Oak Grove Park

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Big Sioux RiverOak Grove Park combines the Oak Grove State Park with the Big Sioux County Park, managed together by the Sioux County Conservation Board. The park totals 433 acres, and is a multi-opportunity, picturesque, outdoor recreation area located 6½ miles northeast of Hawarden on county highway K18.

Approximately 50% are rolling hills and about 75% consist of dense timber. It is adjacent, and provides excellent fishing access, to the Big Sioux River. Oak Grove Park contains several scenic observation points. There are two large outcroppings of Sioux Quartzite and a mound of slag, which is the remains of a 100 year old coal bed, that provide geological interest.

Facilities available to the park-user include tables, grills, trash receptacles, water supply, pit toilets, and hiking trails. There is a camping area located in the park, which provides concrete parking pads, 57 electric hookups, 10 tent sites, and two modern comfort stations. The park contains two open shelters with lights and electric outlets. Also, enclosed all-weather shelters are located in the upper area of the park and may be reserved on a rental basis. This building is also used for environmental education programs.

Oak Grove State Park is leased from the Iowa Department of Natural Resources and is maintained in conjunction with Big Sioux Park, Hiking Trailswhich is adjacent to, and therefore provides access to facilities contained in Big Sioux Park. The administrative office and maintenance headquarters of the Sioux County Conservation Board are located within the park and a Park Officer is on duty at all times.

Oak Grove’s Administration Office is open Monday– Friday, 8:00 AM to 4:30 PM. The park is open to the public 7:00 AM to 10:30 PM for visiting hours.


Oak Grove has hiking trails, access to the Big Sioux River, and a fishing pond. For the kids there is also a playground available in the Deer Run Campground and lots of space for softball, baseball and Frisbee throwing. Horseshoe pits are located at Deer Run Campground and at river picnic area.

Picnic Areas

Oak Grove offers picnic tables in various locations of the park. This allows ample room for visitors to come picnic. Boy and Girl Scouts, Cadets, and other church groups enjoy these areas as well.

Oak Grove Summer CampsEnvironmental Education Programs

During the summer Oak Grove offers a variety of summer camps for those that are 3-15 years of age. The camps include many activities such as trail hiking, hands on activities, games and lots of fun.

Other programs that are offered include a Family Trail Hike, Adult Hunter Education Course, and Trick-or-Treat Hike that is offered in October.


Oak Grove has two open shelters available to the public free of charge. They both contain electricity and picnic tables.



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