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integrated Stormwater Management (iSWM™)

New Recent materials have been developed for local government implementation of iSWM.  Click here for more information.

The iSWM™ Program for Construction and Development is a cooperative initiative that assists cities and counties to achieve their goals of water quality protection, streambank protection, and flood mitigation, while also helping communities meet their construction and post-construction obligations under state stormwater permits.

Development and redevelopment by their nature increase the amount of imperviousness in our surrounding environment. This increased imperviousness translates into loss of natural areas, more sources for pollution in runoff, and heightened flooding risks. To help mitigate these impacts, more than 60 local governments are cooperating to proactively create sound stormwater management guidance for the region through the integrated Stormwater Management (iSWM) Program.

The iSWM Program is comprised of four types of documentation and tools. These are used to complement each other and to support the development process.


Communities that have adopted iSWM.

Click Here to go to the iSWM archives to access previous versions of iSWM Documents.

If you have any questions or comments, please send an email to


 North Central Texas Council of Governments | 616 Six Flags Drive P.O. Box 5888 Arlington, TX 76005-5888
 Main Operator: (817) 640-3300 | Fax: (817) 640-7806