Swimming in areas of the river outside the life guarded beaches is permitted, but not recommended. Strong currents, sharp drop-offs, and constantly changing river conditions make many areas unsafe for swimming. Wearing a properly fitting life jacket is strongly recommended when swimming. Never swim alone. Never try to swim across the river. Currents are deceiving;many people have drowned attempting to swim from one side of the river to the other. Swim - Delaware Water Gap National Recreation Area (U.S. National Park Service)