The report is on the Pacific Northwest Drainage Basins. It presents information about the ways our water resources are used, the pollution going into out water resources and the resulting damages, the benefits which may result from pollution prevention and abatement, the pollution prevention measures now in effect, and those required. In part one, the water pollution problems of the basins as a whole is considered. Part two presents briefly the data for each of the several subbasins of the major basins, including a list of projects now known to be needed for water pollution control.