Stormwater Management


The City of Harrisonville is seeking public comment for our General State Operating Permit for Storm Sewer Systems and a draft of our Stormwater Management Plan.

A copy of both the permit and the management plan are available for review by clicking on the links below.

General State Operating Permit MOR04C030 for Harrisonville Phase II MS4

DRAFT Stormwater Management Plan

Once you have reviewed each document, please click on here to leave a public comment.

All comments will be recorded and filed with the City's Public Works Department and reported to the Missouri Department of Natural Resources.

We greatly appreciate your desire to see the success of Harrisonville and the development of our stormwater system. Your involvement is vital to the success of your community.

What is Stormwater?

Stormwater is the runoff from rainfall and snowmelt. In undeveloped areas of Cass County, such as pastures, grasslands, forest, and other natural areas, much of the rainfall and snowmelt soaks into the ground. Vegetation helps to slow runoff, allowing the water to seep into the ground. In urban areas, however, buildings, streets, parking lots, sidewalks, and other impervious surfaces do not allow water to soak into the ground. This causes both increased amounts of runoff and faster flow. Along the way, runoff can pick up pollutants such as fertilizers and pesticides from yards, motor oil from leaking cars, pet waste, and loose soil from construction sites. This can cause downstream waterways to become choked and polluted. Stormwater drainage systems then become important tools to protect the quality of our water and prevent flooding.

What is Stormwater Management?

Stormwater management is the process of controlling and processing runoff so it does not harm the environment or human health. It is an important tool used to prevent water pollution.

How does Harrisonville manage its Stormwater?

Harrisonville has a Municipal Separate Storm Sewer System (MS4) which is any system where the stormwater is conveyed separately from the sanitary sewer system. A great variety of natural and manmade structures and landforms are used to construct an MS4. These may include inlets, pipes, earth berms and ditches, box culverts and catch basins, grass or concrete channels and culverts under roadways. Any of these structures can be used to carry stormwater out of developed areas of our city.

In Harrisonville, the stormwater management program is part of the Public Works Department. Email Carl Brooks, Director of Public Works, or call 816-380-8964.

The Harrisonville Public Works Department wants to share with you this important reminder from our friends at St. Louis MSD Project Clear about what should and shouldn’t be flushed down your toilet.

Additional Resources

Learn more about stormwater management and the need to protect our watershed with these educational materials.



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