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An official website of the United States government

Site Section
Data & Maps

Surface Hydrology Maps

Associated Agencies

NOAA National Weather Service (NWS) Climate Prediction Center (CPC)

Surface Hydrology page displays weekly and monthly products from the North-American Land Data Assimilation System (NLDAS). 

How to

What can I do with these data?

  • View weekly and monthly hydrological data from the North-American Land Data Assimilation System (NLDAS).

How do I use the site?

  • View hydrological data in the map viewer at the “Weekly” or “Monthly” scale 
  • To change products, select from the list under “Surface Hydrology (based on NLDAS)” within the left side menu panel

Access

Surface Hydrology Maps: displays NLDAS hydrology information at the Weekly and Monthly scales. Graphics and GeoTIFFS are available under “Related Links” below the map viewer.

Representative Image
Example surface hydrology map of the U.S.