Miranda Fram
Miranda Fram is a Program Chief, Statewide and National Water Quality Assessments at the California Water Science Center.
Science and Products
Filter Total Items: 81
Effects of montane watershed development on vulnerability of domestic groundwater supply during drought Effects of montane watershed development on vulnerability of domestic groundwater supply during drought
Climate change is expected to reduce recharge to montane aquifers in the western United States, but it is unclear how this will impact groundwater resources in watersheds where intensive surface-water development has disrupted the natural hydrologic regime. To better understand sources of recharge and associated vulnerabilities of groundwater supply in this setting, we made a detailed...
Authors
Zeno Levy, Miranda S. Fram, Kirsten Faulkner, Charles N. Alpers, Evelyn M Soltero, Kimberly A. Taylor
Determination of study reporting limits for pesticide constituent data for the California Groundwater Ambient Monitoring and Assessment Program Priority Basin Project, 2004–2018—Part 1: National Water Quality Schedules 2003, 2032, or 2033, and 2060 Determination of study reporting limits for pesticide constituent data for the California Groundwater Ambient Monitoring and Assessment Program Priority Basin Project, 2004–2018—Part 1: National Water Quality Schedules 2003, 2032, or 2033, and 2060
The California Groundwater Ambient Monitoring and Assessment Program Priority Basin Project (GAMA-PBP) is a long-term cooperative project designed to assess the quality of groundwater resources used for public and domestic drinking water supplies in the State of California, to monitor and evaluate changes to that quality, to investigate the human and natural factors controlling water...
Authors
Miranda S. Fram, Sylvia V. Stork
Anthropogenic and geologic causes of anomalously high uranium concentrations in groundwater used for drinking water supply in the southeastern San Joaquin Valley, CA Anthropogenic and geologic causes of anomalously high uranium concentrations in groundwater used for drinking water supply in the southeastern San Joaquin Valley, CA
Concentrations of uranium (U) >30 µg/L in groundwater are relatively uncommon in drinking water in the United States but can be of concern in those areas where complex interactions of aquifer materials and anthropogenic alterations of the natural flow regime mobilize uranium. High concentrations (>30 µg/L) of U in the southeastern San Joaquin Valley, California, USA, have been detected...
Authors
Michael R. Rosen, Karen R. Burow, Miranda Fram
Delineation of spatial extent, depth, thickness, and potential volume of aquifers used for domestic and public water-supply in the Central Valley, California Delineation of spatial extent, depth, thickness, and potential volume of aquifers used for domestic and public water-supply in the Central Valley, California
Identification of the groundwater resources used for drinking-water supplies is essential for the design of strategies to manage those resources. In this study, the spatial extent, depths, thicknesses, and volumes of groundwater aquifers used for domestic and public drinking-water supply were estimated from locations and well-construction data from 11,725 domestic-supply wells and 2,376...
Authors
Stefan Voss, Bryant C. Jurgens, Miranda S. Fram, George L. V Bennett
Effects of surface-water use on domestic groundwater availability and quality during drought in the Sierra Nevada foothills, California Effects of surface-water use on domestic groundwater availability and quality during drought in the Sierra Nevada foothills, California
Background Approximately 2 million California residents rely on privately owned domestic wells for drinking water. During the California drought of 2012−16 groundwater levels declined in many parts of the state and wells were deepened in response. Most of the wells deepened during this time were domestic wells that were drilled into fractured bedrock throughout the Sierra Nevada...
Authors
Zeno F. Levy, Miranda S. Fram, Kimberly A. Taylor
Metrics for assessing the quality of groundwater used for public supply, CA, USA: Equivalent-population and area Metrics for assessing the quality of groundwater used for public supply, CA, USA: Equivalent-population and area
Data from 11 000 public supply wells in 87 study areas were used to assess the quality of nearly all of the groundwater used for public supply in California. Two metrics were developed for quantifying groundwater quality: area with high concentrations (km2 or proportion) and equivalent-population relying upon groundwater with high concentrations (number of people or proportion)...
Authors
Kenneth Belitz, Miranda S. Fram, Tyler D. Johnson
Science and Products
Filter Total Items: 81
Effects of montane watershed development on vulnerability of domestic groundwater supply during drought Effects of montane watershed development on vulnerability of domestic groundwater supply during drought
Climate change is expected to reduce recharge to montane aquifers in the western United States, but it is unclear how this will impact groundwater resources in watersheds where intensive surface-water development has disrupted the natural hydrologic regime. To better understand sources of recharge and associated vulnerabilities of groundwater supply in this setting, we made a detailed...
Authors
Zeno Levy, Miranda S. Fram, Kirsten Faulkner, Charles N. Alpers, Evelyn M Soltero, Kimberly A. Taylor
Determination of study reporting limits for pesticide constituent data for the California Groundwater Ambient Monitoring and Assessment Program Priority Basin Project, 2004–2018—Part 1: National Water Quality Schedules 2003, 2032, or 2033, and 2060 Determination of study reporting limits for pesticide constituent data for the California Groundwater Ambient Monitoring and Assessment Program Priority Basin Project, 2004–2018—Part 1: National Water Quality Schedules 2003, 2032, or 2033, and 2060
The California Groundwater Ambient Monitoring and Assessment Program Priority Basin Project (GAMA-PBP) is a long-term cooperative project designed to assess the quality of groundwater resources used for public and domestic drinking water supplies in the State of California, to monitor and evaluate changes to that quality, to investigate the human and natural factors controlling water...
Authors
Miranda S. Fram, Sylvia V. Stork
Anthropogenic and geologic causes of anomalously high uranium concentrations in groundwater used for drinking water supply in the southeastern San Joaquin Valley, CA Anthropogenic and geologic causes of anomalously high uranium concentrations in groundwater used for drinking water supply in the southeastern San Joaquin Valley, CA
Concentrations of uranium (U) >30 µg/L in groundwater are relatively uncommon in drinking water in the United States but can be of concern in those areas where complex interactions of aquifer materials and anthropogenic alterations of the natural flow regime mobilize uranium. High concentrations (>30 µg/L) of U in the southeastern San Joaquin Valley, California, USA, have been detected...
Authors
Michael R. Rosen, Karen R. Burow, Miranda Fram
Delineation of spatial extent, depth, thickness, and potential volume of aquifers used for domestic and public water-supply in the Central Valley, California Delineation of spatial extent, depth, thickness, and potential volume of aquifers used for domestic and public water-supply in the Central Valley, California
Identification of the groundwater resources used for drinking-water supplies is essential for the design of strategies to manage those resources. In this study, the spatial extent, depths, thicknesses, and volumes of groundwater aquifers used for domestic and public drinking-water supply were estimated from locations and well-construction data from 11,725 domestic-supply wells and 2,376...
Authors
Stefan Voss, Bryant C. Jurgens, Miranda S. Fram, George L. V Bennett
Effects of surface-water use on domestic groundwater availability and quality during drought in the Sierra Nevada foothills, California Effects of surface-water use on domestic groundwater availability and quality during drought in the Sierra Nevada foothills, California
Background Approximately 2 million California residents rely on privately owned domestic wells for drinking water. During the California drought of 2012−16 groundwater levels declined in many parts of the state and wells were deepened in response. Most of the wells deepened during this time were domestic wells that were drilled into fractured bedrock throughout the Sierra Nevada...
Authors
Zeno F. Levy, Miranda S. Fram, Kimberly A. Taylor
Metrics for assessing the quality of groundwater used for public supply, CA, USA: Equivalent-population and area Metrics for assessing the quality of groundwater used for public supply, CA, USA: Equivalent-population and area
Data from 11 000 public supply wells in 87 study areas were used to assess the quality of nearly all of the groundwater used for public supply in California. Two metrics were developed for quantifying groundwater quality: area with high concentrations (km2 or proportion) and equivalent-population relying upon groundwater with high concentrations (number of people or proportion)...
Authors
Kenneth Belitz, Miranda S. Fram, Tyler D. Johnson