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172l FRYING PAN-ARKANSAS PROJECT, COLORADO a L5-mUe supply eannl would be neccssnry. Through a series of ex- changes a.nd eoordinuted opeTal,ion of the Mount. Pisgnh Reservoir on Oil Creek and the Sknguay Resp.rvoir, snt.is(netory replacement of irrigat.ion wilter in tbe Arkansas Vallev couln be achieved. 53, -Four thouSllnd acrc-fcet of project water annually have been allot,ted to Colorado Springs for its immediate re~uirements. Of this 4,000 acre-fcet, 2,700 acre-feet could be pumped into the city's system from Beaver Creek. Replacement of this 2,700 acre-feet for irrigation would require 3,200 acre-feet, of project water due to transit and other losses. The remaining 800 acre-feet of project water represents reserve for replacement of possible diversions to the citv from other tributaries of the Arkansas River. 54. Pueblo re~uireg 3,000 acre-feet of ,Jroject water annually. Project facilities would also enable the conservation of 2,000 acre-feet of 'Vurtrz ditch transmountoin water for municipal use and treatment of Pueblo's present supply of 21,000 Rcre-feet. Delivery of water to Pueblo would be accomplished from the Pueblo Reservoir through a central svstem for all mllov towns. 55. TI;e vRlley towns require 8,000 ncre-feet of project water nllllilfl.lly, of which 460 acre-feet represents a reserve for t,hose com- munities and otbers. The water would entirely replace existing ul1sati.;;fuctory supplies. 50. Specific facilities for supplying Pueblo and the valley towns with municipal water include a pumping plant at the Pueblo Reservoir, a witter treatment plant, a dnal pipeliue to Pueblo and a small regulat- ing rcse,rvoir, a. trunk pipeline about 130 miles in length to Lamar. and about 36 miles of brnnch pipelines to Crowley, Wiley, and Eads. 57. The municipal wat.er supply system would involve 110 unusual construction problems or difficulties in securing rights-<Jf-way. ,58. Construction schedule.-About 10 years would be required to construct the initial development. Early concurrent construction of the Aspen, Twin Lakes; and Pueblo Reservoirs, the Fryingpan- Arknnsll,s tunnel, and sc\-eral eastern slope cann.Is is planned to facili- tate filling the reservoirs. The western slope collection system would be cxpanded gmdually from the transmountain tunnel. All hydro- phmts except Pueblo have been scheduled for simultaneous comple- tion so t.heir operation can be integrnted as R unit. 59. Water Bupp/y.-The first phltse of the Gunnison-Arkansas project (Roaring Fork diversiou) contemplates the a\'erage annual consumptive use of water from the Colorado Ri\.er Basin as follows (measured at points of diversion): Explanation: Acre-fut' Diversion from project collection !l.\'stem oC project water u.. .. __.. _ _ _ 69, 200 Diversion for fish presen'ation purposes_ _.. _ __ _ _.. _ __ __ ____ _ _"_"_ ___ 3.000 T,osses from Aspen Reservoir a.nd consumpth:e losses in collection ~onduit__._________ __. __ __ _ _ _ ____ ____.. ~ ~ ___ _ ___ __ _ _ _. _____ 3, QOO TotaL __ _ __ __ _ _ ______ _ __ _ _ _ ___________ _________ _ _ __ _ ---- 75,200 60. The water to be impo'rtod from the Colorado River watershed isla come out of Colorado's apportionment under the upper Colorad() RIver Basin compact of October 11, 1948. Under t,hat compact, t,h~ State of Colorado is npportioned the consump,tivc use of 51.75 l'er. cent of the water nvaUable for use m the upper Colorado R,vet Basin, after deducting a use of not to exceed 50,000 acre-feet annually