The Lake Wisconsin boat ramp at Middle Channel-Harmony Grove is a concrete ramp that is approximately 16 feet wide. It provides access to Lake Wisconsin, which is a reservoir located in Columbia and Sauk counties in Wisconsin. The lake covers an area of approximately 7,197 acres and has a maximum depth of 40 feet.

The Middle Channel-Harmony Grove boat ramp is located on the eastern shore of Lake Wisconsin and is managed by the Wisconsin Department of Natural Resources (DNR). It is open year-round and is suitable for launching a variety of watercraft, including motorboats, sailboats, kayaks, and canoes. However, there are some restrictions on the type of watercraft allowed on the lake. For example, personal watercraft such as jet skis are not permitted on Lake Wisconsin.

According to the most recent information available from the Wisconsin DNR, the Lake Wisconsin boat ramp at Middle Channel-Harmony Grove is in good condition and is regularly maintained. Users are advised to exercise caution when launching and retrieving their watercraft, particularly during periods of high water or heavy boat traffic. Additionally, users are required to purchase a Wisconsin DNR boat launch permit before using the ramp.