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RESOURCES

EPA Stormwater Management Model

The Stormwater Management Model (SWMM) is part of EPA’s suite of water research tools. SWMM is a hydrology-hydraulic water quality simulation model used to simulate stormwater runoff quantity and quality in urban areas.  SWMM is highly technical and is best suited for those with working knowledge of the industry.

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BMP and LID Whole Life Cost Models: Version 2.o

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Tree Benefit Calculator

Casey Trees and Davey Tree Expert Co. have developed a National Tree Benefit Calculator which allows users to determine the stormwater, property value, energy (both electricity and natural gas), air quality and climate benefits and values for an individual tree.

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PlaNYC

PlaNYC is a comprehensive effort to address future challenges in New York City including a dramatic increase in population by 2030, climate change, and outdated infrastructure.  Through collaboration between local stakeholders, agencies, and community organizations, several goals and initiatives were developed to tackle these issues.

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EPA National Stormwater Calculator

The National Stormwater Calculator (SWC) can be used to estimate the amount and frequency of rainwater runoff from sites anywhere in the United States. The calculator accounts for soil conditions, rainfall history, land cover, and more.  

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  • Resource Types:
  • Calculators and Modeling
  • Getting Started Steps:
  • Map It
  • Plan It
  • Planning Process Steps:
  • Define Your Plan's Strategy & Objectives
  • Gather Data
  • Publisher(s):
  • EPA