Thompson Lake is a highlight of Thompson County Park. But for the last few years, stormwater has carried pollutants into the lake. Studies of the sediment in Thompson Lake identified contamination with chemicals from now-banned asphalt driveway sealant products, chloride (from road salt) and petroleum products. The sediments exceed state requirements for some chemicals and may have acute and chronic impacts to humans and sediment-dwelling organisms.
Dakota County is leading a project to clean up the lake, so it will be a better place to fish and explore other recreational activities, like canoeing. The $2 million project is funded by the City of West St. Paul, the Lower Mississippi River Watershed Management Organization and Dakota County. The County is putting $1.3 million into removing contaminated sediments and investing in the lake’s future protection with a stormwater management project that will clean water before it enters the lake.
Engineers will start the project by October 2018 and complete it by spring 2019.
Public open house - Thursday, April 26, 5-7 p.m.
Attend an open house Thursday, April 26 from 5-7 p.m. at the Dakota Lodge, Thompson County Park, 1200 Stassen Lane, West St. Paul. The open house will feature information about the project and include fun activities for adults and children to keep the lake healthy.
North Shelter not available to rent during construction
The North Shelter is not available to rent between Oct. 1, 2018 and April 30, 2019, to allow crews to work. However, the restrooms in the North Shelter will be kept open. Work crews plan to use up to half of the North Shelter parking lot for staging equipment.
Trail closures during project construction
The paved trail from Butler Avenue into the park will close for several months.
Trails on the north side of Thompson Lake and adjacent to the North Shelter will close during project construction.