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<br />1118
<br />
<br />"~~'~.
<br />:>O.'.>'!'"
<br />:-;;f~;.
<br />
<br />Dimensions - thrust block:
<br />Structural height .........................
<br />Structural width. ........... ... ...... ....
<br />Structural )~ngth.........................
<br />Dimensions - eprth embankment dam:
<br />Structural height.."""".""...,,,.,,,
<br />Top width. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
<br />Maximum base width .....................
<br />Crest length. ~............................
<br />Crest elevation. .... .,.,.. .,...... .......
<br />Volwne ................................
<br />SpiHway: Uncontrolled concrete crest in arch
<br />of dlllll.
<br />Cre.tlength........,.,...,...,."..,.., .
<br />Crest elevation...............,..........
<br />Capacity atEt 6826,6.,...,.,....."....,
<br />Outlet works: Two 14~in and one 6~in jet~
<br />flow gates. .
<br />
<br />Diversion Facilities
<br />
<br />BLANCO DIVERSION DAM
<br />
<br />Type: Concrete ogee weir, with embankment
<br />wings .
<br />Loca.tion: On the .Rio Blanco about 16 mi
<br />southeast of Pagos8 Springs, Colo.
<br />Year completed: 1969 .
<br />Dimensions:
<br />Structurai"height....................... .,
<br />Hydranlicheight,..,..".,."....,.,.... ,
<br />
<br />Crest length.:................. ~...... ~..
<br />Crest elevation....................... '...
<br />Volume............................... .
<br />Spillway: Concrete overflow "
<br />Headworks: One ~-ft-squ8J'e ~nd ope 30-in-
<br />square motor-operated slide gatei one
<br />Ill-by Ht and one 5. by 17.f, motor'
<br />operated radial gate.
<br />
<br />LITTLE OSO DIVERSION DAM
<br />
<br />Type: Concrete ogee weir
<br />Location: On the Little Navajo River about
<br />$ mi northeast of Chromo. Colo."
<br />Year completed: 1970
<br />Dimensions:
<br />Height above streambed..................
<br />Hydraulic height .........................
<br />Crest length.............................
<br />Crest elevation..........................
<br />Volume............................... .
<br />Spillway: Concrete overflow
<br />Headworks: One 24oin-square and one 72-in~
<br />square motor-operated slide gate.
<br />
<br />080 DIVERSION DAM
<br />
<br />Type: Concrete ogee weir with etpbankment
<br />wings
<br />Location: On the Navajo River about 6 mi
<br />east of Chromo, Colo. "
<br />Yeat-completed: 1970
<br />Dimensions:"
<br />Structural height .........................
<br />Hydraulic height .........................
<br />Crest length .............................
<br />Crest elevation..........................
<br />Volume.............................. ..
<br />Spillway: Concrete overflow
<br />Headwork:s: One 36-jn-square. one 48-in.
<br />square, and one 72.in'square motor-
<br />operated slide gate and ~me 13- by 10-11
<br />motor-operated radial gate.
<br />
<br />San Juan-Chama Project
<br />
<br />108 ft
<br />78,5 ft
<br />280 It
<br />144 ft
<br />25 ft
<br />289 ft
<br />673 ft
<br />6844.0 ft
<br />2()O,()OO ydil
<br />llO ft
<br />6826.6 ft
<br />2,023 ft3/s
<br />
<br />41 ft
<br />17.9 ft
<br />2()o ft
<br />7867.0 ft
<br />23,360 yd'
<br />
<br />16.2 ft
<br />14.3 ft
<br />295 ft
<br />7756.6 ft
<br />7,400 yd'
<br />
<br />51 ft
<br />23,5 ft
<br />790 ft
<br />7617.7 ft
<br />32,l()o yd'
<br />
<br />Carriage Facilities
<br />
<br />BLANCO TUNNEL
<br />
<br />Location: Rio Blanco southerly to Little
<br />Navajo River.
<br />Construction period: 1965.69
<br />Length .....""...."""".....",,,,,
<br />Capacity............................. ..
<br />Cross section: Circular....................
<br />Diameter"lining: Unreinforced concrete......
<br />
<br />050 T~NNEL
<br />
<br />Location: Little Navajo River 8Ou~easterly
<br />to Navajo River.
<br />Construction period: 1966-70
<br />Lengih ........"......."".""....,,,
<br />Capacity ... ....., ".. ....,........, "..
<br />Cros$8ection: Circular....................
<br />Diameter lining: Unreinforced concrete. . . . . .
<br />
<br />AZ01'EA TUNNEL
<br />
<br />Location: From Navajo River southeasterly
<br />I1nd under the Continental Divide to
<br />Azotea Creek.
<br />Construction period: 1964-70
<br />
<br />Length ...".....".....'....."..,.....
<br />Cap~cjty ................. ..............
<br />Cross section: Circular....................
<br />Diameter lining: Unreinforced concrete. . . . . .
<br />
<br />LI1TLE 050 SIPHON
<br />
<br />Location: Between Blanco and Oso T-unnels-
<br />carries water under the Little Navajo
<br />River.
<br />Construction period: 1966-70
<br />Type: Precast concrete pipe
<br />Length",,,,,..,,..:..,....,..,,...,, "
<br />Diameter.............................. .
<br />Capacity.............................. .
<br />
<br />. 050 SIPHON
<br />
<br />Location: Between 080 Tunnel and Azotea
<br />Tonner-carnes water under the Navajo
<br />River.
<br />Construction period: 1966-70
<br />Type: Precast concrete pipe
<br />
<br />LengIh ....,.....,,,,,,,.,,,.......,"..
<br />Diameter.................... .,..........
<br />Capacity.............................. .
<br />
<br />8.64 mi
<br />520 ft'l.
<br />103 in
<br />6.5 in
<br />
<br />5.05 mi
<br />550 ft'l.
<br />103 in
<br />6.5 in
<br />
<br />12.8 mi
<br />950 ft'l.
<br />131 in
<br />8 in
<br />
<br />345 ft
<br />96 in
<br />520 ft'l.
<br />
<br />899 ft
<br />96 in
<br />550 ft'l.
<br />
<br />AZOTEA CREEK AND WILLOW CREEK CONVEYANCE CHANNELS
<br />
<br />Location: Sonthwest of Chams, N. Max. on
<br />Azotea Creek between outlet of Azotea
<br />Twmel and -confluence of Willow Creek
<br />and along Willow Creek to the head of
<br />Heron Reservoir.
<br />Type: Open channel with three baffled
<br />concrete drop structures
<br />
<br />Length ....,'..,,,".....,,,,..,,.",,..
<br />Width..,.,.,.,."".,.".",.,.",."..
<br />Side slopes................. ~.......... .".
<br />
<br />11 mi
<br />28.65 ft
<br />2:1
<br />
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