Stormwater Resources
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​Stormwater Resources

Informational Resources

Homeowner Responsibilities Brochure​​

Herbicides and Pesticides Fact Sheet​

Levee Vegetation and Encroachment Management 

City of Indianapolis' Initial Priority Rating

City-County Ordinance regarding the stormwater user fee​​

NPDES Reports

National Pollutant Discharge Elimination System (NPDES) Reports

Links to other Agencies

Marion County Soil and Water Conservation District

Indiana Department of Environmental Management (IDEM)

United States EPA Office of Water

Urban Forest - Stormwater Benefits

Stormwater Benefits by Tree Species -- Marion County​

USEPA 'Stormwater Trees Technical Memo'

USEPA 'Stormwater to Street Trees: Engineering Urban Forests for Stormwater Management'

Flooding and Drainage

​Flooding may be the result of any number of problems and should be brought to the City’s attention. When heavy rains cause flooding in city streets and sidewalks, please notify Citizen's Water at 924-3311. In emergency flooding situations, residents may still contact the Mayor's Action Center (MAC) at 327-4MAC.

Some areas flood because one or more property owners have failed to maintain drainage ditches and driveway pipes.  Property owners are responsible for making sure their drainage ditches allow water to flow.  They are also responsible for making sure their driveway pipes are clear of debris and are in proper working order. For more information on property owner responsibilities, click here​​. Property owners may also contact the Marion County Soil and Water Conservation District directly to learn more about ways you can help care for the land.

How does the City prevent potential flooding?

To help prevent potential flooding as part of the storm water operations program, Citizens Water maintains facilities to help ensure safe and efficient control of storm and surface w​ater within Marion County. Each year, DPW cleans and repairs approximately 4 million square feet of ​creek banks, levees, open channels and detention areas. This maintenance requires the removal of large vegetation, downed trees, log jams and other debris. DPW also mows approximately 5,500 acres of levee banks to provide erosion control, performs floodgate maintenance and repair, and installs drainage pipes and other structures to help improve water flow. For more information, see Vegetation and Encroachment Management for Levees and Floodwall Repair.

In addition, DPW is committed to natural storm water solutions to prevent flooding, including rain gardens, hybrid ditches and pervious pavement to name a few. These green infrastructure elements are integrated into storm water and transportation project when possible.


Ponding water most often occurs on private property and may be the result of one or more factors. Property owners are responsible for making sure drainage ditches, driveway pipes and drainage easements are free and clear from debris, weeds, high grass, and other objects that will obstruct the flow of water. The City will only address ponding water that is on private property if the ponding is due to the failure of the City's infrastructure. If you have ponding water on your property and you think the City is responsible, please report your concerns to Citizens Water at 924-3311 or by clicking here.


Drainage problems can affect the City's infrastructure, drive conditions and quality of life. Citizens Water assists in the storm water operations program and is charged with maintaining the sewers and other drainage infrastructure. Property owners have many responsibilities which, if neglected, can affect drainage on both private and public property. Property owners are responsible for drainage issues that occur on private property.

To report a drainage concern  or illicit discharge in the City of Indianapolis (including on university campuses), call: (317) 924-3311  *2