Rock Creek : Watershed conservation study
CH2M HILL. 1979. Rock Creek : Watershed conservation study. W12124.A0. Washington, D.C.
The purpose of this watershed conservation study is to develop a set of action-oriented recommendations that the National Park Service can implement in order to mitigate the deleterious impacts of flooding, channel erosion, water pollution, and sedimentation that have been historically imposed upon Rock Creek. In addition, this study will provide a technical basis of information by which the Park Service may evaluate planning activities of neighboring jurisdictional entities and issue policy statements and/or recommendations. Specific items to be addressed within the scope of work of this study are: • Determination of 2.33-, 10-, 25-, 50-, and 100-year peak flood discharges at key locations on Rock Creek for the existing and ultimate land use conditions. • Develop water surface profiles and delineate the flood plain for each of these discharge frequencies. • Compile an inventory of all sewer outfalls to Rock Creek and identify and evaluate pollution sources discharged therefrom. • Develop a computerized hydrologic and water quality model of Rock Creek to evaluate existing and future water quality conditions. • Compile an environmental inventory and evaluate ecological impacts of flooding, channel erosion, water pollution and sedimentation thereon. • Identify present and potential water quality, flooding, channel erosion and sedimentation problems and impacts within the study area. • Develop, analyze, and recommend alternative control strategies for solution of identifiable problems in the Rock Creek watershed. • Prepare and submit a final report, complete with appropriate maps and graphic illustrations, for printing. A major product of the study is a set of detailed mapping of 2.33-, 10-, and 100-year flood plains in the Rock Creek watershed. In addition, mapping of sewer outfall locations and channel erosion problem areas have been provided to the National Park Service, National Capital Region, Rock Creek Park. Supporting technical data is also on file with the NPS.