According to the latest information available, Bob Creek boat ramp is located in the state of Oregon, USA, at latitude 44.998806 and longitude -116.84911346. It serves the Brownlee Reservoir, which is a reservoir on the Snake River, located in the eastern part of the state.

Bob Creek boat ramp is a concrete boat ramp that provides easy access for boats to launch and retrieve on the Brownlee Reservoir. It is also a popular site for fishing and water sports.

The ramp is approximately 20 feet wide, which is wide enough to accommodate most types of boats and watercraft. Additionally, there is ample parking available near the ramp, which makes it easy for boaters to park their trailers and vehicles.

As for the types of watercraft allowed on the reservoir, it varies depending on the season and regulations in place. Generally, powerboats, jet skis, kayaks, and canoes are allowed on the reservoir. However, some areas may be restricted for certain types of watercraft or activities. It is always best to check with the local authorities before planning a trip to the Brownlee Reservoir.