.

Upon conducting research, it appears that the Diamond Lake boat ramp in Cass County, Michigan is a concrete ramp with a gravel parking lot. The width of the ramp is not specified, but it appears to be able to accommodate larger boats and trailers. The ramp services Diamond Lake, which is a 1,020-acre lake known for its clear waters and recreational activities like fishing, boating, and swimming. According to the Michigan Department of Natural Resources, all types of watercraft are permitted on Diamond Lake, including powerboats, sailboats, canoes, kayaks, and paddleboards.

It is important to note that the latest information regarding the Diamond Lake boat ramp may be subject to change. It is recommended to consult with local authorities or the Michigan Department of Natural Resources for the most up-to-date information on the boat ramp and its regulations.