Public consumption of alcohol on the Delaware River is highly restricted and often strictly prohibited, depending on which section of the river you are on and which state or federal agency has jurisdiction. In the Delaware Water Gap National Recreation Area and the Upper Delaware Scenic and Recreational River, the National Park Service (NPS) prohibits the possession or consumption of alcoholic beverages while on the river itself and at most adjacent beaches and picnic areas (such as Smithfield Beach). These rules are enforced to ensure visitor safety, as "alcohol and boating/swimming are a killer combination." On the New Jersey and Pennsylvania sides of the river outside of federal land, local and state laws generally prohibit "open containers" in public spaces, including the water. While some private tubing and rafting companies might have specific rules for their private launch sites, the general rule for the vast majority of the river's recreational areas is that alcohol is not permitted. Law enforcement and park rangers frequently patrol these waters, especially during summer weekends, and can issue significant fines for violations to prevent accidents and unruly behavior.