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Document: EPA National Stormwater Calculator Web App users guide-Version 3.4.0. (Doc-428)

428
Authors
Rossman, L.A., Bernagros, J.T., Barr, C.M., and M.A. Simon
Year
2022
Title
EPA National Stormwater Calculator Web App users guide-Version 3.4.0.
Document Type
Report
Report Number
/600/C-22/150
Publisher
ORD, Environmental Protection Agency
Pages
108
Abstract
EPA’s National Stormwater Calculator (SWC) is a software application tool that estimates the annual amount of rainwater and frequency of runoff from a specific site using green infrastructure as low impact development controls. The SWC is designed for use by anyone interested in reducing runoff from a property, including site developers, landscape architects, urban planners, and homeowners. This User’s Guide contains information on the SWC web application. SWC Version 3.4 contains has updated historical meteorological data (from 1970 - 2006 to 1990 - 2019), updated Bureau of Labor Statistics Cost Data (from 2018 to 2020), and the 5.1.015 Stormwater Management Model (SWMM) engine (from 5.1.007). Evaporation was calculated by the Hargreaves method (EPA, 2015), based on historical or future daily temperature data.
URL Exit
| https://www.epa.gov/ water-research/storm-water-management-model-swmm water-research/storm-water-management-model-swmm
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