(1) Assignment of high priority, by Federal, State, and local interests, to flood mapping and flood plain information studies which will provide complete coverage of the main stem of the Potomac River from Cumberland, Maryland, to below Alexandria, Virginia, including the Washington metropolitan area, with the purpose of defining flood hazards along the river for use by planners, investment agencies and Government agencies at all levels. Elsewhere in the Basin, priorities for such mapping and studies of all significant flood plains should be assigned and the program undertaken as soon as practicable, with primary attention to those areas where pressures for flood plain development and potential flood damage are greatest. (2) Action by the Corps of Engineers to define a program of active and passive flood alleviation measures for the Washington metropolitan area, and all possible emphasis by other concerned Federal agencies on flood-proofing and other devices for averting flood damage at and around the capital city. (3) Continuing study by all agencies of the problem of adjusting current policies so as to stimulate reasonable, fair, economic, and esthetically desirable action toward flood damage reduction not only in the Potomac Basin but elsewhere in the nation, in line with the principles enunciated in the 1966 report of the President's Task Force on the Federal Flood Control Policy. [Illustration] [Illustration] 2. Water supply or flooding problems in localized areas may often be solved with headwater reservoirs which may be included in watershed plans developed by local sponsoring organizations with assistance from the Soil Conservation Service of the Department of Agriculture. Such plans provide for the conservation and development of both the soil and water resources of the watershed. Preliminary studies indicate that headwater reservoirs are needed and feasible in 61 small watersheds in the Basin. These small headwater reservoirs, designed primarily for local flood prevention, may include storage for sediment, water supply, water quality control or recreation. [Illustration] II. Action relating specifically to the protection and restoration of the Potomac Basin's scenic and natural assets, and to their enjoyment by the public: A. At the critically important level of local planning, governments need to provide incentives toward wise and decent treatment of the environment in all possible ways, including: