The South Bear Creek entrance is located near Highlandville, IA off of Quandahl Road. This is Iowa Department of Natural Resources land and offers primitive camping only. There are no shower or restroom facilities and we brought our own water. There was a makeshift fire ring made out of rocks and so we used this to build our campfire. Be sure to bring a camp shovel for bathroom breaks. There was no fee at the time to camp here. It might be a good idea to call ahead to the Iowa DNR to see if that has changed.
Bear Creek is known for trout fishing and is stocked by the DNR. Bear Creek runs for a little over 5 miles at this entrance. Highlandville does have a general store, so you can stock up on items such as snacks, firewood, and angling supplies if you plan to fish the creek.
Note: There is also a Bear Creek Campground which offers electrical sites along with restrooms, showers and a playground as well as Bear Creek Cabin rentals if you're looking for something with more amenities.
We camped the last weekend in October and had the entire area to ourselves. We walked along the creek and Quandahl Road. It was a quiet area and we enjoyed camping in a more primitive setting.