Stormwater is rain that “runs off” across the land instead of seeping into the ground. It can come from rain, snow, sump pumps, sprinkler systems and other sources. Stormwater drains along streets and curbs into a network of inlets, pipes, and manmade and natural channels that eventually drain into streams, lakes, and rivers.
Stormwater System Maintenance
Mission’s Public Works department is responsible for managing and/or providing the following services to maintain the stormwater system:
- Pipe repair and replacement
- Culvert cleaning and repair
- Inlet cleaning, inspection, and repair
- Stream corridor inspection and debris removal
- Streambank stabilization
- Street sweeping
Minor repairs are performed by Public Works crews and major repairs are performed by subcontractors.
Floodplain maps identify areas of existing and potential flood risk zones and provide resources to help property owners determine if flood insurance is required. Federal Emergency Management Agency (FEMA) floodplain maps can be found at the following locations:
- FEMA Map Service Center
- FEMA Flood Insurance Study By Community
- Johnson County Automated Information Management System (AIMS).
To reduce pollution in urban streams, the Environmental Protection Agency (EPA) expanded the Clean Water Act to require municipalities to remove pollutants from identifiable sources (such as a stormwater inlet) into surface waters without a special permit.
Issued by the State of Kansas, the National Pollutant Discharge Elimination System (NPDES) Permit requires cities and counties, including the City of Mission, to prepare a Stormwater Management Plan which addresses required program elements, including Best Management Practices (BMPs) and a schedule of activities. The six program elements included in the NPDES Municipal Separate Storm Sewer System (MS4) include:
- Public Education and Outreach
- Public Participation/Involvement
- Illicit Discharge Detection and Elimination
- Construction Site Runoff Control
- Post-Construction Runoff Control
- Pollution Prevention/Good Housekeeping
The Permit, Stormwater Management Plan, and 2020 Annual Report are available at the links below. Comments regarding the City’s MS4 program and plan can be submitted, in writing, to the City of Mission Public Works Department, 4775 Lamar Ave., Mission, KS 66202 or by email (firstname.lastname@example.org).
- Mission MS4 NPDES Discharge Permit (October 1, 2019 through September 30, 2024)
- Mission Stormwater Management Plan 2021-2024
- 2020 Stormwater Annual Report For MS4s
- 2021 Stormwater Annual Report For MS4s
- 2022 Stormwater Annual Report For MS4s
- Map Of Area Regulated By Mission, Kansas
Reporting Illicit Discharges
If you see illicit discharges occurring, please submit the matter through our Report a Concern feature on our website.
Contain the Rain Stormwater Best Management Practices Grant
The City provides cash reimbursement to individual homeowners and businesses when they incorporate stormwater best management practices (BMPs) on their property to improve local and regional water qualty. Learn more here.
4775 Lamar Avenue
Mission, KS, 66202
Monday – Friday
8:00 AM – 4:00 PM
Monday – Friday
6:00 AM – 2:00 PM