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//Ii III " 16 a C) ~ t. ..\ CJi 00 WILLOW CREEK FEEDER CANAL Location: From Willow Creek Dam gener- ally east to Willow Creek Pumping Plant, then to Granby Reservoir. Construction period: 1951-53 Length ............... . . . . . . . . . . . . . . . . . . Capacity ............................... Typical maximum section in earth: Bottom width ........................... Side slopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Water depth ............................ Typical maximum section, concrete lined: Bottom width ........................... Side slopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Water depth... .. .... .. .. . .,. . .. .. . ... . . Lining thickness . . . . . . . . . . . . . . . . . . . . . . . . . GRANDY PUMP CANAL Location: From Granby Pumping Plant to Shadow Mountain Lake. Construction period: 1949-50 Length .......... . . . . . . . . . . . . . . . . . . . . . . . Capacity ............................... Typical maximum section in earth: Bottom width . . . . . . . . . . . . . . . . . . . . . . . . . . . Side slopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Water depth ... . . . . . . . . . . . . . . . . . . . . . . . . . Typical maximum section, gravel lined: Bottom width ........................... Side slopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Water depth ............................ Lining thickness . . . . . . . . . . . . . . . . . . . . . . . . . ALVA B. ADAMS TUNNEL Location: From Grand Lake east to a point on Wind River about 4.5 mi southwest of Estes Park, Colo. Construction period: 1940-47 Length ................................. Capacity ............................... Cross section: Circular Diameter ............................... Lining: Concrete ASPEN CREEK SIPHON Location: From Parshall flume section at East Portal' Reservoir to Rams Hom Tun- nel. Construction period: 1947-48 Length ................................. Capacity ............................... Diameter ............................... RAMS HORN TUNNEL Location: End 01 cut-and-cover flume sec- tion Irom A.spen Creek Siphon northeast to penstock gate structure for Marys Lake Powerplant. Construction period: 1946-47 Length ................................. Capacity ............................... Cross section: Horseshoe Diameter ................ . . . . . . . . . . . . . . . Lining: Concrete PROSPECT MOUNTAIN CONDUIT Location: From outlet in Marys Lake Dike No. 1 eastward to Prospect Mountain Tun- nel. Colorado-Big Thompson Project Description: Reinforced-concrete pressure conduit (covered) Construction period: 1947-49 Length ................... . . . . . . . . . . . . . . Capacity ............................... Diameter ............................... 3.4 mi 400 It3/s PROSPECT MOUNTAIN PRESSURE TUNNEL 14 It 1.5:1 6.9 ft Location: From Prospect Mountain Con- duit northeast to surge tank and Estes Powerplant penstock gate structure. Construction period: 1946-48 Length ................................. Capacity ............................... Cross section: Circular Diameter ............................... Lining: Concrete 5 It 1.5:1 5.2 It 4 in 1.8 mi 1,100 ft3/S OLYMPUS SIPHON Location: From Olympus Dam to Olympus Tunnel. Construction period: 1950 Type: Monolithic concrete pipe Length ................................. Capacity ............................... Diameter ............................... 20 ft 2:1 10.5 ft OLYMPUS AND POLE HILL TUNNELS Location: From Olympus Siphon east to Pole Hill Canal. The tunnels are connected by a short length of covered conduit. Construction period: 1949-52 Length (Olympus, 1.8; Pole HilI, 5.4) . . . . . . . Capacity ............................... Cross section: Horseshoe Diameter ............................... Lining: Concrete 20 ft 2:1 10.5 ft 3-4.5 ft 13 mi 550 It3/s POLE HILL CANAL Location: From end of Pole Hill Tunnel to Pole Hill Powerplant penstock gate struc- ture. . Construction period: 1952 Length ................................. Capacity ............................... Typical maximum section, concrete lined: Bottom width ........................... Side slopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Water depth. .... " . ., .. .. . . . .. ... .' ... . Lining thickness . . . . . . . . . . . . . . . . . . . . . . . . . Typical maximum section, bench flume: Bottom width ........................... Water depth ............................ Lining thickness .. . . . . . . . . . . . . . . . . . . . . . . . 9.75 It 1.3 mi 550 ft>! s 10.75 It 1.3 mi 550 ft3/s RA'ITLESNAKE SIPHON AND TUNNEL Location: From Pole HilI Powerplant Alter- bay east to Pinewood Reservoir. Construction period: 1950-52 Length. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (Outlet through dam, 9. 75-It-diameter con- crete siphon, 274 ft long, crosses creek bed). Capacity ............................... Cross section (tunnel): Horseshoe Diameter .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Lining: Concrete 10 ft BALD MOUNTAIN PRESSURE TUNNEL Location: From Pinewood Reservoir east to surge tank, Flatiron Powerplant penstock g-ate structure. 0.6 mi 1,300 ft3/S 12.5 It l.l mi 1,300 ft3/s 12.5 ft 0.8 mi 550 ft./s 10.75 It 7.2 mi 550 ft'/ s 9.75 It 0.5 mi 550 It3/s 7 ft 1.25: 1 7.4 It 4in 16.3 It 7.4 It 8 in 1.7 mi 550 ft3/S 9.75 It