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I. f I . . oo~,s~ MI~RO RUllO JUN l I 9J3 REMARKS CONTINUATION ) ThP Cheyenne Water Project (of which this epplicetion i. . pert) io an txchana' My.tem whoreby wator 18 diverted from the Littlo Snake drainoll ond cQnveye~ across the Continental Divide into Hog Pa~k Creek. a tributary ot tho Grand !bca.p~nt River, which is tributary of the North Placte Rive~, where it serve. .. replacement water for diversions and 9torase in the Dousla. Creek drainagl. also tributary to the North Platte River. which Doullas Creek diver- aions a~e conveyed via the Douslaa Creek Pipeline for ultimate use within tho municip.l watet system of the City of Cheyenne. Th. controlling nppropriations involved in the Cheyena8 Water Project are the dir,ct flow debts diverting from the Llttl/A Snake River drainage (Little Snake Diversion Pipeline, Permits No. 22117 through 22134; 23193 through 23199; and 26243 through '26261). All other permits involved are mechanisms for effec- tuatinl~ the" exchange made possible by the exercise of the Little Snake direct flow dahts. Regulation of the water diverted and stored by the Project w.Lll be accomplished by limiting the amount of water diverted under the previously cited Little Snake direct flow rights to whatever 1s available to thoBe rights in priority, up to .the aggregate amo~~ of the individual appropriations. This water will be conveyed thr.ough the Little Snake Diversion Pipeline to the tunnel beneat~the Continental Divide and thence via the Hog Park Drop into Hog Park Crdek ~ove Hog Park Reservoir. The qua~ttty'of water diverted from the Little Snake drainage and delivered to Hog Park Creek will be continuously 1Ileasured and accounti!d for. After entering Hog Park Creek, -the imported Little Snake water will ftilw downstream into Hog Park Reservoir where it will either be stored or relealea downstream, and ultimately will flow into the North Platte River via Hog Par~ Creek and the Grand Encampment River. This imported Little Snake water wilt seJve as a replacement to the North Platte River of water diverted or stored Jrom Douglas Creek as described hereinafter. .4SSIl tba enlarged Hog Park Reservoir (Permit No. 7235 Res., and T.F. No. 23 4/188) ~ll,be operated primarily to even out the releases to Hog Park Creek under tl1e exchange. The U. S. Forest Service has lim.ited the .eJ.Ount of imported water tbat c&n421 released 1ntq'Hog Park Creek to ~o more than~ c.f.s. Hence whea mo~e than~c.f.s. is being brought into Hog Park Creek from the Little Snake d~ainage. the excess will be stored in Hog Park Reservoir. This stored water ~ll be released in accordance with release schedules prepared by the City of Chey~nne and approved by the State Engineer and the U. S. Forest Service. It is anti~ipated that most of the stored water in Hog Park Reservoir will be release~ during the nonirrigation $e8S0n, October through Ap41l. Hog Park Reservo~r will also be operated to enhance recreational use of the reservoir iosofaias practicable. i.e., the reservoir will be kept at high levels during tbe. rec~eation season (June through September), and lower levels during the balance' of the year. . I. ,1 Releases from Hog Park Reservoir storage will be made to provide replace- ment wa~er to the North Platte River for water diverted or stored from Douglas Creek ~der the exchange arrangement described here~efore. A balance between the two; sides of the exchange will be accomplished ~a11~ in concert witb the requir~nts of the State Engineer. Releases may be made from Hog Park Reservoir storage io excess of the rate of dlve~sion or storage from Douglas'Creek, with such excess releases being restor~ 1n- Seminoe Relerv01rii~:~tablish an "Advance Payback Account" for the purpol~of accomplishing the balancing between the two sides of the exchange. ~ Douglas Creek side of thi~;ahange (Permits No. 22094 through 22116' 6536 Rep., 6888 Res., and T.F. No.'13 5/163) will be operated so as to pr6vlde water too meet the demands of the Cities of Cheyenne and Laramie within the limits of availability of replacement water from the Little Snake drainage. Wate~ ~ver~ed from the Douglas Creek drainage will be replaced ~th imported water ,from the Little Snake drainage. 'i' ., " ~ enlarged Ro~ I~~~~servoir on Douglas Creek (Permits No. 6536 Res., 6888 R~8'1 and T.r. No. IJ~/163) will be operated so as to store water when both w~ter and storage space are available and the water supply in the North Platte -laver between the mouth of Douglas Creek and Seminoe Reservoir is ade- quate to fill all prior appropriations. No more water will be stored in Rob Roy Reservoir than is available for replacement from the LHt1e Snake. side of Penp.t No. 30893 Pose No.123 .L " 1 ;;: _:;j. ,!le,,,, l;t.oJ;M'-"'^"",,,.....-;'""~ " ",h"