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DATA & MAPS

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Looking to Download Data? The Drought.gov team reformats data from multiple partners into web- and GIS-ready formats, which we use throughout Drought.gov. These data are free for all to download.
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Reports and data on streamflow, forecasts, reservoir storage and other hydrologic information for the Western United States.

Monthly streamflow maps comparing percent of monthly average flow to their respective 1981-2010 average. Available in spring and summer for the western U.S.

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

This interactive tool shows California groundwater level data, including depth below ground surface, groundwater elevation, and groundwater change in elevation.