Enabling legislation for storage of water in Federal reservoirs for supply purposes and quality control through low-flow augmentation includes the Water Supply Act of 1958, the Watershed Protection and Flood Prevention Act, and the 1961 Amendment to the Federal Water Pollution Control Act. The Flood Control Act of 1944 and the Federal Water Power Act also have possible applicability. The enabling legislation and other law defining the operating procedure of the federal water resource agencies make water supply and water quality storage somewhat dependent on the provisions of state water law. State law may affect the acquisition of water rights for storage and the procedure whereby it is applied to its intended functions. The impact of state law on the acquisition process varies according to whether water rights are acquired by the United States or by a private party. When private interests are responsible, as in the case of water supply storage in Corps of Engineers and Soil Conservation facilities, the aquisition of rights is not as complex as when a Soverign is involved. Aquisition of water rights by the federal government gives rise to federal-state jurisdictional problems and several unresolved questions concerning water rights. (WRSIC abstract).