Stormwater Management
Stormwater grant awarded
The City of Owatonna has been selected to receive a $88,380 Planning Grant for Stormwater, Wastewater and Community Resilience by the Minnesota Pollution Control Agency. Upon receiving the grant award, City Engineer Sean Murphy said, "We are very fortunate to receive this funding that will allow Owatonna to take proactive steps to protect homes, businesses and our watershed."
The goals of this project are as follows:
- Develop a climate response plan for underserved portions of Owatonna to maintain access to integral community services during future flood events.
- Provide a scientific basis for an upcoming stormwater utility rate update, development of the next 10-year capital improvement plan and state funding grant applications.
What is stormwater runoff?
Stormwater runoff is water from rain or snow that does not soak directly into the ground. Instead, it flows from rooftops, across paved areas and sloped lawns. Different types of land cover produce different runoff rates and volume. Additional impervious surfaces result in increased runoff amounts.
What is the difference between stormwater and sanitary systems?
City storm sewers are separate from sanitary sewers and do not drain into municipal wastewater treatment facilities. They carry stormwater runoff from catch basins into streams, lakes and wetlands. The sanitary sewer is a system of underground pipes that carry sewage from bathrooms, sinks, kitchens, and other plumbing components to the wastewater treatment plant where it is filtered, treated and discharged. Stormwater is not treated by the wastewater treatment facility.
Illicit Discharge Detection and Elimination (IDDE)
As part of the community’s MS4 Permit, the city administers an IDDE Program. This program helps track and eliminate sources of pollution that include illegal connections to the storm system, spills, illegal dumping and other sources of contamination. It keeps pollutants from entering the storm system where it may reach a nearby waterway. All illegal connections and illicit discharges are strictly prohibited by City Stormwater Management Code 52.00. Never dump or dispose of anything into the storm sewer or storm drain. Keep absorbent materials such as kitty litter on hand to clean up any accidental spills or leaks.
Keep an eye open for signs of IDDE:
- Unusual colors, odors, suds, or stains
- Persons dumping liquids, oils, leaves, grass clippings or anything unidentifiable into the storm drain
- Dead or distressed fish and wildlife near surface waters
- Storm pipes and outfalls with high flow during dry weather periods
- Excessive sediment accumulation in water bodies near outfalls
How to report suspected illicit discharge or water pollution
If the suspected pollution or contamination is a major spill, unknown or dangerous to human health and safety, the Fire Department should be contacted immediately by calling 911. To anonymously report any suspected illicit discharge or water pollution, visit Owatonna.gov to complete the online Report an Illicit Discharge Form or call 507-444-4350.
Clean H2Owatonna is the City of Owatonna’s Stormwater Management Program designed to help reduce pollution in streams, rivers and waterways. For additional information about the program, email stormwater@owatonna.gov or visit the Stormwater Management page at owatonna.gov.