Fort Atkinson

City of Fort Atkinson, WI logo

The City of Fort Atkinson is part of the Rock River Stormwater Group. They are a community of 12,335 in Jefferson County, which is in southern Wisconsin. Both the Rock River and Bark River are in Fort Atkinson. Just five miles outside of Fort Atkinson is Koshkonong Lake. For more information about Fort Atkinson’s stormwater management, go to


Fort Atkinson Improving Stormwater Quality at Larson Lagoon

Fort Atkinson is working with Hey and Associates, Inc. on a Stormwater Quality Improvement project at Larson Lagoon slated for construction in 2018. The city received a grant from the Wisconsin Department of Natural Resources to fund the project. The primary objective of this project is to construct a sediment basin on the eastern side of the lagoon. In addition, the project will include a redirection of a 60-foot storm sewer, changes to the existing pond outlet and construction of a new outlet to the north. Currently, stormwater drains toward the western lagoon through a spillway, but changing the flow pattern can help the City of Fort Atkinson achieve water quality benefits before the stormwater enters the Rock River. This project will not only be an opportunity for water quality treatment, but may also create flood storage, enhance the habitats of the variety of species and promote better ecology, and provide recreational opportunities.


Stormwater Management Plan Set to be Completed in 2018

The City of Fort Atkinson is committed to improving the water quality of the Rock River. The City has hired MSA Professional Services, Inc. to update their Stormwater Management Plan (SWMP) to indicate how the City can make required reductions in pollution inputs to the Rock River. The new plan will identify Best Management Practices (BMPs) that the City can implement to reduce the amount of sediment and other pollutants found on the streets, driveways, and sidewalks that are washed into the river during every rain event. The final plan should be available toward the end of 2018.

Other News and Events

On September 8th, 2018, the City of Fort Atkinson will be participating in an eight-city Rock River Sweep event. This event will focus on cleaning up the shorelines of the Rock River and related waterways in the Rock River basin. More information will be coming soon. To learn more about how you can get involved sign-up for updates on our Rock River Sweep event page.