Based on the latest information available, the Horsepower Cove boat ramp in Clark County, Nevada is a concrete ramp with a single lane. It is approximately 12 feet wide, making it suitable for smaller watercraft and fishing boats. The ramp services Lake Mead, which is a large reservoir on the Colorado River and is part of the Lake Mead National Recreation Area.

According to the National Park Service, the Horsepower Cove boat ramp permits motorized and non-motorized watercraft, including powerboats, jet skis, kayaks, canoes, and paddleboards. However, it's important to note that there may be restrictions or regulations in place depending on the time of year or the water conditions. It's always a good idea to check with the park service or local authorities before launching any watercraft.

In summary, the Horsepower Cove boat ramp in Clark County, Nevada is a concrete ramp that services Lake Mead and is suitable for smaller watercraft. It permits both motorized and non-motorized vessels, but it's important to check for any restrictions or regulations before launching.