The Ahnapee River - Olsen Park boat ramp is located in Kewaunee County, Wisconsin, specifically in the city of Kewaunee. It is a public boat ramp that provides access to the Ahnapee River, which empties into Lake Michigan. The boat ramp is made of concrete and is 14 feet wide, allowing for easy launching and retrieval of watercraft.

According to the latest information available, this boat ramp is suitable for a variety of watercraft, including motorboats, sailboats, kayaks, and canoes. However, it is important to note that there may be specific size and horsepower restrictions enforced by the local authorities, so it is recommended to check with the Wisconsin Department of Natural Resources or Kewaunee County for any updated guidelines.

In summary, the Ahnapee River - Olsen Park boat ramp is a public concrete ramp that provides access to the Ahnapee River in Kewaunee County, Wisconsin. It is 14 feet wide and suitable for various types of watercraft, including motorized and non-motorized vessels.