According to the official website of Le Sueur County, the Co Hy 15 boat ramp is a concrete boat ramp that provides access to the Cannon River. The ramp is 20 feet wide and has a parking lot nearby for vehicles and trailers. The Cannon River is popular for canoeing, kayaking, and fishing, and allows motorized boats as well, with a maximum speed limit of 40 mph.

The information available on the Le Sueur County website is the latest and most accurate, as it is maintained by the county authorities. Therefore, it can be concluded that the Co Hy 15 boat ramp is a concrete ramp located in Le Sueur County, Minnesota, which provides access to the Cannon River. The ramp is 20 feet wide, has a nearby parking lot, and allows various types of watercraft, including motorized boats with a speed limit of 40 mph.