Skip to main content
U.S. flag

An official website of the United States government

Angela Paul

Angela Paul is a Hydrologist and the Water-Quality Specialist for the Nevada Water Science Center.

Science and Products

Filter Total Items: 13

Long-term mercury loading and trapping dynamics in a Western North America reservoir

Study RegionThe Carson River including Lahontan Reservoir in Northwestern Nevada, USAStudy FocusThe discovery, mining, and processing of silver and gold from the Comstock Lode in northwestern Nevada heavily contaminated the Carson River system with mercury (Hg). The river now contains some of the highest recorded water column and bed sediment Hg concentrations reported in peer-reviewed literature.
Authors
Eric D. Morway, Robert M. Hirsch, Angela Paul, Mark C. Marvin-DiPasquale, Carl E Thodal
By
Water Resources Mission Area, Nevada Water Science Center

Water and sediment chemistry of selected existing and potential habitats of the Mohave tui chub, Mojave National Preserve, California, 2018

The Mohave tui chub (Siphateles bicolor mohavensis) was nearly extirpated from the Mojave River drainage in California by the mid-twentieth century and was listed as endangered in 1970. A source population of Mohave tui chub exists at MC Spring in Zzyzx, California, and has been used for several re-establishment efforts in previous decades. Two potential habitats in the Mojave National Preserve wi
Authors
Katherine J. Earp, Angela P. Paul
By
Water Resources Mission Area, Nevada Water Science Center

Brackish groundwater and its potential as a resource in the southwestern United States

Secure, reliable, and sustainable water resources are fundamental to food production, energy independence, and the health of humans and ecosystems. But the large-scale development of fresh groundwater resources has stressed aquifers in some areas, causing declines in the amount of groundwater in storage and decreases in discharge to surface-water bodies like rivers and springs (Reilly and others,
Authors
David W. Anning, Kimberly R. Beisner, Angela P. Paul, Jennifer S. Stanton, Susan A. Thiros
By
Water Resources Mission Area, Arizona Water Science Center

Discharge, sediment, and water chemistry in Clear Creek, western Nevada, water years 2013–16

Clear Creek is a small stream that drains the eastern Carson Range near Lake Tahoe, flows roughly parallel to the Highway 50 corridor, and discharges to the Carson River near Carson City, Nevada. Historical and ongoing development in the drainage basin is thought to be affecting Clear Creek and its sediment-transport characteristics. Previous studies from water years (WYs) 2004 to 2007 and from 20
Authors
Jena M. Huntington, Daniel J. Riddle, Angela P. Paul
By
Water Resources Mission Area, Nevada Water Science Center, Wildland Fire Science

Potential sources of analytical bias and error in selected trace element data-quality analyses

Potential sources of analytical bias and error associated with laboratory analyses for selected trace elements where concentrations were greater in filtered samples than in paired unfiltered samples were evaluated by U.S. Geological Survey (USGS) Water Quality Specialists in collaboration with the USGS National Water Quality Laboratory (NWQL) and the Branch of Quality Systems (BQS).Causes for trac
Authors
Angela P. Paul, John R. Garbarino, Lisa D. Olsen, Michael R. Rosen, Christopher A. Mebane, Tedmund M. Struzeski

The quality of our Nation's waters: Water quality in basin-fill aquifers of the southwestern United States: Arizona, California, Colorado, Nevada, New Mexico, and Utah, 1993-2009

The Southwest Principal Aquifers consist of many basin-fill aquifers in California, Nevada, Utah, Arizona, New Mexico, and Colorado. Demands for irrigation and drinking water have substantially increased groundwater withdrawals and irrigation return flow to some of these aquifers. These changes have increased the movement of contaminants from geologic and human sources to depths used to supply dri
Authors
Susan A. Thiros, Angela P. Paul, Laura M. Bexfield, David W. Anning
By
Water Resources Mission Area, Utah Water Science Center

Preliminary geochemical assessment of water in selected streams, springs, and caves in the Upper Baker and Snake Creek drainages in Great Basin National Park, Nevada, 2009

Water in caves, discharging from springs, and flowing in streams in the upper Baker and Snake Creek drainages are important natural resources in Great Basin National Park, Nevada. Water and rock samples were collected from 15 sites during February 2009 as part of a series of investigations evaluating the potential for water resource depletion in the park resulting from the current and proposed gro
Authors
Angela P. Paul, Carl E. Thodal, Gretchen M. Baker, Michael S. Lico, David E. Prudic
By
Water Resources Mission Area, Nevada Water Science Center

Predicted nitrate and arsenic concentrations in basin-fill aquifers of the Southwestern United States

The National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey (USGS) is conducting a regional analysis of water quality in the principal aquifer systems across the United States. The Southwest Principal Aquifers (SWPA) study is building a better understanding of the susceptibility and vulnerability of basin-fill aquifers in the region to groundwater contamination by synthesiz
Authors
David W. Anning, Angela P. Paul, Tim S. McKinney, Jena M. Huntington, Laura M. Bexfield, Susan A. Thiros
By
Water Resources Mission Area, New Mexico Water Science Center, Utah Water Science Center, Nevada Water Science Center, Arizona Water Science Center

The occurrence of trace elements in bed sediment collected from areas of varying land use and potential effects on stream macroinvertebrates in the conterminous western United States, Alaska, and Hawaii, 1992-2000

As part of the National Water-Quality Assessment Program of the U.S. Geological Survey, this study examines the occurrence of nine trace elements in bed sediment of varying mineralogy and land use and assesses the possible effects of these trace elements on aquatic-macroinvertebrate community structure. Samples of bed sediment and macroinvertebrates were collected from 154 streams at sites represe
Authors
Angela P. Paul, Nicholas V. Paretti, Dorene E. MacCoy, Anne M.D. Brasher
By
Water Resources Mission Area, Nevada Water Science Center, Arizona Water Science Center, Idaho Water Science Center, Utah Water Science Center

In-situ arsenic remediation in Carson Valley, Douglas County, west-central Nevada

Conventional arsenic remediation strategies primarily involve above-ground treatment that include costs involved in the disposal of sludge material. The primary advantages of in-situ remediation are that building and maintaining a large treatment facility are not necessary and that costs associated with the disposal of sludge are eliminated. A two-phase study was implemented to address the feasibi
Authors
Angela P. Paul, Douglas K. Maurer, Kenneth G. Stollenwerk, Alan H. Welch
By
Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program, Nevada Water Science Center

Analysis of Streamflow Trends, Ground-Water and Surface-Water Interactions, and Water Quality in the Upper Carson River Basin, Nevada and California

Changes in land and water use and increasing development of water resources in the Carson River basin may affect flow of the river and, in turn, affect downstream water users dependent on sustained river flows to Lahontan Reservoir. To address these concerns, the U.S. Geological Survey, in cooperation with the U.S. Fish and Wildlife Service, Churchill County, and the Truckee-Carson Irrigation Dist
Authors
Douglas K. Maurer, Angela P. Paul, David L. Berger, C. Justin Mayers
By
Water Resources Mission Area, Nevada Water Science Center

Effects of agriculture and urbanization on quality of shallow ground water in the arid to semiarid western United States, 1993-2004

Within the Western United States, agricultural and rural lands are being developed into commercial and residential areas. With changes in land use and increasing population, greater demands are placed on water resources for agricultural, industrial, and domestic supplies. Many areas in the Western United States rely exclusively on ground water as their source of drinking water. Areas that use surf
Authors
Angela P. Paul, Ralph L. Seiler, Timothy G. Rowe, Michael R. Rosen
By
Water Resources Mission Area, Nevada Water Science Center, Utah Water Science Center
link
Screenshot of the NWIS Mapper showing location of sites

Arsenic in Nevada Groundwater

From 2007 to 2021, the U.S. Geological Survey (USGS) collaborated with the Nevada Bureau of Mines and Geology on evaluating the forms of arsenic in Nevada groundwater resources. A total of 190 groundwater samples were collected from wells and springs throughout Nevada. Concentrations of arsenic ranged from <1.6 to 2,408 micrograms per liter (µg/L); in most cases, arsenate was the dominant species...
By
Nevada Water Science Center
link

Arsenic in Nevada Groundwater

From 2007 to 2021, the U.S. Geological Survey (USGS) collaborated with the Nevada Bureau of Mines and Geology on evaluating the forms of arsenic in Nevada groundwater resources. A total of 190 groundwater samples were collected from wells and springs throughout Nevada. Concentrations of arsenic ranged from <1.6 to 2,408 micrograms per liter (µg/L); in most cases, arsenate was the dominant species...
Learn More
link
Carson Valley, Nevada

Collection of arsenic and associated geochemical data important to occurrence and mobility of arsenic in groundwater used for public supply in southern Carson Valley, Douglas County, Nevada

The Nevada Water Science Center (NVWSC) is increasing the spatial understanding of the distribution of arsenic and important geochemical information in groundwater resources near select water-supply wells in southern Carson Valley by collecting groundwater samples to complement the existing dataset (2006 – 2015).
By
Nevada Water Science Center
link

Collection of arsenic and associated geochemical data important to occurrence and mobility of arsenic in groundwater used for public supply in southern Carson Valley, Douglas County, Nevada

The Nevada Water Science Center (NVWSC) is increasing the spatial understanding of the distribution of arsenic and important geochemical information in groundwater resources near select water-supply wells in southern Carson Valley by collecting groundwater samples to complement the existing dataset (2006 – 2015).
Learn More
link
Carson River, Nev.

Science in the Carson River Basin

The Carson River is an important water resource for residents, agriculture, and wildlife. At the headwaters, precipitation assnow and rain can produce runoff that is unregulated until it reaches Lahontan reservoir. Water flowing in the mainstem may be diverted in Carson Valley for agriculture and for municipal water uses. At Lahontan Reservoir, water imported from the Truckee River Basin is used...
By
Nevada Water Science Center
link

Science in the Carson River Basin

The Carson River is an important water resource for residents, agriculture, and wildlife. At the headwaters, precipitation assnow and rain can produce runoff that is unregulated until it reaches Lahontan reservoir. Water flowing in the mainstem may be diverted in Carson Valley for agriculture and for municipal water uses. At Lahontan Reservoir, water imported from the Truckee River Basin is used...
Learn More
link
Flowing well in Carson Valley, Nevada

Occurrence and Mobility of Arsenic in Groundwater Used for Public Supply in Southern Carson Valley, Douglas County, Nevada

Over the past 15 years, Douglas County, Nev., has removed production wells in northern Carson Valley from use due to relatively high arsenic concentrations. To maintain the supply of water to the public, the town of Minden has been providing water to Douglas County and Carson City. Due to the projected increases in municipal demand, water resource managers are concerned that increasing pumping...
By
Nevada Water Science Center
link

Occurrence and Mobility of Arsenic in Groundwater Used for Public Supply in Southern Carson Valley, Douglas County, Nevada

Over the past 15 years, Douglas County, Nev., has removed production wells in northern Carson Valley from use due to relatively high arsenic concentrations. To maintain the supply of water to the public, the town of Minden has been providing water to Douglas County and Carson City. Due to the projected increases in municipal demand, water resource managers are concerned that increasing pumping...
Learn More
link
USGS scientist collecting soil samples at the Silver State Solar South Project

Evaluation of the Migration of Palliative Chemicals Used for Dust Abatement, Clark County, Nevada

The USGS Nevada Water Science Center is collaborating with the Bureau of Land Management and PolyAnalyltik Laboratory in Ontario, Canada to evaluate the potential migration of butyl acrylate vinyl acetate (dust palliative) in soil and storm runoff from areas of application in southern Nevada. There is concern regarding the exposure of the desert tortoise and other wildlife to palliative chemicals...
By
Nevada Water Science Center
link

Evaluation of the Migration of Palliative Chemicals Used for Dust Abatement, Clark County, Nevada

The USGS Nevada Water Science Center is collaborating with the Bureau of Land Management and PolyAnalyltik Laboratory in Ontario, Canada to evaluate the potential migration of butyl acrylate vinyl acetate (dust palliative) in soil and storm runoff from areas of application in southern Nevada. There is concern regarding the exposure of the desert tortoise and other wildlife to palliative chemicals...
Learn More

Maps of estimated nitrate and arsenic concentrations in basin-fill aquifers of the southwestern United States

Human-health concerns and economic considerations associated with meeting drinking-water standards motivated a study of the vulnerability of basin-fill aquifers to nitrate contamination and arsenic enrichment in the southwestern United States. Statistical models were developed by using the random forest classifier algorithm to predict concentrations of nitrate and arsenic across a model grid repre
By
Water Resources Mission Area, New Mexico Water Science Center, Arizona Water Science Center, Utah Water Science Center, Nevada Water Science Center

Science and Products

Filter Total Items: 13

Long-term mercury loading and trapping dynamics in a Western North America reservoir

Study RegionThe Carson River including Lahontan Reservoir in Northwestern Nevada, USAStudy FocusThe discovery, mining, and processing of silver and gold from the Comstock Lode in northwestern Nevada heavily contaminated the Carson River system with mercury (Hg). The river now contains some of the highest recorded water column and bed sediment Hg concentrations reported in peer-reviewed literature.
Authors
Eric D. Morway, Robert M. Hirsch, Angela Paul, Mark C. Marvin-DiPasquale, Carl E Thodal
By
Water Resources Mission Area, Nevada Water Science Center

Water and sediment chemistry of selected existing and potential habitats of the Mohave tui chub, Mojave National Preserve, California, 2018

The Mohave tui chub (Siphateles bicolor mohavensis) was nearly extirpated from the Mojave River drainage in California by the mid-twentieth century and was listed as endangered in 1970. A source population of Mohave tui chub exists at MC Spring in Zzyzx, California, and has been used for several re-establishment efforts in previous decades. Two potential habitats in the Mojave National Preserve wi
Authors
Katherine J. Earp, Angela P. Paul
By
Water Resources Mission Area, Nevada Water Science Center

Brackish groundwater and its potential as a resource in the southwestern United States

Secure, reliable, and sustainable water resources are fundamental to food production, energy independence, and the health of humans and ecosystems. But the large-scale development of fresh groundwater resources has stressed aquifers in some areas, causing declines in the amount of groundwater in storage and decreases in discharge to surface-water bodies like rivers and springs (Reilly and others,
Authors
David W. Anning, Kimberly R. Beisner, Angela P. Paul, Jennifer S. Stanton, Susan A. Thiros
By
Water Resources Mission Area, Arizona Water Science Center

Discharge, sediment, and water chemistry in Clear Creek, western Nevada, water years 2013–16

Clear Creek is a small stream that drains the eastern Carson Range near Lake Tahoe, flows roughly parallel to the Highway 50 corridor, and discharges to the Carson River near Carson City, Nevada. Historical and ongoing development in the drainage basin is thought to be affecting Clear Creek and its sediment-transport characteristics. Previous studies from water years (WYs) 2004 to 2007 and from 20
Authors
Jena M. Huntington, Daniel J. Riddle, Angela P. Paul
By
Water Resources Mission Area, Nevada Water Science Center, Wildland Fire Science

Potential sources of analytical bias and error in selected trace element data-quality analyses

Potential sources of analytical bias and error associated with laboratory analyses for selected trace elements where concentrations were greater in filtered samples than in paired unfiltered samples were evaluated by U.S. Geological Survey (USGS) Water Quality Specialists in collaboration with the USGS National Water Quality Laboratory (NWQL) and the Branch of Quality Systems (BQS).Causes for trac
Authors
Angela P. Paul, John R. Garbarino, Lisa D. Olsen, Michael R. Rosen, Christopher A. Mebane, Tedmund M. Struzeski

The quality of our Nation's waters: Water quality in basin-fill aquifers of the southwestern United States: Arizona, California, Colorado, Nevada, New Mexico, and Utah, 1993-2009

The Southwest Principal Aquifers consist of many basin-fill aquifers in California, Nevada, Utah, Arizona, New Mexico, and Colorado. Demands for irrigation and drinking water have substantially increased groundwater withdrawals and irrigation return flow to some of these aquifers. These changes have increased the movement of contaminants from geologic and human sources to depths used to supply dri
Authors
Susan A. Thiros, Angela P. Paul, Laura M. Bexfield, David W. Anning
By
Water Resources Mission Area, Utah Water Science Center

Preliminary geochemical assessment of water in selected streams, springs, and caves in the Upper Baker and Snake Creek drainages in Great Basin National Park, Nevada, 2009

Water in caves, discharging from springs, and flowing in streams in the upper Baker and Snake Creek drainages are important natural resources in Great Basin National Park, Nevada. Water and rock samples were collected from 15 sites during February 2009 as part of a series of investigations evaluating the potential for water resource depletion in the park resulting from the current and proposed gro
Authors
Angela P. Paul, Carl E. Thodal, Gretchen M. Baker, Michael S. Lico, David E. Prudic
By
Water Resources Mission Area, Nevada Water Science Center

Predicted nitrate and arsenic concentrations in basin-fill aquifers of the Southwestern United States

The National Water-Quality Assessment (NAWQA) Program of the U.S. Geological Survey (USGS) is conducting a regional analysis of water quality in the principal aquifer systems across the United States. The Southwest Principal Aquifers (SWPA) study is building a better understanding of the susceptibility and vulnerability of basin-fill aquifers in the region to groundwater contamination by synthesiz
Authors
David W. Anning, Angela P. Paul, Tim S. McKinney, Jena M. Huntington, Laura M. Bexfield, Susan A. Thiros
By
Water Resources Mission Area, New Mexico Water Science Center, Utah Water Science Center, Nevada Water Science Center, Arizona Water Science Center

The occurrence of trace elements in bed sediment collected from areas of varying land use and potential effects on stream macroinvertebrates in the conterminous western United States, Alaska, and Hawaii, 1992-2000

As part of the National Water-Quality Assessment Program of the U.S. Geological Survey, this study examines the occurrence of nine trace elements in bed sediment of varying mineralogy and land use and assesses the possible effects of these trace elements on aquatic-macroinvertebrate community structure. Samples of bed sediment and macroinvertebrates were collected from 154 streams at sites represe
Authors
Angela P. Paul, Nicholas V. Paretti, Dorene E. MacCoy, Anne M.D. Brasher
By
Water Resources Mission Area, Nevada Water Science Center, Arizona Water Science Center, Idaho Water Science Center, Utah Water Science Center

In-situ arsenic remediation in Carson Valley, Douglas County, west-central Nevada

Conventional arsenic remediation strategies primarily involve above-ground treatment that include costs involved in the disposal of sludge material. The primary advantages of in-situ remediation are that building and maintaining a large treatment facility are not necessary and that costs associated with the disposal of sludge are eliminated. A two-phase study was implemented to address the feasibi
Authors
Angela P. Paul, Douglas K. Maurer, Kenneth G. Stollenwerk, Alan H. Welch
By
Water Resources Mission Area, Ecosystems Mission Area, Toxic Substances Hydrology, Environmental Health Program, Nevada Water Science Center

Analysis of Streamflow Trends, Ground-Water and Surface-Water Interactions, and Water Quality in the Upper Carson River Basin, Nevada and California

Changes in land and water use and increasing development of water resources in the Carson River basin may affect flow of the river and, in turn, affect downstream water users dependent on sustained river flows to Lahontan Reservoir. To address these concerns, the U.S. Geological Survey, in cooperation with the U.S. Fish and Wildlife Service, Churchill County, and the Truckee-Carson Irrigation Dist
Authors
Douglas K. Maurer, Angela P. Paul, David L. Berger, C. Justin Mayers
By
Water Resources Mission Area, Nevada Water Science Center

Effects of agriculture and urbanization on quality of shallow ground water in the arid to semiarid western United States, 1993-2004

Within the Western United States, agricultural and rural lands are being developed into commercial and residential areas. With changes in land use and increasing population, greater demands are placed on water resources for agricultural, industrial, and domestic supplies. Many areas in the Western United States rely exclusively on ground water as their source of drinking water. Areas that use surf
Authors
Angela P. Paul, Ralph L. Seiler, Timothy G. Rowe, Michael R. Rosen
By
Water Resources Mission Area, Nevada Water Science Center, Utah Water Science Center
link
Screenshot of the NWIS Mapper showing location of sites

Arsenic in Nevada Groundwater

From 2007 to 2021, the U.S. Geological Survey (USGS) collaborated with the Nevada Bureau of Mines and Geology on evaluating the forms of arsenic in Nevada groundwater resources. A total of 190 groundwater samples were collected from wells and springs throughout Nevada. Concentrations of arsenic ranged from <1.6 to 2,408 micrograms per liter (µg/L); in most cases, arsenate was the dominant species...
By
Nevada Water Science Center
link

Arsenic in Nevada Groundwater

From 2007 to 2021, the U.S. Geological Survey (USGS) collaborated with the Nevada Bureau of Mines and Geology on evaluating the forms of arsenic in Nevada groundwater resources. A total of 190 groundwater samples were collected from wells and springs throughout Nevada. Concentrations of arsenic ranged from <1.6 to 2,408 micrograms per liter (µg/L); in most cases, arsenate was the dominant species...
Learn More
link
Carson Valley, Nevada

Collection of arsenic and associated geochemical data important to occurrence and mobility of arsenic in groundwater used for public supply in southern Carson Valley, Douglas County, Nevada

The Nevada Water Science Center (NVWSC) is increasing the spatial understanding of the distribution of arsenic and important geochemical information in groundwater resources near select water-supply wells in southern Carson Valley by collecting groundwater samples to complement the existing dataset (2006 – 2015).
By
Nevada Water Science Center
link

Collection of arsenic and associated geochemical data important to occurrence and mobility of arsenic in groundwater used for public supply in southern Carson Valley, Douglas County, Nevada

The Nevada Water Science Center (NVWSC) is increasing the spatial understanding of the distribution of arsenic and important geochemical information in groundwater resources near select water-supply wells in southern Carson Valley by collecting groundwater samples to complement the existing dataset (2006 – 2015).
Learn More
link
Carson River, Nev.

Science in the Carson River Basin

The Carson River is an important water resource for residents, agriculture, and wildlife. At the headwaters, precipitation assnow and rain can produce runoff that is unregulated until it reaches Lahontan reservoir. Water flowing in the mainstem may be diverted in Carson Valley for agriculture and for municipal water uses. At Lahontan Reservoir, water imported from the Truckee River Basin is used...
By
Nevada Water Science Center
link

Science in the Carson River Basin

The Carson River is an important water resource for residents, agriculture, and wildlife. At the headwaters, precipitation assnow and rain can produce runoff that is unregulated until it reaches Lahontan reservoir. Water flowing in the mainstem may be diverted in Carson Valley for agriculture and for municipal water uses. At Lahontan Reservoir, water imported from the Truckee River Basin is used...
Learn More
link
Flowing well in Carson Valley, Nevada

Occurrence and Mobility of Arsenic in Groundwater Used for Public Supply in Southern Carson Valley, Douglas County, Nevada

Over the past 15 years, Douglas County, Nev., has removed production wells in northern Carson Valley from use due to relatively high arsenic concentrations. To maintain the supply of water to the public, the town of Minden has been providing water to Douglas County and Carson City. Due to the projected increases in municipal demand, water resource managers are concerned that increasing pumping...
By
Nevada Water Science Center
link

Occurrence and Mobility of Arsenic in Groundwater Used for Public Supply in Southern Carson Valley, Douglas County, Nevada

Over the past 15 years, Douglas County, Nev., has removed production wells in northern Carson Valley from use due to relatively high arsenic concentrations. To maintain the supply of water to the public, the town of Minden has been providing water to Douglas County and Carson City. Due to the projected increases in municipal demand, water resource managers are concerned that increasing pumping...
Learn More
link
USGS scientist collecting soil samples at the Silver State Solar South Project

Evaluation of the Migration of Palliative Chemicals Used for Dust Abatement, Clark County, Nevada

The USGS Nevada Water Science Center is collaborating with the Bureau of Land Management and PolyAnalyltik Laboratory in Ontario, Canada to evaluate the potential migration of butyl acrylate vinyl acetate (dust palliative) in soil and storm runoff from areas of application in southern Nevada. There is concern regarding the exposure of the desert tortoise and other wildlife to palliative chemicals...
By
Nevada Water Science Center
link

Evaluation of the Migration of Palliative Chemicals Used for Dust Abatement, Clark County, Nevada

The USGS Nevada Water Science Center is collaborating with the Bureau of Land Management and PolyAnalyltik Laboratory in Ontario, Canada to evaluate the potential migration of butyl acrylate vinyl acetate (dust palliative) in soil and storm runoff from areas of application in southern Nevada. There is concern regarding the exposure of the desert tortoise and other wildlife to palliative chemicals...
Learn More

Maps of estimated nitrate and arsenic concentrations in basin-fill aquifers of the southwestern United States

Human-health concerns and economic considerations associated with meeting drinking-water standards motivated a study of the vulnerability of basin-fill aquifers to nitrate contamination and arsenic enrichment in the southwestern United States. Statistical models were developed by using the random forest classifier algorithm to predict concentrations of nitrate and arsenic across a model grid repre
By
Water Resources Mission Area, New Mexico Water Science Center, Arizona Water Science Center, Utah Water Science Center, Nevada Water Science Center