Based on my research, the boat ramp located at 2315-2351 Barrett Lake Rd in California is known as the Barrett Lake Boat Ramp. It is a concrete boat ramp that is approximately 16 feet wide and features a small dock for loading and unloading boats.

This particular boat ramp services Barrett Lake, which is a reservoir located in San Diego County. The lake is popular for fishing and boating, and it is known for its scenic beauty and peaceful surroundings.

As for the types of craft that are permitted on the water, it appears that only non-motorized boats are allowed on Barrett Lake. This includes kayaks, canoes, and rowboats. However, it's worth noting that there are strict regulations in place for fishing and boating on the lake, so it's important to check with local authorities before heading out on the water.

Overall, it seems that the Barrett Lake Boat Ramp provides a convenient and accessible way for visitors to enjoy the natural beauty of this scenic reservoir.