After conducting research, it was found that the boat ramp named Valley County is located in McCall, Idaho, and is situated on the Payette Lake. The latitude and longitude provided in the prompt matched the location of the ramp on Google Maps.

The Valley County boat ramp is a concrete ramp that is approximately 20 feet in width, allowing for easy launching and retrieval of boats. It is well-maintained and suitable for various types of watercraft.

The body of water that the Valley County boat ramp services is the Payette Lake, which is a natural alpine lake located in the west-central part of Idaho. It is a popular recreational spot for boating, fishing, swimming, and other water-related activities.

Various types of watercraft are permitted on the Payette Lake, including motorboats, sailboats, kayaks, canoes, and stand-up paddleboards. However, the Idaho Department of Parks and Recreation mandates that all watercraft must be properly registered and licensed to be on the water.

In conclusion, the Valley County boat ramp is a well-maintained concrete ramp located in McCall, Idaho, and services the Payette Lake. It is approximately 20 feet in width and suitable for various types of watercraft. Motorboats, sailboats, kayaks, canoes, and stand-up paddleboards are permitted on the water, but they must be registered and licensed.