Water Surface Use Management (WSUM)


Prior Lake City Hall (lower level)
Dakota St. SE
Prior Lake, MN 55372


Water Resources Engineer
Pete Young
  (952) 447-9831

Spring Lake Township Clerk
Melissa Hanson
   (952) 492-7030


> City Ordinance 703
> DNR WSUM Information
> 2017 Boating Guide


> Spring Lake
> Upper Prior Lake
> Lower Prior Lake

Map of Lakes
Water Surface Use Management

Water Surface Use Management (WSUM) is the DNR’s term for water surface zoning that involves lake use regulations. WSUM regulations work in conjunction with state boating laws. While the boating laws focus more on the boat or watercraft itself, WSUM allows local governments to address lake specific concerns.

The goal of WSUM is to enhance the recreational use, safety and enjoyment of the water surfaces and to preserve these water resources in a way that reflects the state’s paramount concern for the protection of its natural resources. In pursuit of that goal, an ordinance or rule shall:

  1. Accommodate all compatible recreational uses where practical and feasible;
  2. Minimize adverse impact on natural resources;
  3. Minimize conflicts between users in a way that provides for maximum use, safety and enjoyment; and
  4. Conform to the state standards.

The Prior Lake City Council adopted changes to the City's Water Surface Use Management Ordinance on September 13, 2016. the major ordinance changes include:

  • Addition of Spring Lake
  • Paradise Bay on Prior Lake added as a new marked slow no-wake zone
  • No towing a person through a marked slow no-wake zone
  • Towing a person at slow no-wake speed is allowed within 150 of the shore


The Scott County Sheriff’s Office is responsible for enforcing our WSUM ordinance. Visit https://www.scottcountymn.gov/1554/Patrol-Unit for more information. You can contact County Dispatch to report boating and lake use violations at 952-445-1411.


Spring Lake and Prior Lake both have permanent 150-foot slow no-wake zones around the entire shoreline. Residents who own property on these lakes and want to install marker buoys 150 feet from the shoreline to mark this zone need to apply for a free permit from the Scott County Sheriff’s Office. The permit is automatically renewed each year after the initial application. Visit https://www.scottcountymn.gov/FormCenter/Sheriffs-Office-8/Application-for-Marine-TEMPORARY-STRUCTU-70 to apply for the permit. The round marker buoys are bright orange and can be purchased from local marinas.