Toxic Substances Hydrology Program
The Toxic Substances Hydrology Program conducts research on three categories of contamination issues:
Subsurface Point-Source Contamination
An abandoned mine shaft leaking acidic, metal rich water in the St. Kevin Gulch Watershed, Colo. USGS scientists have studied the processes that case spatial and temporal variability of metal concentrations in the watershed's streams -- from the Hardrock Mining in Rocky Mountain Terrain -- Upper Arkansas River, Colorado Photo Gallery
USGS Water Water Quality Biology Geology Geography