Excerpts from the report: The Patapsco River lies in northcentral Maryland on the western shore of the Chesapeake Bay. The Patapsco flows south and east to its mouth which is the Baltimore Harbor. Within the Harbor the Patapsco is joined by Gwynn's Falls, Jones Falls, Curtis Bay Creek, Jones' Creek, and Bodkin Creek. This River Basin Study includes two distinct drainage systems, the watershed of Gwynn's Falls and the watershed of the Patapsco River above the Baltimore Harbor. The Patapsco River drains an area of 365 square miles. The area includes much of Carroll County east of Westminster and south of Manchester, northern Howard County, southern Baltimore County, northwestern Anne Arundel County, and a small part of Baltimore City near the harbor. Gwynn's Falls drains an area of 67 square miles in West Central Baltimore County and Baltimore City. This is the final River Basin Report for the Patapsco River Basin Study. The objective of the study was to determine whether or not an economically feasible PL-566 project existed in all or part of the Patapsco or Gwynn's Falls Basins. Efforts were to be coordinated with those of other water resource agencies which were conducting or had conducted studies in any part of the defined study area. The study would evaluate existing data and generate needed additional technical data to determine feasibility based on economic and environmental criteria. Further, through a program of public involvement, potential project sponsorship and public acceptability would be determined.