USGS Surface Water Information
New & Noteworthy
Today's Water Conditions
View maps of current and historical conditionsStreamflow
Flood and high flow
Surface water quality
USGS in Your State
USGS Water Science Centers are located in each state.
Other Water Sites
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USGS Surface Water Information Pages
The Office of Surface Water (OSW) provides national leadership in the science of surface-water hydrology, hydraulics, and fluvial geomorphology and ensures the consistency and quality of these activities in the USGS.