ; https://digitalcommons.lsu.edu/gradschool_theses/1911

Chicago Manual of Style (16^th Edition):

McCammon, Miles Alexander. “Variations in pore water salinities above and below allochthonous salt sheets in the deepwater Gulf of Mexico: implications for mechanisms of solute transport.” 2011. Masters Thesis, Louisiana State University. Accessed March 01, 2021. etd-01232012-154927 ; https://digitalcommons.lsu.edu/gradschool_theses/1911.

MLA Handbook (7^th Edition):

McCammon, Miles Alexander. “Variations in pore water salinities above and below allochthonous salt sheets in the deepwater Gulf of Mexico: implications for mechanisms of solute transport.” 2011. Web. 01 Mar 2021.

Vancouver:

McCammon MA. Variations in pore water salinities above and below allochthonous salt sheets in the deepwater Gulf of Mexico: implications for mechanisms of solute transport. [Internet] [Masters thesis]. Louisiana State University; 2011. [cited 2021 Mar 01]. Available from: etd-01232012-154927 ; https://digitalcommons.lsu.edu/gradschool_theses/1911.

Council of Science Editors:

McCammon MA. Variations in pore water salinities above and below allochthonous salt sheets in the deepwater Gulf of Mexico: implications for mechanisms of solute transport. [Masters Thesis]. Louisiana State University; 2011. Available from: etd-01232012-154927 ; https://digitalcommons.lsu.edu/gradschool_theses/1911

Kansas State University

22. Koehn, Weston. Novel Hydrogeologic Characterization Methods: Utilizing the Analytic Element Method in Hydrogeophysical Studies.

Degree: PhD, Department of Civil Engineering, 2020, Kansas State University

URL: http://hdl.handle.net/2097/40354

► An accurate conceptualization of groundwater-surface water connectivity is critical for quantification of fluxes between rivers and aquifers. Point based hydrologic data provides a useful indicator… (more)

▼ An accurate conceptualization of groundwater-surface water connectivity is critical for quantification of fluxes between rivers and aquifers. Point based hydrologic data provides a useful indicator to delineate an aquifers response to changes in streamflow; however, supplementary hydrogeologic information is often needed to fully constrain connectivity patterns due to the presence of focused recharge pathways. Electrical resistivity tomography (ERT) is a near surface geophysical method that determines the electrical resistivity distribution within the earth. Electrical resistivity is an intrinsic material property that is strongly correlated to hydrogeologic properties (e.g., water content, porosity, pore fluid salinity, clay content). The spatial and temporal distribution of electrical resistivity provides insight into the hydrologic state of sediments. Ultimately, changes in electrical resistivity across space and time provide of level of understanding about hydrogeologic processes that is unmatched by the analysis of point based hydrologic measurements alone. ERT surveys were conducted along the Arkansas River in Western Kansas to depict the hydrologic state of riverbed sediments, and to gain insight on the hydrologic response of the sediments across changes in streamflow and the hydrogeologic landscape. The electrical resistivity profiles revealed large contrasts in resistivity beneath portions of the inundated riverbed, indicating different regimes of groundwater-surface water (gw-sw) connectivity persist both spatially and temporally. Although the initial results of the study indicated that ERT can be used to observe differences in gw-sw connectivity through time and space, a more rigorous hydrogeologic interpretation of ERT surveys is needed to bridge the gap between quantitative groundwater models and the information provided by geophysical earth models. This motivated the inclusion of the Analytic Element Method (AEM) into geophysical inversion and ERT survey design to further advance the ability of near surface geophysics to fully exploit the hydrogeologic information inherent geophysical data. Electrical conduction through soil was modelled using the AEM. Soil was represented using interconnected rectangular elements, each with a constant electrical resistivity. The forward response of an ERT array was generated over layered resistivity models. The AEM model matched electrostatic boundary an interface conditions to high accuracy for lowly and highly resistivity layers, as well as for isolated inclusions within uniform backgrounds. The implementation of a particle swarm optimization scheme was used to reconstruct resistivity models from synthetic data, which were in good agreement with the known model within the theoretical depths investigation of the simulated array. Resistivity models constructed from field data were highly dependent on the norm used. Simulations that used the root mean square percentage error as the norm significantly underestimated the voltage potentials measured near the source pair.… Advisors/Committee Members: Stacey E. KuleszaDavid R. Steward.

Subjects/Keywords: groundwater; geophysics

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APA (6^th Edition):

Koehn, W. (2020). Novel Hydrogeologic Characterization Methods: Utilizing the Analytic Element Method in Hydrogeophysical Studies. (Doctoral Dissertation). Kansas State University. Retrieved from http://hdl.handle.net/2097/40354

Chicago Manual of Style (16^th Edition):

Koehn, Weston. “Novel Hydrogeologic Characterization Methods: Utilizing the Analytic Element Method in Hydrogeophysical Studies.” 2020. Doctoral Dissertation, Kansas State University. Accessed March 01, 2021. http://hdl.handle.net/2097/40354.

MLA Handbook (7^th Edition):

Koehn, Weston. “Novel Hydrogeologic Characterization Methods: Utilizing the Analytic Element Method in Hydrogeophysical Studies.” 2020. Web. 01 Mar 2021.

Vancouver:

Koehn W. Novel Hydrogeologic Characterization Methods: Utilizing the Analytic Element Method in Hydrogeophysical Studies. [Internet] [Doctoral dissertation]. Kansas State University; 2020. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2097/40354.

Council of Science Editors:

Koehn W. Novel Hydrogeologic Characterization Methods: Utilizing the Analytic Element Method in Hydrogeophysical Studies. [Doctoral Dissertation]. Kansas State University; 2020. Available from: http://hdl.handle.net/2097/40354

University of British Columbia

23. Pappas, Sheena Charmaine. An assessment of historical changes in aquatic biota, water and sediment quality within a catchment at a developing urban front.

Degree: MS- MSc, Resource Management and Environmental Studies, 2008, University of British Columbia

URL: http://hdl.handle.net/2429/1716

► Degradation of streams in urban-rural fringe regions occurs through complex interactions between hydrological, physical, chemical and biological mechanisms of the stream environment and surrounding landscape.… (more)

▼ Degradation of streams in urban-rural fringe regions occurs through complex interactions between hydrological, physical, chemical and biological mechanisms of the stream environment and surrounding landscape. Biological monitoring using macroinvertebrates may capture the complex and cumulative influences of land activity on the stream environment. The Salmon River catchment in the township of Langley, British Columbia, Canada straddles urban and rural environments in the Lower Fraser Valley. To date the Salmon River catchment has been subject to several environmental surveys. Following these earlier investigations, this study quantified relationships between the stream environment and changing land activity, across multiple scales, from 1975 to 2005, using macroinvertebrates as environmental integrators. Current and historical water, sediment, and macroinvertebrate information along with land use and land-cover evaluations were used to quantify relationships between the macroinvertebrate community and land activity in the catchment. Spatial and seasonal results for specific conductivity (a total dissolved ion indicator) and NO₃⁻-N and PO₄³ (nutrient indicators) traced groundwater and overland inputs to the stream environment. Nitrate guideline exceedances occurred at groundwater-influenced sites. Elevated sediment trace metal concentrations and Zn guideline exceedances occurred mid-reach in the catchment. Peak total macroinvertebrate and sensitive taxa abundance occurred mid-reach in the catchment in 2005, while richness and proportional sensitive abundance peaks were seen at groundwater-influenced sites. The dominance of tolerant to moderately pollution tolerant taxa occurred throughout. Despite historical water quality concerns at groundwater-influenced sites, greater shifts in community composition occurred in headwaters regions. Patterns of land use and land cover changed in sensitive areas (i.e. above aquifer and in the headwaters). A greater number of correlations between land activity and macroinvertebrate measures occurred at streams sites with 100 m buffers. The abundance of sensitive taxa positively correlated with the amount of agricultural land use, while rarefaction declined. Several Macroinvertebrate functional feeding groups correlated positively to forest cover, while sensitive taxa abundance and Zn concentrations declined. Results suggest continued water quality and sediment trace metal concerns, while macroinvertebrate results point to nutrient enrichment and greater historical variability in headwaters regions. Agricultural activity appears to have a stronger influence on aspects of the stream environment despite the presence of urban-rural land activity.

Subjects/Keywords: Groundwater

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APA (6^th Edition):

Pappas, S. C. (2008). An assessment of historical changes in aquatic biota, water and sediment quality within a catchment at a developing urban front. (Masters Thesis). University of British Columbia. Retrieved from http://hdl.handle.net/2429/1716

Chicago Manual of Style (16^th Edition):

Pappas, Sheena Charmaine. “An assessment of historical changes in aquatic biota, water and sediment quality within a catchment at a developing urban front.” 2008. Masters Thesis, University of British Columbia. Accessed March 01, 2021. http://hdl.handle.net/2429/1716.

MLA Handbook (7^th Edition):

Pappas, Sheena Charmaine. “An assessment of historical changes in aquatic biota, water and sediment quality within a catchment at a developing urban front.” 2008. Web. 01 Mar 2021.

Vancouver:

Pappas SC. An assessment of historical changes in aquatic biota, water and sediment quality within a catchment at a developing urban front. [Internet] [Masters thesis]. University of British Columbia; 2008. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2429/1716.

Council of Science Editors:

Pappas SC. An assessment of historical changes in aquatic biota, water and sediment quality within a catchment at a developing urban front. [Masters Thesis]. University of British Columbia; 2008. Available from: http://hdl.handle.net/2429/1716

Michigan State University

24. Deutsch, Morris, 1925-. Ground-water contamination and legal controls in Michigan.

Degree: MS, 1960, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:15267

Subjects/Keywords: Groundwater

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APA (6^th Edition):

Deutsch, Morris, 1. (1960). Ground-water contamination and legal controls in Michigan. (Masters Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:15267

Chicago Manual of Style (16^th Edition):

Deutsch, Morris, 1925-. “Ground-water contamination and legal controls in Michigan.” 1960. Masters Thesis, Michigan State University. Accessed March 01, 2021. http://etd.lib.msu.edu/islandora/object/etd:15267.

MLA Handbook (7^th Edition):

Deutsch, Morris, 1925-. “Ground-water contamination and legal controls in Michigan.” 1960. Web. 01 Mar 2021.

Vancouver:

Deutsch, Morris 1. Ground-water contamination and legal controls in Michigan. [Internet] [Masters thesis]. Michigan State University; 1960. [cited 2021 Mar 01]. Available from: http://etd.lib.msu.edu/islandora/object/etd:15267.

Council of Science Editors:

Deutsch, Morris 1. Ground-water contamination and legal controls in Michigan. [Masters Thesis]. Michigan State University; 1960. Available from: http://etd.lib.msu.edu/islandora/object/etd:15267

Michigan State University

25. Reagan, Jeffrey Fuehrer. Defining parameters in gravity explorations for groundwater.

Degree: MS, Dept. of Geology, 1974, Michigan State University

URL: http://etd.lib.msu.edu/islandora/object/etd:15302

Subjects/Keywords: Groundwater

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APA (6^th Edition):

Reagan, J. F. (1974). Defining parameters in gravity explorations for groundwater. (Masters Thesis). Michigan State University. Retrieved from http://etd.lib.msu.edu/islandora/object/etd:15302

Chicago Manual of Style (16^th Edition):

Reagan, Jeffrey Fuehrer. “Defining parameters in gravity explorations for groundwater.” 1974. Masters Thesis, Michigan State University. Accessed March 01, 2021. http://etd.lib.msu.edu/islandora/object/etd:15302.

MLA Handbook (7^th Edition):

Reagan, Jeffrey Fuehrer. “Defining parameters in gravity explorations for groundwater.” 1974. Web. 01 Mar 2021.

Vancouver:

Reagan JF. Defining parameters in gravity explorations for groundwater. [Internet] [Masters thesis]. Michigan State University; 1974. [cited 2021 Mar 01]. Available from: http://etd.lib.msu.edu/islandora/object/etd:15302.

Council of Science Editors:

Reagan JF. Defining parameters in gravity explorations for groundwater. [Masters Thesis]. Michigan State University; 1974. Available from: http://etd.lib.msu.edu/islandora/object/etd:15302

University of Waterloo

26. Ning, Zeren. Comparison of Hydraulic Tomography Survey with and without Cut-off Walls at the Narashino Site, Japan.

Degree: 2021, University of Waterloo

URL: http://hdl.handle.net/10012/16630

► This study investigates the performance of several different conceptualizations of inverse modeling including the effective parameter, geological zonation and geostatistical inversion approaches, on characterizing the… (more)

Subjects/Keywords: groundwater modeling

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APA (6^th Edition):

Ning, Z. (2021). Comparison of Hydraulic Tomography Survey with and without Cut-off Walls at the Narashino Site, Japan. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/16630

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):

Ning, Zeren. “Comparison of Hydraulic Tomography Survey with and without Cut-off Walls at the Narashino Site, Japan.” 2021. Thesis, University of Waterloo. Accessed March 01, 2021. http://hdl.handle.net/10012/16630.

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

MLA Handbook (7^th Edition):

Ning, Zeren. “Comparison of Hydraulic Tomography Survey with and without Cut-off Walls at the Narashino Site, Japan.” 2021. Web. 01 Mar 2021.

Vancouver:

Ning Z. Comparison of Hydraulic Tomography Survey with and without Cut-off Walls at the Narashino Site, Japan. [Internet] [Thesis]. University of Waterloo; 2021. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10012/16630.

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

Council of Science Editors:

Ning Z. Comparison of Hydraulic Tomography Survey with and without Cut-off Walls at the Narashino Site, Japan. [Thesis]. University of Waterloo; 2021. Available from: http://hdl.handle.net/10012/16630

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

Texas A&M University

27. Moore, Connor Trent. Impact of Source Zone and Pumping Well Orientation on Dissolved Contaminant Dilution Factor.

Degree: MS, Geology, 2017, Texas A&M University

URL: http://hdl.handle.net/1969.1/161626

► Capture zone delineation is a simple analytical tool that has been employed in many aspects of hydrological sciences throughout recent history. While using capture zone… (more)

▼ Capture zone delineation is a simple analytical tool that has been employed in many aspects of hydrological sciences throughout recent history. While using capture zone remediation techniques, the dilution of the source contaminant is closely examined and monitored. The dilution factor is the ratio of the contaminant concentration in the pumped water over the contaminant source concentration (assumed to be constant) in a pump-and-treat setup. It is important because it provides critical information about the fluid dynamics within the aquifer, and shows how much the source has been diluted within the aquifer. The objective of this thesis is to investigate how changing the source geometry and orientation impacts the dilution factor. The scenario includes an arbitrary line-source length and orientation, fully vertically penetrating well in a homogeneous, horizontally isotropic, confined aquifer. The experiment is set under steady-state conditions. Two analytical models are performed, the first dealing with three subcases consisting of constant source concentrations (cases 1-3), and the second dealing with three subcases cases involving time-dependent source concentrations (cases 4-6). The integrals associated with cases 4- 6 are solved in MATLAB using Gaussian quadrature and Gaussian Kronrod integration methods and demonstrate how each of these source types impacts the dilution factor calculation. After analyzing the results for the first analytical model, the overall conclusion is that the distance between the pumping well and the source is the dominant variable for increasing or decreasing the dilution factor. The source angle and source length also have an impact on the dilution factor. As these values decrease, so do the dilution factor values. The MATLAB model shows differing trends for both of the integration methods (Gaussian quadrature and Gaussian Kronrod) and the source types influence the dilution factor. The finite source decreases rapidly as the last of the source reaches the well, and then slowly flattens out until there is no longer a concentration in the system. The radioactive source and the Gaussian type source decrease with increasing time measurements. The models can be retrofitted for other source types and different variables to fit differing scenarios. Overall, the results will help with planning for future remediation projects, and these models allow for an initial screening test to be done before more robust, time intensive and expensive models can be put into place. Advisors/Committee Members: Zhan, Hongbin (advisor), Knappett, Peter (committee member), Sparks, David (committee member).

Subjects/Keywords: Capture Zones; Groundwater Contamination; Groundwater Remediation

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APA (6^th Edition):

Moore, C. T. (2017). Impact of Source Zone and Pumping Well Orientation on Dissolved Contaminant Dilution Factor. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/161626

Chicago Manual of Style (16^th Edition):

Moore, Connor Trent. “Impact of Source Zone and Pumping Well Orientation on Dissolved Contaminant Dilution Factor.” 2017. Masters Thesis, Texas A&M University. Accessed March 01, 2021. http://hdl.handle.net/1969.1/161626.

MLA Handbook (7^th Edition):

Moore, Connor Trent. “Impact of Source Zone and Pumping Well Orientation on Dissolved Contaminant Dilution Factor.” 2017. Web. 01 Mar 2021.

Vancouver:

Moore CT. Impact of Source Zone and Pumping Well Orientation on Dissolved Contaminant Dilution Factor. [Internet] [Masters thesis]. Texas A&M University; 2017. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1969.1/161626.

Council of Science Editors:

Moore CT. Impact of Source Zone and Pumping Well Orientation on Dissolved Contaminant Dilution Factor. [Masters Thesis]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/161626

University of Johannesburg

28. Mwamba, Olivier. Investigating the toxicity of Dense Non-aqueous Phase Liquids (DNAPL) in contaminated groundwater.

Degree: 2009, University of Johannesburg

URL: http://hdl.handle.net/10210/2698

►

M.Tech. Biomedical Technology

Previous studies have reported on the potential health risks associated with direct contact with chemicals (such as DNAPLs) via inhalation or drinking… (more)

Subjects/Keywords: groundwater pollution; health aspects; groundwater quality measurement

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APA (6^th Edition):

Mwamba, O. (2009). Investigating the toxicity of Dense Non-aqueous Phase Liquids (DNAPL) in contaminated groundwater. (Thesis). University of Johannesburg. Retrieved from http://hdl.handle.net/10210/2698

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):

Mwamba, Olivier. “Investigating the toxicity of Dense Non-aqueous Phase Liquids (DNAPL) in contaminated groundwater.” 2009. Thesis, University of Johannesburg. Accessed March 01, 2021. http://hdl.handle.net/10210/2698.

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

MLA Handbook (7^th Edition):

Mwamba, Olivier. “Investigating the toxicity of Dense Non-aqueous Phase Liquids (DNAPL) in contaminated groundwater.” 2009. Web. 01 Mar 2021.

Vancouver:

Mwamba O. Investigating the toxicity of Dense Non-aqueous Phase Liquids (DNAPL) in contaminated groundwater. [Internet] [Thesis]. University of Johannesburg; 2009. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10210/2698.

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

Council of Science Editors:

Mwamba O. Investigating the toxicity of Dense Non-aqueous Phase Liquids (DNAPL) in contaminated groundwater. [Thesis]. University of Johannesburg; 2009. Available from: http://hdl.handle.net/10210/2698

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

29. Sleeper, Silas. A Geochemical Assessment of Potential Groundwater Storage Locations within the Yakima River Basin.

Degree: MS, Geological Sciences, 2020, Central Washington University

URL: https://digitalcommons.cwu.edu/etd/1372

► Currently in the Yakima River Basin more people possess surface water rights than there is available surface water. As a result, the local community… (more)

Subjects/Keywords: Groundwater; Stable Isotopes; Groundwater Storage; Hydrogeology; Hydrology

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APA (6^th Edition):

Sleeper, S. (2020). A Geochemical Assessment of Potential Groundwater Storage Locations within the Yakima River Basin. (Masters Thesis). Central Washington University. Retrieved from https://digitalcommons.cwu.edu/etd/1372

Chicago Manual of Style (16^th Edition):

Sleeper, Silas. “A Geochemical Assessment of Potential Groundwater Storage Locations within the Yakima River Basin.” 2020. Masters Thesis, Central Washington University. Accessed March 01, 2021. https://digitalcommons.cwu.edu/etd/1372.

MLA Handbook (7^th Edition):

Sleeper, Silas. “A Geochemical Assessment of Potential Groundwater Storage Locations within the Yakima River Basin.” 2020. Web. 01 Mar 2021.

Vancouver:

Sleeper S. A Geochemical Assessment of Potential Groundwater Storage Locations within the Yakima River Basin. [Internet] [Masters thesis]. Central Washington University; 2020. [cited 2021 Mar 01]. Available from: https://digitalcommons.cwu.edu/etd/1372.

Council of Science Editors:

Sleeper S. A Geochemical Assessment of Potential Groundwater Storage Locations within the Yakima River Basin. [Masters Thesis]. Central Washington University; 2020. Available from: https://digitalcommons.cwu.edu/etd/1372

30. Nambeye, Alice. An assessment of heavy metal contamination of groundwater in George compound of Lusaka.

Degree: 2017, University of Zimbabwe

URL: http://dspace.unza.zm/handle/123456789/5572

► This study investigated groundwater contamination in a suburban area of George Compound located on the outskirts of the city of Lusaka in Zambia. The aim… (more)

▼ This study investigated groundwater contamination in a suburban area of George Compound located on the outskirts of the city of Lusaka in Zambia. The aim was to assess heavy metal contamination of groundwater and the local people’s awareness about the contamination in the study area. The objectives were fivefold; to (i) ascertain the usage of groundwater from wells among residents of George Compound; (ii) determine the concentration of heavy metals (cadmium, chromium, copper, iron and lead) in groundwater of the sampled wells in George Compound; (iii) examine the extent to which industries in close proximity to George Compound contributed to heavy metal contamination; (iv) find out local people’s level of awareness and knowledge about heavy metal contamination of the groundwater; and (v) find out whether or not past sensitisation campaigns have had an impact on the local people’s level of awareness of groundwater contamination in George Compound. A case study design was employed to ensure a detailed understanding of the situation. The data were collected through interviews, questionnaire, field observations and water quality measurements. Purposive and snowball sampling procedures were used in the selection of a sample of 38 respondents. Water sampling in wet and dry seasons was conducted on 14 purposively sampled wells. Respondents included 14 households with wells and 24 households without. Additionally, four (4) key informants were interviewed. Analysis of data revealed that, in the dry season, there were high levels of chromium (Cr) (0.14 mg/l), cadmium (Cd) (0.91 mg/l), and iron (Fe) (1.22 mg/l) as maximum concentrations above the Zambia Bureau of Standards (ZABS) for drinking water. Conversely, lead (Pb) and copper (Cu) concentration were found to be below the ZABS’s permissible limits. For the wet season, parameters found to have concentrations above the ZABS limits were chromium (0.64 mg/l), cadmium (0.32 mg/l), iron (3.11 mg/l), and lead (0.07 mg/l), while copper (Cu) (0.04 mg/l) was below the limit. The sources of these heavy metals were attributed to the manufacturing industries and illegal waste sites. A total of 45 percent of the sampled residents in George Compound were unaware of the groundwater contamination. It is concluded that groundwater in shallow wells in George Compound is contaminated with heavy metals (cadmium, chromium, iron and lead). This calls for regular groundwater quality monitoring by Water Resources Management Authority (WARMA) and Zambia Environmental Management Agency (ZEMA) for evidence to support strict enforcement of compliance by industries on discharge of effluents that meet ZABS standards in order to reduce health risks among residents.

Subjects/Keywords: Groundwater – Polution; Groundwater polution – Heavy meatals – Zambia

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APA (6^th Edition):

Nambeye, A. (2017). An assessment of heavy metal contamination of groundwater in George compound of Lusaka. (Thesis). University of Zimbabwe. Retrieved from http://dspace.unza.zm/handle/123456789/5572

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):

Nambeye, Alice. “An assessment of heavy metal contamination of groundwater in George compound of Lusaka.” 2017. Thesis, University of Zimbabwe. Accessed March 01, 2021. http://dspace.unza.zm/handle/123456789/5572.

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

MLA Handbook (7^th Edition):

Nambeye, Alice. “An assessment of heavy metal contamination of groundwater in George compound of Lusaka.” 2017. Web. 01 Mar 2021.

Vancouver:

Nambeye A. An assessment of heavy metal contamination of groundwater in George compound of Lusaka. [Internet] [Thesis]. University of Zimbabwe; 2017. [cited 2021 Mar 01]. Available from: http://dspace.unza.zm/handle/123456789/5572.

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

Council of Science Editors:

Nambeye A. An assessment of heavy metal contamination of groundwater in George compound of Lusaka. [Thesis]. University of Zimbabwe; 2017. Available from: http://dspace.unza.zm/handle/123456789/5572

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

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Open Access Theses and Dissertations