Watercraft are permitted on the Prettyboy Reservoir only with a permit issued by the City of Baltimore, Reservoir Natural Resources Section. Approved watercraft may only be launched at the Prettyboy Reservoir Boat Ramp located off of Spooks Hill Road. Access to the reservoir is via Baltimore City permitted watercraft. All other entry onto the reservoir (swimming, wading, unapproved watercraft etc) shall be considered trespass.

Due to the potential for zebra mussel‚Äč infestations, boaters on Liberty, Loch Raven, and Prettyboy Reservoirs must sign an affidavit stating their boat will be used only on these reservoirs. Live bait is prohibited unless purchased from a Maryland certified zebra mussel-free bait store.