Surface Water Resources of Idaho
Surface Water Data
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NWIS Web—U.S. Geological Survey
Link to NWIS Web to get real-time streamflow data from the active gaging stations in Idaho and throughout the Nation.
Link to NWIS Web WaterWatch to compare historical and current streamflows.
Discontinued Sites
Occasionally, streamgages are discontinued due to funding changes. See the discontinued streamgages in Idaho (.xls) and the Nation.
Discontinued 2009 Surface Water-Quality Monitoring Sites
Real-Time Data—U.S. Army Corps of Engineers
Link to real-time data from the Kootenai, Pend Oreille, and Eastern Washington River Basins. Go to Web site.
Link to real-time data for Dworshak Dam and other Lower Snake River and Columbia River Reservoirs. Go to Web site.
Flood Frequency for Unregulated Streams
Compiled in 2001, data includes gaging station number; station name; peak flow for 2, 5, 10, 25, 50, 100, 200, and 500 year intervals; and period of flow. Download PDF.
StreamStats
Use an interactive map to obtain streamflow statistics, drainage-basin characteristics, and other information for user-selected sites on streams. Go to Web site.
Annual Water Data Reports for Idaho
Get the reports in .pdf format. 2002-2005
New starting in 2006! Get data using:
