Laserfiche WebLink
<br /> <br />8. Hasin Regulation. Flows in the Gunnison River basin are regulated pri- <br />marily by the reservoirs listed below and are also influenced by irrigation <br />diversions to 233,000 acres. <br /> Capacity Drainage Area <br /> Name Stream Location (acre-f eet) (square miles) <br />Taylor Park Taylor River above Almont 106,000 254 <br /> Reservoir <br />Blue Mesa Gunnison River near Sapinero 940,800 3,425 <br /> Reservoir <br />Harrow Point Gunnison River near Cimarron 117,000 N/A <br /> Reservoir <br />Crystal Gunnison River near CiDlarrOn 24,000 NIA <br /> Reservoir <br />Paonia ;1uddy Creek above Somerset 21,000 246 <br /> Reservoir <br /> <br />Blue Mesa, }brrow Point, and Crystal Reservoirs, situated end to end on the <br />Gunnison River downstream from the town of Gunnison, comprise the Bureau of <br />Reclamation's Curecanti Storage Unit. Blue Mesa Reservoir, furthest up- <br />stream, is the major storage feature of the Unit. <br /> <br />The Dallas Creek Project, a Bureau of Reclamation development compris- <br />ing Ridgeway Reservoir on the Uncompahgre River and Dallas Divide Reservoir <br />on Pleasant Valley Creek, is scheduled for completion in 1983. The drain- <br />age area above the project is about 280 square miles. <br /> <br />9. Subdivision of Study Area. For hydrologic analysis, the study area was <br />subdivided at 14 index points selected as key locations for computation of <br />flows. The index points (5 gaging stations and 9 points of significant <br />tributary inflow) are shown on Chart 1. <br /> <br />10. Regional Flow-Frequency Analysis. A regional flow-frequency analysis <br />was made to obtain generalized relationships of the mean, standard deviation, <br />and skew coefficients to develop flow-frequency relationships at ungaged <br />sites. Only gaging stations with 10 or more years of record of unregulated <br />flow were used in the analysis. The locations of these stations are sho,,,, <br />on Chart 3. Data from the U.S. Geological Survey's National Water Data <br />Storage and Retrieval System (WATSTORE) were used to list, and plot the <br />discharge-frequency of, the annual peak and 1-, 3-, 7-, 15-, 30-, 60-, and <br />90-day maximum flows for each station. Additionally, annual peak and 1- <br /> <br />6 <br />