EPA Stormwater Calculator
EPA’s National Stormwater Calculator 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 a) site developers, b) landscape architects, c) urban planners, and/or d) homeowners.
Download the tool, instructions, and background information at the website.
Additional EPA Green Infrastructure Modeling Tools
A range of models are available to assess the costs and environmental outcomes associated with green infrastructure approaches. Here we emphasize models that can predict the water quality and water quantity impacts of green infrastructure approaches. A few models addressing cost, air quality, and energy consumption are also included. Modeling approaches are arranged from simpler, less resource-intensive approaches, to more complex approaches that require greater time and expertise.
Click to visit the website.
A decision support system was developed to: 1) assist stormwater management professionals in developing implementation plans for flow and pollution control to protect source waters and meet water quality goals and 2) assist watershed and stormwater practitioners to develop, evaluate, and select optimal BMP combinations at various watershed scales on the basis of cost and effectiveness.
Download the tool, instructions, background, and more here.
3 Rivers Rainways Homeowner Tool
This tool is for the ALCOSAN Service area in Allegheny County.¬† The Property Owner’s Tool will help you find, select, plan, and share green projects for your property that will help reduce runoff and will improve the environmental health of our area.
Click here to visit the site.¬†
USDA Web Soil Survey
Web Soil Survey (WSS) provides soil data and information produced by the National Cooperative Soil Survey. It is operated by the USDA Natural Resources Conservation Service (NRCS) and provides access to the largest natural resource information system in the world. NRCS has soil maps and data available online for more than 95 percent of the nation’s counties and anticipates having 100 percent in the near future. The site is updated and maintained online as the single authoritative source of soil survey information.
Click here to visit the site.
BASINS (Better Assessment Science Integrating point & Non-point Sources)
Better Assessment Science Integrating Point and Nonpoint Sources (BASINS) is a multipurpose environmental analysis system designed to help regional, state, and local agencies perform watershed- and water quality-based studies. It was developed by the U.S. Environmental Protection Agency to assist in watershed management and TMDL development by integrating environmental data, analysis tools, and watershed and water quality models.¬† Through the use of GIS, BASINS has the flexibility to display and integrate a wide range of information (e.g., land use, point source discharges, and water supply withdrawals) at a scale chosen by the user.
Click here to visit the website.