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voir to Lake Fork Creek just upstream from Turquoise Reservoir. (2) Lake Fork Creek from Turquoise Reservoir to the Arkansas River, (3) the Arkansas River to a diversion point just upstream of the mouth of Clear Creek, (4) a diversion dam across the Arkansas River with intake facilities to divert the water into a 66 inch gravity pipeline which roughly parallels the Arkansas River for some 6.1 miles and connects, (5) to the Otero Pump- ing Station where the pumps lift the water over Trout Creek Pass, and (6) a 66 inch delivery conduit extending from Otero Pumping Station some 44 miles in an easterly direction over Trout Creek Pass and terminating some three miles south of the City of Denver's ElevenmiJe Canyon Reservoir. Aurora's share of the water is discharged through a 28 inch pipeline into Eleven- mile Canyon Reservoir from which it is conveyed by the South Platte River to near Sheep Mountain. At this point the water is diverted from the river and transported through pipelines and tunnels to the 1.750 acre-feet Rampart Reservoir. The water is con- veyed from Rampart Reservoir to the City's treatment facilities through a 42 inch and 40 inch pipeline 22 miles long_ Rampart Reservoir will be augmented in 1974 by the 2,750 acre-feet Quincy Reservoir. The Colorado Springs water is transported by a 26 mile long 48 inch pipeline into the City's 40,000 acre-feet Rampart Reservoir, thence by pipeline to the City's Northfield and Pine Valley water treatment plants. 4. Completed Downstream Storage Downstream storage for the City of Aurora's share of Homestake water is presently provided in the E levenmi Ie Canyon and Chees- man Reservoirs under an agreement with the Denver Water Board (DWB). Eventually the water could be stored in Wildcat Reser- voir which is planned for construction on the South Platte River upstream from Cheesman Reservoir. As an alternative plan, Aurora is presently considering a storage site near Spinney Moun- tain as shown on Exhibit 1. Downstream storage for the Colorado Springs Homestake water is provided principally by the 40.000 acre. feet capacity Rampart 12 Reservoir located about five miles east of Woodland Park. Colora- do. However, water can also be transferred to the City's Crystal Creek and North and South Catamount Reservoirs on the north slope of Pikes Peak. I I B. PROPOSED ALTERNATIVE EXTENSIONS OF HOMESTAKE COLLECTION SYSTEM o p 'p ,? I ncreasing water demands require that additional water sources be developed. Thus, the Cities propose to construct Phase 2 of the Homestake ~ivision Collection System. This contemplates devel- opment of East Cross Creek, Cross Creek, West Cross Creek, Fall Creek, Whitney Creek, Peterson Creek, and other unnamed minor streams. These creek drainage basins comprise the Project Area bounded generally by the Eagle River, the Continental Divide, the Sawatch Range and various ridge lines as shown on Ex- hibit 2. I I I I Nine alternative plans investigated by the Cities are described hereafter. Eight of these plans are contained essentially within the Project Area. The ninth plan is remote from the Project Area as shown on Exhibit 1. Alternative Plans A, B, and C provide for gravity diversion of water; Plan D combines gravity and pumping; and Plans E, F. F-1, and F-2 combine gravity, storage, and pumping. Plans A through E contemplate construction by the Cities alone, although Plan E would require acquisition of a reservoir site from the Colorado River Water Conservation Dis- trict (CRWCD); Plans F through G would require varying degrees of joint undertaking with the CRWCD and/or the Denvef"Water "- Board (OWB). Both the CRWCD and DWB own rights to Eagle River tributary waters although the rights in both c~ses are junior to those of the Cities. I I I I I Under Plans A, B, C, and D, Eagle-Arkansas waters would be diverted by gravity across Tennessee Pass into Tennessee Creek, thence into the Arkansas River to flow to existing Otero Pump- ing Station. there to be lifted over Trout Creek Pass, Under ."", ..:.r- I I