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<br />Fryingpan-Arkansas Project
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<br />5
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<br />chamber to the river outlet control house where two 6.5-
<br />by 8.0-foot high-pressure gates will be located. A chute,
<br />stilling basin, and a 400.foot-long outlet channel will lead
<br />to Lake Creek. The Otero Canal will be served by a wye-
<br />junction structure appurtenant to the outlet works,
<br />upstream from the river outlet control house. This wye-
<br />junction structure will also serve Homestake's Otero
<br />intake pipeline to the Otero Pumping Station.
<br />
<br />Clear Creek Dam and Reservoir
<br />
<br />Clear Creek Dam and Reservoir will be located on Clear
<br />Creek a short distance from its confluence with the
<br />Arkansas River. The dam will be an earth and rockfill
<br />embankment with a crest length of 2,200 feet and will
<br />have a height of 75 feet above streambed. There is an
<br />earthfill dike with a crest length of 600 feet on the north
<br />side of the lake. The Pueblo Board of Water Works has
<br />storage rights of 11 ,440 acre-feet in Clear Creek Reser.
<br />voir, and the reservoir will act as an afterbay for the
<br />Otero Powerplant. The spillway will be a combined con-
<br />crete spillway and outlet works structure. It will have a
<br />gated inlet structure, a concrete chute passing under U.S.
<br />Highway 24, and a stilling basin and channel leading to
<br />the Arkansas River.
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<br />The Collection System
<br />
<br />The North and South Side Collection Systems are located
<br />at approximately 10,000 feet elevation. The facilities are
<br />designed to divert and carry water from the Fryingpan
<br />and Roaring Fork River Basins to the inlet portal of the
<br />Charles H. Boustead Tunnel. This tunnel transports
<br />water from the collection system through the Continental
<br />Divide to the Arkansas River Basin.
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<br />The North Side Collection System is designed to divert,
<br />collect, and transport an average of 18,400 acre-feet of
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<br />Pueblo Dam
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<br />water annually through facilities of the Mormon, Carter,
<br />Ivanhoe, Granite, Lily Pad, North, Cunningham, Middle
<br />Cunningham, and South Cunningham Creeks.
<br />
<br />The South Side Collection System is designed to trans-
<br />port an average of 50,800 acre-feet of project water an-
<br />nually from the Fryingpan and Roaring Fork River
<br />Basins. Facilities located on Hunter, Midway, and No
<br />Name Creeks will collect and divert water from Sawyer
<br />and Chapman Creeks, the South Fork of the Fryingpan
<br />River, and the main stem of the Fryingpan River
<br />downstream of Marten Creek.
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<br />North Side Collection System
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<br />Carter Tunnel: Carter Tunnel will be the first collection
<br />tunnel on the North Side Collection System. Water will
<br />be diverted into the tunnel by the Carter Diversion Dam
<br />through the 300-foot, 42-inch Carter Feeder Conduit to
<br />the inlet of the Carter Tunnel. The North Fork Diver.
<br />sion Dam will be a drop-inlet structure that will divert
<br />North Fork Creek water into the Carter Tunnel by the
<br />280-foot-long North Fork Feeder Conduit. Carter Tunnel
<br />is 0.54 mile long and has an 8-foot horseshoe cross sec-
<br />tion with a capacity of 130 cubic feet per second. Water
<br />from Carter Tunnel will flow to the Mormon Conduit.
<br />
<br />Mormon Tunnel: The Mormon Creek diversion structure
<br />will be connected to the intake portal of the Mormon
<br />Tunnel by the Mormon Feeder Conduit. The conduit
<br />will be a 250-foot-long structure, including a Parshall
<br />flume measuring device. The tunnel is 1.4 miles long,
<br />with an 8.25-foot horseshoe-shaped section having a
<br />capacity of 190 cubic feet per second. The water from
<br />Mormon Tunnel will flow to the Cunningham Tunnel.
<br />
<br />Cunningham Tunnel: The North Cunningham, Middle
<br />Cunningham, and South Cunningham diversion struc-
<br />tures will be connected to the Cunningham Conduit by
<br />feeder conduits which extend to the Cunningham Tunnel.
<br />The length of the three feeder conduits is 2,700 feet, and
<br />the Cunningham Conduit is 4,170 feet long. The Cun-
<br />ningham Tunnel is 2.86 miles long and has a horseshoe
<br />shape of two sizes: 8.75 and 7.5 feet. The capacity is 270
<br />cubic feet per second. The Cunningham Tunnel flows
<br />into the Nast Tunnel.
<br />
<br />Nast Tunnel: Ivanhoe Diversion Dam diverts water from
<br />Ivanhoe Creek and the Cunningham Tunnel through the
<br />Ivanhoe Creek crossing into the inlet of N ast Tunnel.
<br />The Granite Diversion Dam diverts water through the
<br />Granite Siphon to the Granite Adit, which drops the flow
<br />into the Nast Tunnel. The Lily Pad Diversion Dam
<br />drops the flow into Nast Tunnel. Nast Tunnel is 3 miles
<br />long, with a circular-shaped section with two diameters:
<br />7.67 and 9.33 feet. The capacity of the tunnel is 360
<br />cubic feet per second. The flow is conveyed to the
<br />Charles H. Boustead Tunnel by the Fryingpan Conduit,
<br />which is 2,481 feet long and 84 inches in diameter.
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