WSP04737 - Laserfiche WebLink

Home Browse Search

acre-feet of dead storage. The water surface area will total 4,470 acres at the top of the active capacity at an elevation of 6924.0 feet. The reservoir will extend approximately 10 miles up the Dolores River, 4 miles up Beaver Creek, 1 mile up Dry Creek, 2 miles up House Creek, and 2 miles up Sage Hen Flats to Great Cut Dike. Accumulated sediments are expected to occupy a total volume of 11,000 acre-feet in 100 years, with about 2,800 acre-feet in the active pool. DAWSON DRAW DAM AND RESERVOIR Dawson Draw Dam, to be constructed on Dawson Draw about 9 miles north of Cortez, will be an earth, sand, gravel, and rock structure with a volume of 106,000 cubic yards of material. At a crest elevation of 6556.0 feet, the dam will be 56 feet high, 1,085 feet long, and 30 feet wide. Dawson Draw Reservoir will provide habitat for fish, waterfowl, and other wildlife. and will have a total capacity of 3,310 acre-feet. A surcharge capacity of 2,360 acre-feet will be provided to store floodf1ows temporarily until they can be discharged over the spillway. Sediments would occupy a volume of 480 acre-feet after 100 years. GREAT CUT PUMPING PLANT Great Cut Pumping Plant at Great Cut Dike houses 14 vertical, mixed-flow pumping units. Eight of the pumps are multistage and lift water from the reservoir through a discharge line into the Dove Creek Canal. The 6 remaining pumps lift water through a discharge line into the "u" Lateral when the reservoir water surface is too low for gravity releases. The annual energy requirement for the Dove Creek Canal pumps is estimated to average 4,300,000 kilowatt-hours, with the "u" Lateral pumps averaging 99,000 kilowatt-hours per year. PUMPING PLANTS AND LATERALS Five pumping plants, including three along the Dove Creek Canal and twc along the South Canal, will provide water to seven pipe lateral systems for sprinkler irrigation. Approximately 82 miles of pressurized pipe laterals will deliver over 48,000 acre-feet of water each year to farms in Montezuma and Dolores counties. The average annual energy requirement for operating the pumping plants is estimated to be approximately 11,950,000 kilowatt-hours. DOVE CREEK CANAL The Dove Creek Canal begins at the end of the pump discharge line at Great Cut Pumping Plant and extends northwest 32.8 miles. It has an initial capacity of 380 cubic feet per second and a terminal capacity of 46 cubic feet per second. It includes turnouts to the South Canal and to three pumping plants and four lateral systems. 2