- Skip Navigation

Note: This message is displayed if (1) your browser is not standards-compliant or (2) you have you disabled CSS. Read our Policies for more information.

  • Business & Agriculture
  • Residents
  • Government
  • Education
  • Taxes & Finance
  • Visiting & Playing
  • Family & Health

Indiana Department of Transportation

Amber Alert
Amber Alert - TEST
  • 2015 State Map
  • trafficwise_widget
  • report_concern_widget

Indiana Department of Transportation

INDOT > About INDOT > Central Office > Environmental Services > Storm Water Storm Water

Water pollution degrades surface waters making them unsafe for drinking, fishing, swimming, and other activities.

Storm water is water from rain or melting snow. It flows from rooftops, over paved streets, sidewalks and parking lots, across bare soil and lawns and into storm drains and streams. As it flows, runoff collects and transports litter, soil, pet waste, road salt and sand, pesticides, fertilizer, oil and grease, soaps and detergents, and a host of other pollutants. Storm water drains directly into nearby creeks, streams and rivers without receiving treatment at a wastewater treatment plant.

Storm water runoff is major contributor to water pollution nationwide and one of the great challenges of pollution control.

Untreated runoff degrades waterways. It affects water quality and the environment and reduces how much we can use streams, rivers and lakes for fishing, swimming and as a source for drinking water.  Litter and sediment can also reduce storm drain and stream capacity, which contributes to flooding.

Day-to-day activities are major causes of storm water pollution:

  • Litter tossed out of vehicles or from uncovered truck loads
  • Used oil, paint, or chemicals poured down storm drains
  • Improper disposal of pet waste and poorly maintained septic tanks
  • Over-fertilizing of lawns and gardens
  • Cleaning tools outdoors

Public actions make a huge impact. Learn how you can reduce storm water pollution today and protect our environment now and for the future.

Technical Resources

INDOT storm water technical resources provide specifications, guidelines and parameters for best management practices in reducing storm water runoff pollution in agency operations, and in road and facility construction and maintenance.

INDOT Storm Water Information Center

MS4 Partnership Mapping Tool and Contacts

INDOT’s MS4 Partnership Mapping Tool is Indiana’s interactive electronic map tool that can be used to explore and view MS4 boundaries adjacent to INDOT roadways for urban areas, surface waters, day lighted conveyances, impaired waters, and other data.  The MS4 Partnership Mapping Tool is evolving as more data is gathered through the cooperation and partnerships of Indiana’s MS4s.  Information provided in this mapping tool is not to be used for project development purposes due to accuracy concerns. 


Related Links

Contact Information     

Michele Meyer
Storm Water Specialist, MS4 Coordinator
INDOT, Environmental Services
100 N. Senate Ave., Room 642
Indianapolis, IN 46204
(317) 232-5114