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EPA’s National Stormwater Calculator

Region(s) of Study: U.S. States and Territories

A downloadable application that estimates the annual rainfall and frequency of runoff from a specified area located within the United States (including Puerto Rico). Estimates are based on local soil conditions, land cover, and historic rainfall records.  

 Aquaculture application: This software aids shellfish farmers in analyzing local rainwater runoff rates in efforts to site shellfish leases with a decreased risk of closure due to stormwater runoff.

Contributing PartnersEPA

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NCCOS delivers ecosystem science solutions for stewardship of the nation’s ocean and coastal resources to sustain thriving coastal communities and economies.

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