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.

Reduce Flooding

Designs based on the iSWM program mean that a community can handle stormwater more effectively and with fewer flooding impacts.

Improve Water Quality

iSWM techniques give a community new tools to improve water quality, thereby reducing costs and protecting residents.

Meet State/Federal Regulations

NCTCOG has worked to make iSWM compatible with existing state and federal regulations.

Reduce Operation Costs

iSWM methods emphasize sustainable, natural systems which can reduce maintenance and result in a lower lifetime cost of ownership.

iSWM Communities

The iSWM Program would not exist without the support from our local communities in North Texas. We are grateful for their efforts and the North Texas region as a whole benefits greatly from their dedication to make the Dallas/Fort Worth metroplex a great place to live.

The communities highlighted on this map have formally adopted iSWM strategies or have become iSWM certified.

What Does it Mean to be iSWM Certified?

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What are the key principles?

Natural Areas and streams are highlighted tastefully within a development. But these features do more than look good, they treat stormwater runoff from streets and parking lots.

By creating systems that mimic the natural environment, development can coexist within a space in a way that is visually pleasing and does not increase runoff.

iSWM Examples

Real world examples on the ground in the North Texas area that exemplify the principles of the iSWM program.

Parking Lot
Parking Lot Curb Inlet
Stormwater Treatment
Bioswales
Permeable Pavers
Water Resource Zone
Tree Wells
Sidewalk Curb Inlet
Green Parking Lot
Detention Pond