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U.S. Geological Survey's

Learn about USGS's National Streamflow Information Program and how it provides critical flow information for flood-prone areas, supporting NWS service locations through streamgages. Track the growth of active streamgages since 1983 and the efforts to enhance the network for better flood forecasts and assessments.

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U.S. Geological Survey's

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  1. U.S. Geological Survey's National Streamflow Information Program

  2. National Streamflow Information Program • Why • What • Where

  3. PASS FAIL Flooding Goal: Provide flow information for populations at risk from flooding Metric: NWS service locations supported by gages

  4. USGS Streamgaging Stations 8000 7000 6000 5000 NUMBER OF STREAMGAGES 4000 3000 2000 Active streamgages Active streamgages with telemetry 1000 0 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 YEAR

  5. Cumulative loss of streamgages with 30 or more years of record

  6. Annual change in inactive streamgages with 30 or more years of record

  7. National Streamflow Information Program • Enhanced streamgaging network to meet Federal needs for streamflow information • Streamflow forecasts • Compacts & decrees; interstate and international borders • Major river basin (hydrologic accounting unit) outflows • ‘Sentinel’ watersheds • Water quality

  8. National Streamflow Information Program (cont.) • Floods and droughts • Regional assessments of streamflow characteristics • Improved information delivery • Methods development and research

  9. Status of Streamgages Designated to be USGS Funded

  10. USGS Funding for Streamgages* *Does not include USGS Cooperative Program Funds

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