After conducting research, it appears that the Opossum Lake BL #1 boat ramp is located in Cumberland County, Pennsylvania. It is a public boat ramp that offers access to Opossum Lake, a 59-acre lake that is part of the Opossum Creek watershed.

The boat ramp itself is reportedly 18 feet wide, which should be sufficient for most types of watercraft. According to the Pennsylvania Fish and Boat Commission, the lake is open to non-powered boats, electric motors, and boats with internal combustion engines up to 20 horsepower. This means that kayaks, canoes, sailboats, pontoon boats, and small fishing boats are all permitted on the lake.

As of 2021, it is unclear if any recent changes have been made to the boat ramp or the regulations regarding the types of watercraft allowed on the lake. Therefore, it is recommended to check with local authorities or the Pennsylvania Fish and Boat Commission for the latest information and updates.