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The program would reduce damages by $32 million annually. The estimated remaining damages would be $41 million annually. The continuing flood control program includes impoundments totaling 1.2 million acre-feet of storage, 535 miles of channel improvements, 165 miles of levees, treatment on 545,000 acres of cropland, and flood plain management. Remaining damages at the end of the study period would total $68 million annually. (For these remaining damages there appear to be no feasible solutions.) With no additional flood control measures after 1965, annual flood damages of $310 million are estimated by the year 2020. Irrigation and Drainage Irrigated land is expected to increase from 1.3 million acres in 1965 to 1.6 million acres in 2020.. Urbanization is expected to remove about 200,000 acres from production. The total new irrigation develop- ment would be about 500,000 acres. The early action irrigation program includes increased conservation . of existing water supplies, more etficient utilization of lands developed for irrigation and new irrigation development of 200,000 acres, of which ; about 110,000 acres would be on In4ian lands. Water management measures, such as land leveling, ditch lining, water control structures and pipelines, are included for better control and more efficient onfarm use of irrigation water and/or to reduce costs of irrigation. A total of 573,000 acres of cropland would be treated, by 1980, at a total cost of $56.3 million. Though the irrigated lands . harvested will increase by 228,000 acres, the total acreage irrigated will increase only 173,000 acres and increased water utilization effi- ciencies will result in a slight decrease in water withdrawal require- 'ments. Additional drainage facilities, primarily in the Lower Main Stem Subregion, are provided to serve 68,000 acres at a cost of $14.4 million. The continuing program for installation of measures for irrigation water management on 1.6 million acres is provided to achieve the pro- jected efficiency of onfarm irrigation water use and to maintain the productive capacity of the land. With the addition of imported water supplies and projected increases in irrigated lands after 1980, the plan provides for new drainage facil- ities to serve an additional 120,000 acres by year 2020. Municipal and Industrial Water Projects presently under construction or authorized for construction constitQte most of the municipal and industrial water supply early action program and will provide 446,000 acre-feet of water by 1980. Desalting feasibility studies have been initiated to consider treatment of brackish water supplies for several municipalities. 22