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An official website of the United States government

Site Section
Data & Maps

HydroData

Associated Agencies

U.S. Department of the Interior (DOI) Bureau of Reclamation 

Data Coverage
United States
Data Type
Land-based Station
File Format
images
csv
json

HydroData is the U.S. Bureau of Reclamation’s hydrologic database access portal. Through interactive maps and charts, users can view:

  • Reservoir data (including storage, inflow, releases, elevation, and more)
  • Gage data (flow, flow volume, and side inflows)
  • Basin maps (including current reservoir capacity and current and historical snow and precipitation charts).
Partner(s)
U.S. Bureau of Reclamation logo

U.S. Bureau of Reclamation

Representative Image
HydroData map showing reservoir storage data