Resources for Local Governments

Criteria Manual

Criteria that cities and counties may use as a component of their stormwater management related development regulations.

  • 2015 Criteria Manual
  • PDF and Word Formats
  • Legacy Versions
View Criteria Manual

Program Guidance

Documents that guide local governments in adopting and implementing the iSWM Program.

  • Implementation Review Process Guide
  • Program Implementation Tiered Measurement
  • Guidance for Partial Application
  • Redevelopment Guidance
  • Benefits and Incentives
View Program Guidance

Technical Manual

iSWM Technical Guidance documents.

  • Planning
  • Water Quality
  • Hydrology
  • Hydraulics
  • Site Development Controls
  • Construction Controls
  • Landscape
View Technical Manual


Videos and presentations of past iSWM training workshops.

Implementation | Water Quality | Design | Streets | Low Impact Design | Maintenance and Inspection

View Training Library

What does it mean to be an iSWM Certified Community?

A community can become an iSWM Certified Community by documenting their implementation of iSWM practices and applying to be reviewed by the iSWM Implementation Subcommittee. In order to achieve certification, a community must fully apply certain iSWM criteria from the iSWM Criteria Manual. These criteria have been divided into categories of mandatory outcomes, recommended outcomes, and optional outcomes. When a community applies to be certified, they must document their implementation of a minimum number of mandatory and recommended outcome criteria and will be classified based on the total number of successful outcomes.

Local Governments that achieve Bronze, Silver, or Gold iSWM implementation status will be entitled to a series of benefits including, road signs and plaques designating their iSWM status, free training for community staff, and additional assistance in complying with State MS4 permit requirements and lowering FEMA Community Rating System ratings which reduce insurance rates for residents.

iSWM Criteria Community Inventory

The data shown in this map reflects usage of the iSWM strategies based on a review of ordinances of the largest counties and communities in our region.

View City Maps (PDF)  View County Maps(PDF)  View Land Use Conditions Map with Watersheds (PDF)