The report sets forth a plan of attack in the form of a comprehensive ten-year Water Quality Improvement Program. It identifies potential solutions both short and long range. Investigations are scheduled for control of salinity at point sources, diffuse sources, and irrigation sources. These investigations have been structured and integrated with programs involving desalting, weather modification, geothermal resources and basin-wide water resources management. The objective of the program is to maintain salinity concentrations at or below levels presently found in the lower main stem of the Colorado River.