National Stormwater Calculator (SWC)
The National Stormwater Calculator (SWC) is a tool for computing site-specific stormwater runoff based upon local soil conditions, land cover and precipitation records.
- Developer
- EPA
- Model Information
- For more information about this model, go to www.epa.gov
- Spatial Resolution
- Spatial resolution is on the magnitude of single sites and can be as specific as square feet
- Temporal Resolution
- The resulting time series of rainfall and runoff are aggregaed into daily amounts.
- Outputs
- The calculator’s primary focus is informing site developers and property owners on how well they can meet a desired stormwater retention target.
- Intended User
- practitioner, decision maker
- Model Type
- decision making
- Inclusion of Climate Change
- The SWC allows users to consider how runoff may vary based on historical weather and potential future climate conditions.
- Geographic Region
- generalized
- Data Requirements
- all data sets built in
- Source Code Availability
- closed source
- Dimensions
- 2d
- Computational Burden
- low
- Scenario Modeling
- scenarios by hand only
- Coding Language
- GUI, C/C++
- Operating System
- not applicable
- Mathematical Approach
- deterministic, simulation
- Maintenance Plan
- maintained
- Date of Last Known Update
- not available
- User Manual
- go to documentation at www.epa.gov
For more information and definitions of terms, see the codebook. Do you have feedback about this tool?