California Water Science Center

Publications

Filter Total Items: 1,405
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Year Published: 2020

Uptake, metabolism, and elimination of fungicides from coated wheat seeds in Japanese quail (Coturnix japonica)

Pesticides coated to the seed surface potentially pose an ecological risk to granivorous birds that consume incompletely buried or spilled seeds. To assess the toxicokinetics of seeds treated with current-use fungicides, Japanese quail (Coturnix japonica) were orally dosed with commercially coated wheat seeds. Quail were exposed to metalaxyl,...

Gross, Michael S.; Thomas G. Bean; Hladik, Michelle; Rattner, Barnett A.; Kuivila, Kathryn

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Year Published: 2020

Daily stream samples reveal highly complex pesticide occurrence and potential toxicity to aquatic life

Transient, acutely toxic concentrations of pesticides in streams can go undetected by fixed-interval sampling programs. Here we compare temporal patterns in occurrence of current-use pesticides in daily composite samples to those in weekly composite and weekly discrete samples of surface water from 14 small stream sites. Samples were collected...

Norman, Julia E.; Mahler, Barbara; Nowell, Lisa H.; Van Metre, Peter C.; Sandstrom, Mark W.; Corbin, Mark A.; Qian, Yaorong; Pankow, James F.; Luo, Wentai; Fitzgerald, Nicholas B.; Asher, William E.; McWhirter, Kevin J.

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Year Published: 2020

Storage capacity and sedimentation characteristics of the San Antonio Reservoir, California, 2018

The San Antonio Reservoir is a large water storage facility in Alameda County, California, and is a major component of the Hetch Hetchy Regional Water System (RWS). The RWS is a water-supply system owned and operated by the San Francisco Public Utilities Commission (SFPUC) and provides water for about 2.7 million people in the San Francisco, Santa...

Marineau, Mathieu D.; Wright, Scott A.; Lopez, Joan V.
Marineau, M.D., Wright, S.A, and Lopez, J.V., 2020, Storage capacity and sedimentation characteristics of the San Antonio Reservoir, California, 2018: U.S. Geological Survey Scientific Investigations Report 2019–5151, 34 p., https://doi.org/10.3133/sir20195151.

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Year Published: 2020

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...

Levy, Zeno; Fram, Miranda S.; Faulkner, Kirsten; Alpers, Charles N.; Soltero, Evelyn M; Taylor, Kimberly A.

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Year Published: 2020

History and sources of co-occurring pesticides in an abstraction well unravelled by age distributions of depth specific groundwater samples

When groundwater-based drinking water supply becomes contaminated, the timing and source of contamination are obvious questions. However, contaminants often have diffuse sources and different contaminants may have different sources even in a single groundwater well, making these questions complicated to answer. Age dating of groundwater has been...

Jakobsen, Rasmus ; Hinsby, Klaus ; Aamand, Jens ; van der Keur, Peter ; Kidmose, Jacob ; Purtschert, Roland ; Jurgens, Bryant; Sultenfuss, Jurgen ; Albers, Christian N.

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Year Published: 2019

Effects of surface-water use on domestic groundwater availability and quality during drought in the Sierra Nevada foothills, California

BackgroundApproximately 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...

Levy, Zeno F.; Fram, Miranda S.; Taylor, Kimberly A.
Levy, Z.F., Fram, M.S., and Taylor, K.A., 2020, Effects of surface-water use on domestic groundwater availability and quality during drought in the Sierra Nevada foothills, California: U.S. Geological Survey Fact Sheet 2019–3077, 4 p., https://doi.org/10.3133/fs20193077.

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Year Published: 2019

Quantifying erosion rates by using terrestrial laser scanning at Malakoff Diggins State Historic Park, Nevada County, California, 2014–17

The abandoned hydraulic mine pit at Malakoff Diggins near Grass Valley, California, can produce large volumes of eroded sediment transportable by storm runoff. Sediment-laden water discharged from the pit is a major source of heavy metals to Humbug Creek and the South Yuba River. To develop a comprehensive sediment budget for the Malakoff Diggins...

Howle, James F.; Alpers, Charles N.; Ward, Alfred J.; Bond, Sandra; Curtis, Jennifer A.
Howle, J.F., Alpers, C.N., Ward, A.J., Bond, S., and Curtis, J.A., 2019, Quantifying erosion rates by using terrestrial laser scanning at Malakoff Diggins State Historic Park, Nevada County, California, 2014–17: U.S. Geological Survey Open-File Report 2019–1124, 39 p., https://doi.org/10.3133/ofr20191124.

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Year Published: 2019

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...

Fram, Miranda S.; Stork, Sylvia V.
Fram, M.S., and Stork, S.V., 2019, 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: U.S. Geological Survey Scientific Investigations Report 2019–5107, 129 p., https://doi.org/10.3133/sir20195107.

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Year Published: 2019

Exposure and potential effects of pesticides and pharmaceuticals in protected streams of the US National Park Service southeast Region

Globally protected areas offer refugia for a broad range of taxa including threatened and endangered species. The United States National Park Service (NPS) manages public lands to preserve biodiversity, but increasing park visitation and development of surrounding landscapes increase exposure to and effects from bioactive contaminants. The risk (...

Bradley, Paul; Romanok, Kristin; Duncan, Jeffrey R.; Battaglin, William; Clark, Jimmy; Hladik, Michelle; Huffman, Bradley; Iwanowicz, Luke; Journey, Celeste; Smalling, Kelly

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Year Published: 2019

Pesticide Mixtures in the Sacramento–San Joaquin Delta, 2016–17: Results from Year 2 of the Delta Regional Monitoring Program

The Delta Regional Monitoring Program was developed by the Central Valley Regional Water Quality Control Board in response to the decline of pelagic fish species in the Sacramento–San Joaquin Delta that was observed in the early 2000s. The U.S. Geological Survey, in cooperation with the Delta Regional Monitoring Program, has been responsible for...

De Parsia, Matthew; Woodward, Emily E.; Orlando, James L.; Hladik, Michelle L.
De Parsia, M., Woodward, E.E., Orlando, J.L., and Hladik, M.L., 2019, Pesticide mixtures in the Sacramento–San Joaquin Delta, 2016–17: Results from year 2 of the Delta Regional Monitoring Program: U.S. Geological Survey Data Series 1120, 33 p., https://doi.org/10.3133/ds1120.

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Year Published: 2019

Observations of the spawning ecology of the imperiled Clear Lake Hitch Lavinia exilicauda chi

Migrations for the purposes of reproduction are widely documented across the animal kingdom and are particularly common in fishes and other aquatic organisms (Dingle 2014). One important migration strategy in fishes is potamodromy, which is the movement from one location to another entirely within freshwater (Morais and Daverat 2016). Thurow (...

Feyrer, Frederick
Feyrer, F, 2019, Observations of the spawning ecology of the imperiled Clear Lake Hitch Lavinia exilicauda chi: California Fish and Game

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Year Published: 2019

Review of and recommendations for monitoring contaminants and their effects in the San Francisco Bay−Delta

Legacy and current-use contaminants enter into and accumulate throughout the San Francisco Bay−Delta (Bay−Delta), and are present at concentrations with known effects on species important to this diverse watershed. There remains major uncertainty and a lack of focused research able to address and provide understanding of effects across multiple...

Connon, Richard E; Hasenbein, Simone; Brander, Susanne M.; Poynton, Helen C.; Holland, Erika B; Schlenk, Daniel; Orlando, James; Hladik, Michelle; Collier, Tracy K.; Scholz, Nathaniel L; Incardona, John P; Denslow, Nancy D.; Hamdoun, Amro; Nicklisch, Sascha; Garcia-Reyero, Natalia; Perkins, Edward J.; Gallagher, Evan P; Deng, Xin; Wang, Dan; Fong, Stephanie; Breuer, Richard S; Hajibabei, Mehrdad; Brown, James B; Colbourne, John K; Young, Thomas M; Cherr, Gary; Whitehead, Andrew; Todgham, Anne E.