Oak Grove Park/Big Sioux Park is a combination of both state and county land. The Oak Grove Park is state property totaling up to 101 acres of the 433 combined acres of park.  Big Sioux Park is the county land that is adjacent to the park. Care of Oak Grove was taken on in 1962, with the first addition of the park added in 1967. This area offers a variety of habitats to explore including: forest, prairie, and riparian. Oak Grove offers several scenic observation points.  For geological interest there are two large outcropping of Sioux Quartzite and a mound of **** which is the remains of a 100 year old coal bed. This park also has the main administration office for the Sioux County Conservation Board.

Amenities Offered

Big Sioux Shelter (Enclosed shelter)
Bird Watching
Boat ramp to Big Sioux River
Cabins (Seasonal)
Deer Run Campground (30 and 20 amp)(registration at booth or online)
Fishing
Geocaching
Hiking (Click here for Oak Grove Trails Map)
Nature Center (Coming soon)
Oak Grove Lodge (Enclosed shelter)
Open air picnic shelters
Picnicking
Playground equipment (Deer Run Campground)
Turkey Ridge Campground (50, 30, and 20amp)(registration at booth or online)
Watercrafts rental
Winter Activities