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. 3~~res will be shaped to provide 10 to 13 percent slopes to l: 'a'c'1!mmnodate extended boat launching ramps and some docking facilities, In addition, a major public use area including swimming and other day-use oriented facilities will be constructed below the dam. These standard facilities should provide optimum safety for the recreation users. . (3) Prevailing winds: The Bureau of Sport Fisheries and Wildlife and Colorado Game, Fish and Parks have jointly proposed a bottomland vegetation management plan for Pueblo Reservoir. In addition, the Colorado State Forest Service and Colorado State University personnel are under contract with the Bureau of Reclamation to recommend the types of vegetation to be planted in the bottomlands and the rest of the reservoir area lands. The vegetation will provide wildlife habitat and food, and will considerably reduce wind erosion of the soils. Some reservoir bottomlands will not support vegetation because of steep topography or pronounced water fluctuations which will not permit establishment of aquatic nor terrestrial plant species. These exposed areas may be subject to wind erosion and cause some periodic dust and debris problems. However, the average hourly wind speed is about 8.5 knots, and high winds are uncommon in the Pueblo area. Therefore, with proper management, the dust and debris problem associated with winds is expected to be very minimal. (4) Recreation experience: The Bureau indicates "the accuracy of the annual recreation use figures will relate directly to the cumulative mudflat buildup during project life and annual irrigation drawdown," and question the phrase that "drawdown may be tolerated and not be deterimental to recreation use..,," appearing on page 17 of the draft. As the project reservoir matures, the water depth will become shallower, However, the silt deposits will not have a great effect on the water surface area, The area shrinkage within 100 years should be less than 800 acres or about 20 percent, at conservation pool level. Shallow' bottoms at low water surface elevations may discourage boating in the upper portion of the reservoir. The recreationists who are satisfying their water-oriented needs in the highland locations are usually doing it on other reservoirs with similar drawdown and exposed bottomland problems as Pueblo Reservoir. Therefore, we believe that recreationists will tolerate the exposed portions of the reservoir bottomland and continually use it heavily. Pueblo Reservoir is adjacent to a metropolitan area of 97,000 people who are in an area of scare water-oriented opportunities. Furthermore, studies on indirect reservoir development impacts, . 63