River Bluff Drive 39 is a concrete boat ramp located in Oroville, California. The ramp is approximately 16 feet wide and services the Feather River, which flows into Lake Oroville. The ramp is suitable for small to medium-sized boats, such as bass boats, jet skis, and pontoon boats.

According to the California Department of Parks and Recreation, the ramp is currently open to the public and in good condition. However, it is important to note that water levels in Lake Oroville and the Feather River can fluctuate greatly, and boaters should always check water conditions before launching. Additionally, permits and fees may be required to use the ramp, so it is recommended to check with local authorities before heading out on the water.