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<br />"7; 'J' <br />...... <br /> <br />Plan of Development <br /> <br />is formed by a concrete-faced earthfil1 dam located about 9 miles <br />northwest of the Narrows Dam site. It is filled from an inlet canal <br />which diverts from the South Platte River. Water stored in the lake <br />is released to the river through an outlet canal and then rediverted <br />to serve the ditch companies and individuals owning Jackson Lake water <br />rights. The Fort Morgan Irrigation District, which owns approximately <br />two-thirds of the rights, diverts its water from the South Platte <br />Ri ver into the Fort Morgan Canal about 6 ,niles ups tream from the <br />Narrows Dan site. The remainder of the rights are delivered through <br />other systems including the Upper Platte and Beaver, Lower Platte and <br />Beaver, and Deuel and Snyder ditches which divert their water down- <br />stream from the Narrows Dam site. <br /> <br />Since the priority date of the storage right is relatively early, <br />May 18, 1901, Jackson Lake is filled to its 35,400 acre-foot capacity <br />and emptied nearly every year. When filled, the lake has a surface <br />area of about 2,500 acres at elevation 4440.0. The surface area of <br />the dead pool is about 700 acres. The dam controls the runoff from <br />approximately 5,730 acres which lie to the north of the lake. However, <br />most of the runoff from this area is intercepted by the Riverside <br />Canal which traverses the west and north sides of the lake. <br /> <br />Irrigation storage and service now provided by Jackson Lake would <br />be transferred to the Narrows Reservoir. The inlet canal, Jackson <br />Lake, and the outlet canal would become Federal facilities for <br />recreation and fish and wildlife enhancement. In the operation of <br />Jackson Lake for these purposes the maximum water surface elevation <br />would be 4436.0. Losses from evaporation and seepage would be replaced <br />by diversions from the South Platte River. <br /> <br />The Fort Morgan Canal diversion dam on the South Platte River <br />and that portion of the canal to Narrows Dam would be inundated by <br />Narrows Reservoir and abandoned. <br /> <br />Some rehabilitation of Jackson Lake Dam would be required to <br />minimize maintenance and eliminate potential and existing safety <br />hazards. Anticipated work includes rel09ating the road from the <br />crest of the dam to the downstream toe, fencing the outlet stilling <br />basin, and raising the beaching slopes and finishing them along the <br />upstream side of the dam. This finishing work has been started by <br />the present owners. <br /> <br />24 <br />