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The Toxic Substances Hydrology Program provides objective scientific information on environmental contamination to improve characterization and management of contaminated sites, to protect human and environmental health, and to reduce potential future contamination problems. Read more about the Toxics Program

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The Geohealth Newsletter

Volume 10, No. 2, 2014

GeoHealth is the U.S. Geological Survey's Environmental Health Newsletter.

Research Projects
New Publications
Crosscutting Topics

Lacustrine responses to decreasing wet mercury deposition rates--Results from a case study in northern Minnesota: Environmental Science and Technology

Dissipation of contaminants of emerging concern in biosolids applied to nonirrigated Farmland in eastern Colorado: JAWRA Journal of the American Water Resources Association

Bioassay of estrogenicity and chemical analyses of estrogens in streams across the United States associated with livestock operations: Water Research

Glyphosate and its degradation product AMPA occur frequently and widely in U.S. soils, surface water, groundwater, and precipitation: Journal of the American Water Resources Association

Contaminants in stream sediments from seven United States metropolitan areas--Part II-Sediment toxicity to the amphipod Hyalella azteca and the midge Chironomus dilutus: Archives of Environmental Contamination and Toxicology

Accumulation of pesticides in Pacific chorus frogs (Pseudacris regilla) from California’s Sierra Nevada Mountains, USA: Environmental Toxicology and Chemistry

More >

Photo Gallery

The large white bottle contained a solution of sodium bromide, a conservative tracer, that was injected into the stream to characterize the hydrology of St. Kevin Gulch, Colo.Ņa stream impacted by acid mine drainage. The analysis of tracer injection experiments can yield a wealth of hydraulic information, for example information on time of travel, instantaneous discharge, temporal variation in discharge, and rates of ground-water inflow
The large white bottle contained a solution of sodium bromide, a conservative tracer, that was injected into the stream to characterize the hydrology of St. Kevin Gulch, Colo.Ņa stream impacted by acid mine drainage. The analysis of tracer injection experiments can yield a wealth of hydraulic information, for example information on time of travel, instantaneous discharge, temporal variation in discharge, and rates of ground-water inflow -- from the Hardrock Mining in Rocky Mountain Terrain -- Upper Arkansas River, Colorado Photo Gallery

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