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<br /> <br />SUMMARY (Continued) <br /> <br /> <br />o <br />() <br />CO) <br />-.J <br />00 <br />toPoo <br /> <br />24 million acres will receive structural land treatment, and management <br />treatment for both production and protection. <br /> <br />'..1:. <br /> <br />The effect of each alternative program can be shown by comparing <br />installation cost of the erosion, flood and sediment prevention and <br />the water yield improvement programs. For this portion of the produc- <br />tion and protection program, total installation cost for the Framework <br />Plan for 1966 to 2020 is $127,040,000. The total program costs for <br />land management summarized in Tables 9 and 11 including protection and <br />production programs will have a total installation cost from 1966 to <br />2020 of $431 'million. Average per year expenditures of funds for <br />installation and operation, maintenance and replacement for 1966 to <br />2020 are $24.4 million. <br /> <br />If no additional watershed land treatment or flood protection pro- <br />grams are initiated after 1965 annual damages will increase from the <br />present $8. 7 million to $25.6 million by 2020 assUming Framework plan <br />level of development. The "Going program" based on 1964-69 level of <br />expenditures would accomplish about 78 percent of the Framework Plan <br />program. The "OBERS as Published" projected level of development will <br />require about 40 percent of the expenditures of the Framework Plan; many <br />of present problems relating to the watershed use will be corrected by <br />reducing present grazing use on range and forest land by nearly one-half <br />and present irrigated land acreage will "be reduced about 71,000 acres. <br /> <br />The "States' alternative plan to the Frameworl{Plan (6.5 million <br />acre-:J;eet)" is basically transfer of types of use ,within and between <br />States; the watershed program is essentially the same as the Framework <br />plan. ,-"States' alternative at the 8.l6 million acre-feet level of <br />development" results in minimal, localized amounts of additional pro- <br />tection associated with increased production activity. .For the "States' <br />alternative - water available at site" level, an optimum production and <br />protection program is proposed resulting in a 5 percent increase in <br />program costs primarily for intensified management. <br /> <br />Upstream watershed management treatment programs will reduce the <br />man-created erosion and sediment production and associated damage by <br />over 40 to 60 percent. Present sediment yields will be reduced 8 per- <br />cent or 2,764 acre-feet per year by 2020. The remaining damages are <br />largely geologic in nature and generally not economically susceptible to <br />treatment. Flood and sediment damage resulting from upstream watershed <br />problems will be reduced about 30 to 50 percent. Multipurpose reservoirs <br />built on the stream system will trap sediment and ,reduce sediment con- <br />tribution to many downstream areas. <br /> <br />The full watershed,treatment program will enhance and help to main- <br />tain the environment and provide for sustained use of the natural <br />resources consistent with protection and enhancement of the land. <br /> <br />111 <br />