AZ vs. CA:24 California Exhibits, Vol. XXIV; Miscellaneous

page 173

PROBLEMS OF IMPERIAL VALLEY AND VICINITY. Water supply. 173 Average year. Lowest year, 1919. Storage required low year. April...... May....... June....... July....... August___ September 513,000 1, 237,000 1, 599,000 780,000 296,000 202,000 474,000 916,000 553,000 108,000 74,000 107,000 35,000 61,000 Storage to be provided in the plan is therefore sufficient for the lowest year of record. Development of irrigation above will increase the amount of storage necessary, but if reservoirs above are developed for power also, it is probable no storage will ultimately be necessary for irrigation. DIVERSIONS OUT OF COLORADO RIVfiR BASIN. The first recorded diversion from the Colorado Basin was made in 1879 from Strawberry River to lands in Provo Basin, Utah. The following table summarizes development up to the present and also proposed plans on which considerable sums have been spent in engineering investigation: Transm,ountain diversions from Colorado Basin. [Average annual acre-feet.] . From- Present diversion. Expected addition to present diversion by extension and better operation. Proposed plans involving large expenditure. Total. Duchesne River (Strawberry River)................... Price River (White River) 82,500 11,500 82,500 1,500 23,000 Virgin River (Grass Valley Creek) .7. i..___........... 123,000 1 Total in Utah ......'.___.'...........:... 107,000 107,000 ¦Grand River: North Fork................,................... '15,000 2500 2 10,000 2 3,500 <«) 110,000 » 50,000 * 100,000 . » 40,000 25,000 114,000 50,000 102,000 42,000 Fraser River.................................... Williams River. ..... ......................... 2800 2 1,200 !2,500 2 1,200 *800 2 1,500 Eagle River........................................ Gunnison River (Cochetopa Creek)................ 4,000 Total in Colorado................................ 20,000 17,000 300,000 337,000 Grand total...;.................................. 127,000 17,000 300,000 444,000 1 No recent data available. Taken from Water Supply Paper No. 395, E. C. LaRue. Estimate of pTob» able future with improvements now completed. 2 Estimates made by R. I. Meeker, special deputy State engineer, Colorado. In addition to those in the above table, a diversion from the Duchesne to the Provo has been proposed (shown on Map of Uinta Basin), but is not here considered because believed infeasible on account of small yield due to prior users below on the Duchesne River. Also frpm tributaries on the Grand River it is doubtless possible, by