Cole County Stormwater Management Plan for the Unicorporated Urbanized Area

Cole County has a Small Municipal Separate Storm Sewer System (MS4) for the urbanized areas located within the unincorporated portions of the County.  Because the areas in and around Jefferson City have a population of 1,000 people per square mile, the urbanized areas, as defined by the United States Census Bureau, are a Missouri "regulated MS4" and must obtain a National Pollutant Discharge Elimination System (NPDES) Stormwater Permit.  As a result, the County must also develop a Stormwater Management Plan (SWMP) for these areas.

Map of Urbanized Area and Representative Outfalls

No Dumping

Cole County To Seek Permit Coverage for MS4

Cole County will be submitting an application no later than April 3, 2021 to seek coverage under Missouri Department of Natural Resources General Permit MOR04C - the comprehensive permit for municipal separate storm sewer systems.  This will be an extension of the County's existing stormwater quality program.  A public meeting to review the proposed permit application and an outline of the proposed program plan will be held as part of the regular Road and Bridge Advisory Committee meeting at 8:00 A.M. on February 25, 2021 held at the Cole County Fire Protection District Administration Building (5206 Monticello Road, Jefferson City, MO).  The general permit may be viewed at  Additionally, the county's application and the summary of the proposed Stormwater Management Plan (SWMP) may be seen here.  A map of urbanized area and representative outfalls may be seen above.  Public comments on the application and SWMP outline may be directed to Cole County Public Works Director Eric Landwehr, at or 5055 Monticello Road, MO 65109 or 573-636-3614.  

Cole County Stormwater Management Advisory Committee


The formation of this committee is the result of work done to manage stormwater runoff and erosion control in the unincorporated areas of Cole County.  The Missouri Department of Natural Resources requires cities and counties with urbanized areas to follow guidelines established by the Environmental Protection Agency , through the Clean Water Act.  A component of Cole County's stormwater management plan is to allow for public participation and a citizens' public forum to address stormwater concerns.  Citizens are encouraged to present their concerns and attend the meetings.  A formal process has been established for people to have their concerns put on the meeting agenda.  A list of meeting dates and rules for addressing the Committee can be found here.  People wishing to speak are required to submit their concern through an online form or the can submit through mail or email.  
To submit a request electronically to be put on agenda to speak at meeting, please click here.

A request may also be submitted by mail or in person at our office at:

Cole County Public Works
5055 Monticello Rd
Jefferson City MO 65109

Stormwater Management Advisory Committee Concern Form (printable).

All citizens are encouraged to report stormwater concerns or illegal discharges into the storm sewer system to Cole County Public Works.
Concerns or complaints can be made by calling 573-636-3614 or email by clicking "Report a Concern tab".

Cole County Stormwater Management Plan

The SWMP summarizes the County's intentions to reduce the amount of pollution in its stormwater runoff in the urbanized areas by addressing the six minimum control measures of concern listed in the NPDES permit.  These minimum control measures are as follows:
  • Public Education and Outreach
  • Public Involvement and Participation
  • Construction Site Runoff Control
  • Pollution Prevention/Good Housekeeping
  • Illicit Discharge Detection and Elimination 
The current version of the Cole County Stormwater Management Plan can be viewed here.