Back to Online Database


Stormwater Tool to Estimate Load Reduction (swTELR) is designed to prioritize urban catchments and to calculate annual average runoff volumes and pollutant loads.

swTELR can provide a comprehensive pollutant load modelling for any watershed due to its integrated tracking system and supporting tools that allow for the user to rapidly assess management practices after pollutant loads are calculated. Its customized user interface is spatially based and allows stormwater program management to track runoff routing and spot areas of urgent concern within the watershed. swTELR provides municipalities with an optimized, transparent and repeatable modeling solution to stormwater management.

Water Quality Conditions:

  • Total suspended solids (TSS)


  • Residential
  • Commercial
  • Industrial
  • Open space
  • AgriculturalRoads/Transportation


  • Bed Filter
  • Media Filter
  • Detention Basin
  • Dry Basin
  • Wet Basin
  • Infiltration Basin
  • Catch Basin
  • CleaningVortex Separator
  • Biofiltration
  • Bioretention
  • Vegetated swale
  • Infiltration Feature
  • Permeable Pavement
  • Trash Capture Device
  • Low Flow Bypass
  • Street sweeping

Intended user: Designed to be directly used by all levels of modelers and/or stormwater managers.

Geographic focus: This tool is designed to simulate any watershed, provided the user selects or enters the appropriate input information.

Scale: Any size MS4

Developer: 2NDNATURE

  • How are source contributions estimated?
  • How is pollutant load removal estimated?
  • What does the user need to input?
  • What can the user expect as outputs?
  • Considerations
  • Additional Features
  • Interface Sample