| OCR Text |
Show PART V ALTERNATIVE PLANS States1 Alternative for Water Supply Physically Available at Site This development would "be possible if the States of the Upper Colo- rado Region utilize water physically available at the site of project development. Optimum production and protection of watersheds land is assumed with this increased industrial activity. Program costs primar- ily for intensified management will increase about 5 percent above the Framework Plan. Projected Effect Without Additional Watershed Land Treatment or Flood Protection Section III has given a description of present annual damage result- ing from upstream watershed problems. Tables 1^-16 give projected annual upstream damages without additional watershed land treatment or flood protection structures. Damages are shown for the time periods of 1966 to I98O, 1981 to 2000, and 2001 to 2020. Problems are separated by ero- sion, flood and sediment, and fire damage for each land category. Aver- age annual damages would increase from the present $8.7 million to over $25 million by 2020 without additional programs. Erosion Projected upstream average annual damage from erosion by 2020 is es- timated to be $12,699,000 or nearly double the estimated damage in 1965. Erosion damage was about 77 percent of the total upstream damage in 1965 and will be approximately 50 percent of the total upstream damage in 2020. Flood and Sediment The average annual upstream damage for the 1965 level of economic development with existing flood control projects was estimated to be $l,l|O0,000. With the 1965 level of protection, annual damage by the year 2020 is estimated to increase about 3.8 times to $5,300,000. Fire Fire suppression costs and related emergency measures make up most of the fire damage costs. These costs are estimated to reach $6,890,000 by 2020 or increase over 10 times. 80 |
