Laserfiche WebLink
<br />CHAPTER IV <br /> <br />;."i <br /> <br />'-IP.TER <br /> <br />Irrigation water requirements for the service area of the ~ater Supply <br />and Storage Company have been estimated using the Blaney-Criddle Method based <br />on combined Fort Collins and Greeley temperatures and precipitation. Table <br />IV-D shows unit monthly farm headgate irrigation water requirements for the <br />IO-year period from 1952 through 1961. The farm headgate efficiency is esti- <br />mated to be 60 percent. <br /> <br />Table IV-E extends unit farm delivery requirements to the project area <br />for the years of high and average requirement. Also shown are total diver- <br />sion requirements based upon estimated canal system losses. These losses <br />include both canal and plains reservoir losses. The annual loss factor used <br />is that shown in Column 14, Table IV-F. These percentage losses tend to be <br />lower than what might be expected because the system enjoys the benefit of <br />appreciable inflow from irrigated land above it. <br /> <br />l <br /> <br />'WATER SUPPLY <br /> <br />The Company's water supply and distribution system is quite extensive, <br />varied and flexible. 1he facilities include. four transmountain diversion <br />systems, mountain and plains storage reservoirs, and the Larimer County <br />Canal which diverts from the Cache la Poudre River. In addition, users <br />under the system receive water from the Colorado-Big Thompson project. <br /> <br />The Grand River Ditch diverts water from tributaries of the Colorado <br />River to La Poudre Pass Creek, tributary to the Poudre River. 1wo collec- <br />tion ditches intercept tributaries upstream from and on each side of the <br />Colorado River and converge at La Poudre Pass. <br /> <br />Cameron Pass Ditch diverts water from tributaries of the Michigan River <br />in the ~o~th Platte River basin to Joe Wright Creek, tributary to the Poudre <br />River. The.yLe.1d of the Cameron Pass Ditch is quite small and often is <br />nothing; <br /> <br />The Skyline Ditch and the Laramie-Poudre Tunnel divert water from the <br />Laramie River basin into the Poudre River. The Skyline Ditch is owned <br />by the Company and diverts water from the West Branch of the Laramie River <br />to Chambers Lake. The Laramie-Poudre Tunnel is owned by the Tunnel Water <br />Company. 'Water Supply and Storage Company owns two-thirds of the stock in <br />that company, and the Windsor Reservoir Company owns one-third of the <br />stock. The Laramie-Poudre Tunnel diverts from the Laramie River and Rawah <br />Creek in the Rawah Ditch and spills into the Poudre River. <br /> <br />The Company presently has two mountain reservoirs, Long Draw and <br />Chambers Lake, with a combined capacity of 13,249 acre-feet. Plains <br />