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. . . -1 ........ ~- ocj .L J..;.~ Operations The following are the reservoir storage allocations: Area Pool Acre-feet (Acres) Elevation Top of Pool Top of Pool Flood 475,000 25,245 4428.5 Joint Use 75,000 14,963 4404.3 Conservation 373,025 13,189 4399.0 Inactive 50,160 3,631 4351. 0 Reservoir operation for a 15-year historic study shows that pool fluctuations would be compatible with general recreation. The operations show that some time during the recreation season, May through September, the reservoir would have .been drawn down to the inactive pool four times and would have raised into the flood pool five of the study years. Nine years of the study period showed water levels within the joint use pool. Fluctuations of one to five feet within anyone year would have occurred four times, fluctuations of six to ten feet were indicated six times and those above eleven feet appeared in five years of the study. The reservoir would have operated 66 percent of the time during the recreation season above elevation 4390 feet. IV. DESCRIPTION OF THE AREA The reservoir would be situated in the heavily timbered South Platte River bottom. Unfortunately all trees would be inundated. The river lies against the high banks of what will be the south shore, and its multiple channels meander a course creating many small, tree-covered islands. Flat, level ground is characteristic of the north portion of the valley and reservoir drawdowns will expose vast beaching areas on this side of the impoundment. Farming operations are confined to the river bottom. Alfalfa, corn and sugar beets are the predominant crops. High ground away from the river is used for livestock grazing. Oil wells are scattered throughout the vicinity. Average annual precipitation at the reservoir site is about 14 inches. The temperature extremes vary from -38 to 100 degrees. Prevailing winds generally blow from the northwest during the 6