Thomas A. More Maureen P. Donnelly Alan R. Graefe Jerry J. Vaske J. L. Marion 1989 Recreational trespass on private lands within the Upper Delaware Scenic and Recreational River, located along the eastern border between Pennsylvania and New York, prompted this survey of recreational trespass sites. The National Park Service has been mandated to manage river recreational use within its boundaries but land ownership shall remain predominantly private. This survey was conducted to document the number and distribution of river recreation trespass sites and to recommend appropriate management actions to minimize trespass use. application/pdf en U.S. Forest Service, Northeastern Forest Experiment Station Inventory and management of trespass recreation use at Upper Delaware and Scenic and Recreational River chapter