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Environmental Health - Toxic Substances

Research Projects

Watershed- and Regional-Scale Contamination

Map of Toxics Program Study Sites
Locations of Toxics Program Watershed- and Regional-Scale Contamination Investigations
(Click on map for larger version)

Discharge of the Roger Road wastewater treatment plant effluent into the Santa Cruz River, AZ, at the start of the study reach (mile 0). Effluent from the plant was collected over a 24-hour period coinciding with low, rising, peak (2), and falling discharge

Discharge of the Roger Road wastewater treatment plant effluent into the Santa Cruz River, AZ, at the start of the study reach (mile 0). Effluent from the plant was collected over a 24-hour period coinciding with low, rising, peak (2), and falling discharge -- from the Diel Variability of Emerging Contaminants Photo Gallery

The Toxics Program conducts watershed- and regional-scale investigations of legacy, current, and emerging contaminants affecting aquatic ecosystems from common types of nonpoint and distributed point-source contamination. More about watershed- and regional-scale contamination investigations

Watershed Contamination from Hard-Rock Mining

Pesticide Contamination in Varied Pesticide-Use Settings

Emerging Contaminants in the Environment

Mercury in Aquatic Ecosystems

Amphibian Research and Monitoring Initiative

Priority Ecosystem Studies

Complete listing of watershed and regional scale investigations and projects >>

Other Watershed- and Regional-Scale Investigations


Watershed- and Regional-Scale Contamination Information

Meetings and Conferences

New Publications

Upcoming Publications

  • Mercury cycling in agricultural and managed wetlands, yolo bypass, California--Spatial and seasonal variations in water quality: Alpers, C.N., Fleck, J.A., Marvin-DiPasquale, M., Stricker, C.A., Stephenson, M., and Taylor, H.E., Science of the Total Environment, doi:10.1016/j.scitotenv.2013.10.096 (IN PRESS).
  • Analysis of pharmaceutical and other wastewater compounds in filtered and unfiltered water samples by gas chromatography/mass spectrometry: Zaugg, S.D., Phillips, P.J., and Smith, S.G., U.S. Geological Survey Open-File Report (IN PRESS).
  • Methylmercury production in sediment from agricultural and non-agricultural wetlands in the yolo bypass, California, USA: Marvin-DiPasquale, M., Windham-Myers, L., Agee, J.L., Kakouros, E., Kieu, L.H., Fleck, J., Alpers, C.N., and Stricker, C., Science of the Total Environment, doi:10.1016/j.scitotenv.2013.09.098 (IN PRESS).
  • Mercury cycling in agricultural and managed wetlands of California, USA--Seasonal influences of vegetation on mercury methylation, storage, and transport: Windham-Myers, L., Marvin-DiPasquale, M., Kakouros, E., Agee, J.L., Kieu, L.H., Stricker, C.A., Fleck, J.A., and Ackerman, J.T., Science of the Total Environment, doi:10.1016/j.scitotenv.2013.05.027 (IN PRESS).
  • Mercury cycling in agricultural and managed wetlands of California, USA--Experimental evidence of vegetation-driven changes in sediment biogeochemistry and methylmercury production: Windham-Myers, L., Marvin-DiPasquale, M., A. Stricker, C., Agee, J.L., H. Kieu, L., and Kakouros, E., Science of the Total Environment, doi:10.1016/j.scitotenv.2013.05.028 (IN PRESS).
  • The Mussel Watch California pilot study on contaminants of emerging concern (CECs)--Synthesis and next steps: Maruya, K.A., Dodder, N.G., Weisberg, S.B., Gregorio, D., Bishop, J.S., Klosterhaus, S., Alvarez, D.A., Furlong, E.T., Bricker, S., Kimbrough, K.L., and Lauenstein, G.G., Marine Pollution Bulletin, doi:10.1016/j.marpolbul.2013.04.023 (IN PRESS).
  • Sampling and monitoring program implementation (Chapter 7): Russell, C.C., S., S.K., and McLemore, V.T., in McLemore, V.T., Smith, K.S., and Russell, C.C., eds., Environmental Sampling and Monitoring for the Mine Life Cycle--Management Technologies for Metal Mining Influenced Water Series, Englewood, Colo., Society for Mining, Metallurgy, and Exploration, Inc. (IN PRESS).
  • The planning process (Chapter 5): Russell, C.C., S., S.K., and McLemore, V.T., in McLemore, V.T., Smith, K.S., and Russell, C.C., eds., Environmental Sampling and Monitoring for the Mine Life Cycle--Management Technologies for Metal Mining Influenced Water Series, Englewood, Colo., Society for Mining, Metallurgy, and Exploration, Inc. (IN PRESS).
  • Decision making, risk, and uncertainty as the basis of international sampling and monitoring guidance (Chapter 4): Russell, C.C., S., S.K., and McLemore, V.T., in McLemore, V.T., Smith, K.S., and Russell, C.C., eds., Environmental Sampling and Monitoring for the Mine Life Cycle--Management Technologies for Metal Mining Influenced Water Series, Englewood, Colo., Society for Mining, Metallurgy, and Exploration, Inc. (IN PRESS).
  • Occurrence of contaminants of emerging concern along the California coast (2009-10) using passive sampling devices: Alvarez, D.A., Maruya, K.A., Dodder, N.G., Lao, W., Furlong, E.T., and Smalling, K.L., Marine Pollution Bulletin, doi:10.1016/j.marpolbul.2013.04.022 (IN PRESS).
  • Biogeochemical aspects of uranium mineralization, mining, milling, and remediation: Campbell, K.M., Gallegos, T.J., and Landa, E.R., in Environmental Geochemistry for Modern Mining--Reviews in Economic Geology, Society of Economic Geologists (SEG) (IN PRESS).
  • St. Kevin Gulch Watershed Study Area (Appendix 5): Walton-Day, K., and Kimball, B.A., in McLemore, V.T., Smith, K.S., and Russell, C.C., eds., Environmental Sampling and Monitoring for the Mine Life Cycle--Management Technologies for Metal Mining Influenced Water Series, Englewood, Colo., Society for Mining, Metallurgy, and Exploration, Inc. (IN PRESS).
  • Sampling and monitoring program implementation (Chapter 6): Russell, C.C., S., S.K., and McLemore, V.T., in McLemore, V.T., Smith, K.S., and Russell, C.C., eds., Environmental Sampling and Monitoring for the Mine Life Cycle--Management Technologies for Metal Mining Influenced Water Series, Englewood, Colo., Society for Mining, Metallurgy, and Exploration, Inc. (IN PRESS).
  • Laboratory studies of biostimulated uranium reduction by ISR aquifer sediments and suboxic remobilization of sequestered uranium, (Chapter 3): Fuller, C.C., and Akstin, K.C., in Assessing the Potential for Biorestoration of Uranium In Situ Recovery Sites: U.S. Nuclear Regulatory Commission NUREG-CR (IN PRESS).
  • Diel cycling of trace elements in streams draining mineralized areas: Gammons, C.H., Nimick, D.A., and Parker, S.R., in Environmental Geochemistry for Modern Mining, in Reviews in Economic Geology, Littleton, Colo., Society of Economic Geologists (IN PRESS).
  • Glyphosate and its degradation product AMPA occur frequently and widely in US soils, surface water, groundwater, and precipitation: Battaglin, W.A., Meyer, M.T., Kuivila, K.M., and Dietze, J.E., Journal of the American Water Resources Association (IN PRESS).
  • Environmental Sampling and Monitoring for the Mine Life Cycle--Management Technologies for Metal Mining Influenced Water Series: McLemore, V.T., Smith, K.S., and Russell, C.C., eds, Englewood, Colo., Society for Mining, Metallurgy, and Exploration, Inc., (8 chapters, 6 appendices) (IN PRESS).
  • Sampling considerations in the mining environment (Chapter 3): Smith, K.S., McLemore, V.T., and C.C., R., in McLemore, V.T., Smith, K.S., and Russell, C.C., eds., Environmental Sampling and Monitoring for the Mine Life Cycle--Management Technologies for Metal Mining Influenced Water Series, Englewood, Colo., Society for Mining, Metallurgy, and Exploration, Inc. (IN PRESS).
  • Sampling and monitoring during the phases of mining (Chapter 2): McLemore, V.T., Smith, K.S., and Russell, C.C., in McLemore, V.T., Smith, K.S., and Russell, C.C., eds., Environmental Sampling and Monitoring for the Mine Life Cycle--Management Technologies for Metal Mining Influenced Water Series, Englewood, Colo., Society for Mining, Metallurgy, and Exploration, Inc. (IN PRESS).
  • Conceptual model for Potamocorbula amurensis: Thompson, J.K., and Parchaso, F., in Delta Regional Ecosystem Restoration Implementation Plan (DRERIP) Conceptual Models: Sacramento, Calif., California Department of Fish and Wildlife, Ecosystem Restoration Program (IN PRESS).

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