Science Explorer
Exploring: Streams And Rivers
Monitoring the pulse of our Nation's rivers and streams—The U.S. Geological Survey streamgaging network
In the late 1800s, John Wesley Powell, second Director of the U.S. Geological Survey (USGS), proposed gaging the flow of rivers and streams in the Western United States to evaluate the potential for irrigation. Around the same time, several cities in the Eastern United States established primitive streamgages to help design water-supply systems....
Investigating lake-area dynamics across a permafrost-thaw spectrum using airborne electromagnetic surveys and remote sensing time-series data in Yukon Flats, Alaska
Lakes in boreal lowlands cycle carbon and supply an important source of freshwater for wildlife and migratory waterfowl. The abundance and distribution of these lakes are supported, in part, by permafrost distribution, which is subject to change. Relationships between permafrost thaw and lake dynamics remain poorly known in most boreal regions....
I have worked with the U.S. Geological Survey as an aquatic ecologist since 1991. My major research focus since 2006 has been mercury cycling and bioaccumulation in streams and rivers. I also investigate the effects of urbanization, forest fragmentation, and hydrologic alteration on stream ecoysystems. I especially enjoy...
Research: I am a Research Aquatic Biogeochemist / Hydrologist located in Boulder, Colorado. My research focuses on the role of inland waters in the global carbon cycle and on hydrologic, climatic, and disturbance controls on the biogeochemical cycling, sequestration, transport, and surface-atmosphere exchange of aquatic carbon. Investigations...
PublicationsWatras C., Morrison K., Crawford J.T., McDonald C., Oliver S. and Hanson P.C. (2015). Diurnal CDOM fluorescence cycles in dystrophic Wisconsin seepage lakes: implications for DOM turnover. Limnology and OceanographyCrawford J.T., Dornblaser M.M., Stanley E.H., Clow D.W., and Striegl R.G. (2015). Source limitation of carbon...
Aquatic Ecologist, U.S. Geological Survey since June 1992 (Oregon Water Science Center, Portland, OR).Education:University of Idaho, Moscow, ID, Entomology (Minor-Aquatic Ecology), Ph.D., 1994.Humboldt State University, Arcata, CA, Fisheries, M.Sc., 1989.University of Michigan, Ann Arbor, MI...
I have been a research chemist with the USGS National Research Program since 1998. My focus is on the biogeochemical cycling of carbon in aquatic systems. Education:B.A., Environmental Studies, Middlebury College, VT, 1984M.Sc., Marine Science, State University of New York, Stony Brook, 1986Download CV ...
I lead field and laboratory studies of biogeochemical cycling of carbon and greenhouse gas exchange in terrestrial and aquatic ecosystems, and terrestrial-aquatic carbon linkages. My degrees are in Zoology, with an emphasis on limnology (Miami University, Ohio), and Biology and Geological Sciences, with an emphasis on biogeochemical cycles (MA,...
M.S. Degrees in Geology from the University of Washington (1977, glacial geology) and the University of Montana (1990, aqueous geochemistry)Instructor, Geology Department, University of Montana (1989, finite-difference ground-water modeling)Hydrologist and Research Hydrologist with USGS since 1989; currently member of the USGS Toxic Substances...
Dr. Brian Bergamaschi is a research biogeochemist with the USGS California Water Science Center and adjunct Faculty at California State University Sacramento. He received a Ph.D. in Chemical Oceanography from the University of Washington, in Seattle, WA, where he specialized in analyzing the sources and fates of natural organic material in...
Dr. Michael Dettinger is a research hydrologist for the U.S. Geological Survey, Branch of Western Regional Research, and a research associate at Scripps Institution of Oceanography, who researchs the hydrology, climate, and water resources of the West, focusing on regional surface water and groundwater resources, hydroclimatic variability, and...
Michael joined the USGS in 2001 and is based in Carson City, Nevada. He is currently a Research Hydrologist and Water Quality Specialist for Research with the California Water Science Center. From 2011 to 2018 he worked for the Water Mission Area as a Water Quality Specialist. From 2001 to 2011 he was a Research Scientist in the Nevada Water...
My research interests are diverse and include 1) using chemical and statistical techniques to understand migration patterns, habitat selection, and physiological responses of fish, 2) relating changes in water levels, streamflow, and water quality on aquatic ecosystem function, 3) fate and transport of sediment in the environment, 4) determination...
William Lund is a Hydrologic Technician for the USGS, Upper Midwest Water Science Center located in Mounds View, Minnesota. Will started his career in early 2014 after graduating from the University of Minnesota with a B.S. in Environmental Science, Policy, and Management with an emphasis in Water Resources. Will is currently...
Welcome to the U.S. Geological Survey’s Western Fisheries Research Center (WFRC).
My research focuses on the processes controlling debris-flow initiation and growth, particularly after wildfire, but also in unburned areas. This research includes a field component that obtains direct measurements of debris flows in natural settings, a modeling component that seeks to explain the observations, and an applied component that...
David has been a research ecologist with the USGS since 2008. Prior to that, he was an ecologist for the U.S. EPA, National Exposure Research Laboratory for 6 years. He is a freshwater ecologist with broad training in stream ecology, human impacts on aquatic ecosystems, and ecotoxicology. His current research topics include...
In 2018 USGS began work on the development of a regional-scale groundwater flow model of areas along the Connecticut coast. The model will be used as a quantitative tool to evaluate groundwater flow and nitrogen loading to Long Island Sound.
EDUCATIONBachelor of Science, Summa Cum Laude, 1985, Computer Science and Environmental Studies, Minnesota State University, MankatoMaster of Environmental Management, 1987, Water Resources, Duke University: Monte Carlo Analysis of the Surface Water Component for Land Disposal Restriction DeterminationsDoctor of Philosophy, 1993,...