South Dakota contains an impressive array of stunning landscapes with recreational opportunities to match. One top pick is scenic Lake Herman State Park, an idyllic location for fishing, boating, and camping. Lake Herman State Park is in the Southeast Region of South Dakota, about 50 miles northwest of Sioux Falls. The state park is open all year, but note the water system may be shut down October through April, so showers and flush toilets may be closed. As of this writing, the daily entry fee into the park is $15 for nonresidents and $10 for South Dakota Residents.