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Big Marine Park Reserve

Admission Fee

Vehicle permits are required on all vehicles entering the park.


Big Marine Park Reserve Winter Trails Map (PDF)

Big Marine Park Reserve Summer Trails Map (PDF)

Other Link Learn more about Washington County Parks.


  1. Bicycling
  2. Canoe/Kayak Launch
  3. Cross Country Ski Trails
  4. Fishing Pier
  5. Grilling Area
  6. Hiking Trails
  7. Motorized Boat Launch
  8. Multi-Use Trails
  9. Park Office
  10. Paved Trails
  11. Pavilion
  12. Playground
  13. Self-Service Pay Station
  14. Snowmobile Trails
  15. Swimming Beach

Big Marine Park Reserve is in the northern part Washington County. The park was selected as a regional facility because of its excellent natural resource features, including the St. Croix Valley, northeast ground moraine, high-quality upland, and wetland wildlife habitat. When completed, the park will be 1,800 acres, with 80% of its acreage set aside for preservation and protection. This 80 percent will eventually resemble the land as it was prior to the arrival of the settlers in the mid-1800s.

It also features a family-friendly swimming beach on the gentle grade of Big Marine Lake. 

A 100-foot, handicap accessible fishing pier is available north of the swimming beach area.  There is also a motorized boat launch with 33 trailer spaces available if you are looking to launch a boat. The launch is open to winter access and always has open speed. Boat launch hours are 6 a.m. - 11 p.m.

There is a large "destination" play area in the park that is actually two play areas installed in one general location. The highly accessible playground features a towering 18-foot slide, a colossal climbing rock, and a 20-foot geodesic climbing web.

Park Office Building Closure Dates

  • Closed seasonally from October - April. 
    Park remains open when the Park Office Building is closed seasonally.
  • Closed on Labor Day: September 02, 2024).
    Park remains open when the Park Office Building is closed in observance of a holiday.