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CHAPTER III ALTERNATIVES Operation and maintenance roads for the middle and east end portions of the Government Highline Canal would be 16 feet wide as in the Stage One portion. This width is needed to accommodate large equipment used to maintain the canal. The relatively smaller west end portion of the Government Highline Canal would require only a 12-foot-wide road because of smaller equipment used to maintain it. The canal would be fenced with wire mesh on the south side and a barbed-wire stock fence on the north side. The cross-drainage ditches would generally be within the north fence. The siphon inlets would be enclosed by 7-foot chain link safety fences. The need for other safety fences would be determined during preconstruction studies. Nets, cables, and safety ladders would be installed immediately upstream of siphons and flumes when the size and location of the structures create a safety hazard. Handrails would be constructed on the operating platforms of the check structures. The Stage Two portion of the Government Highline Canal is divided into three segments--the east end, the middle, and west end portions. East end portion of the Government Highline Canal.--The east end por- tion of the Government Highline Canal begins 1 mile northwest of Palisade and extends for about 11 miles from Price-Stub Ditch Pumping Plant to the Indian Wash drainage shown on the Features Map on page 19. This portion of canal serves privately developed laterals in the Mesa County and Pali- . sade Irrigation Districts. Major waterway structures in this reach in- clude a 50-foot-long siphon under Lewis Wash and a 200-foot-long concrete flume across Indian Wash. A check and wasteway structure would be constructed at Lewis Wash, and a check structure would be added to the inlet of the Indian Wash flume. Two centerline check structures would be required between the Price-Stub Ditch Pumping Plant and Lewis Wash. Indian Wash wasteway will be maintained. Thirty-two lateral and fifteen farm turnouts would be replaced. The initial capacities of the lateral turnouts range from 1 cubic foot per second (cis) to 13 cis, while the farm turnout capacities range from 1 to 5 cis. Middle portion of the Government Highline Canal.--The middle por- tion of the Government Highline Canal extends for 20 miles from Indian Wash to the canal section lined under Stage One. Major existing waterway structures in this reach include a 170-foot-long concrete flume across Leach Creek, a 200-foot flume across a branch of Persigo Wash, a 200-foot concrete flume across Adobe Wash, a 140-foot-long siphon under Little Salt Wash, and a 90-foot siphon under the East Branch of Big Salt Wash. A check and wasteway structure would be constructed at each change in canal capacity at Persigo Wash, Little Salt Wash, and the East Branch of Big Salt Wash. Three other centerline check structures would be added. 23