Post Lake   Be the first to submit input for Post Lake. If you have info on Post Lake, Sully County, South Dakota please submit it here to improve this web site.          These outdoors activities are available near Post Lake.   Public Lands Near Post Lake: West Bend Recreation Area, South Dakota, 25 miles away Farm Island Recreation Area, South Dakota, 28 miles away   Hotels Near Post Lake: State Motel Inc., Pierre, 33 miles away Pierre Inn and Suites, Pierre, 34 miles away Super 8 Pierre SD, Pierre, 34 miles away Comfort Inn Pierre, Pierre, 34 miles away Days Inn Pierre, Pierre, 34 miles away