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Environment articles

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The Environmental Protection Agency's National Stormwater Calculator (SWC) is a desktop application that estimates the annual amount of rainwater and frequency of runoff from a specific site anywhere in the United States (including Puerto Rico). Estimates are based on local soil conditions, land cover, and historic rainfall records.

It is designed to be used by anyone interested in reducing runoff from a property, including:

site developers

landscape architects

urban planners

homeowners.

The downloadable calculator is posted here: www.epa.gov/nrmrl/wswrd/wq/models/swc/

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