<br />t :.
<br />
<br />PBRTIND'l' DATA
<br />
<br />LOCATION - Trinidad dam is on the purgatoire River at river mile 160.5 and 3.2
<br />miles upstream from the city of Trinidad in Lae Animas County, Colorado.
<br />Latitude: 37- 08' 27ft Longitude: 104- 33' 03ft
<br />
<br />DRAINAGE AREA - The area abov~ Trinidad dam is 671 square miles. One inch of
<br />runoff equals 35,787 acre-feet. The purgatoire River at Trinidad is 749 square
<br />miles and above the mouth is 3,505 square miles.
<br />
<br />LAND ACQUISITION - All lands are fee or easement below elevation 6263 feet. Land
<br />in fee simple is 3,542 acres. Land with flowage easements is 191 acres.
<br />
<br />DAM ~ - The rolled earth fill embankment is 6,610 feet long with crest
<br />width of 24 feet. Main dam slopes are 3:1. Maximum height above streambed is 200
<br />feet. The embankment has 3 zones: upstream section of pit-run gravel, downstream
<br />section random fill, and central impervious core. There is a 3 foot high parapet
<br />wall along the upstream side of the dam.
<br />
<br />OUTLET WORKS - The outlet works is in the right abutment and comprises an intake
<br />structure with tower, a ten foot circular conduit, and a filp bucket. Control
<br />is with tandurn 5 x 9 slide gates. Conduit slope is 0.0112. Total length is
<br />1,500 feet.
<br />
<br />SPILLWAY - There is a service spillway and two emergency spillways. The service
<br />spillway is a notch in the north emergency spillway. It has a width of 40 feet
<br />with a crest elevation of 6243 feet. The north emergency spillway is 1,000 feet
<br />wide cut in natural rock with a crest elevation of 6258 feet. The south
<br />emergency spillway is a 710 feet wide cut in natural rock with a crest elevation
<br />of 6258 feet. It has a 2 foot high fuse plug. The spillways are not gated.
<br />
<br />RESERVOIR FEATURES
<br />
<br />DISCHARGE
<br />(c1&)
<br />
<br />TOP Of PARAPET WALL
<br />TOP 01 EMBANKMENT
<br />KAXI~ POOl
<br />TOP OF FLOOD CONTROl
<br />. POOl
<br />
<br />SPillWAY CREST
<br />SERVICE SPILLWAY CREST
<br />
<br />IRRIGATION POOL
<br />TOP 01 SEDtMElCT POOl
<br />
<br />RECREATION POOL
<br />:..ZERO nOAAGE
<br />
<br />'. CONDUITIIlVEJlT. ... :'.
<br />(JllAlWEG ........ ..,.:.
<br />
<br />ELEVAT I 011
<br />(ft NVGD)
<br />
<br />6284 .00
<br />6281.00
<br />6279.30
<br />6260.00
<br />
<br />6258.00
<br />6243.00
<br />
<br />6230.00
<br />6214.59-
<br />
<br />'111.&6*
<br />
<br />'114.90
<br />6095.00
<br />...........:.6081.00
<br />
<br />AREA
<br />(ecru)
<br />
<br />2700
<br />2601
<br />Z554
<br />Z067
<br />
<br />Z016
<br />1696
<br />14Z1
<br />1179
<br />.. 563
<br />o
<br />D
<br />
<br />
<br />CAPACITY
<br />(ecrt-ft)
<br />
<br />INCREMENTAL .' ...TOTAL
<br />
<br />7,9~9
<br />4,382
<br />44,489
<br />4,083
<br />
<br />181,283
<br />173,334
<br />.'168,952
<br />'24~463
<br />
<br />TOTAL
<br />RUNOFF
<br />( inches)
<br />
<br />5.06
<br />4.84
<br />4.71
<br />3.48
<br />
<br />>3.36
<br />2.58
<br />.... .. ...
<br />./:Z.01........
<br />1.45.
<br />..0.45 .......
<br />
<br />.. ."CalOUIT .' . .SPILL~Y
<br />
<br />. . ......,.... . .
<br />... .. ..... .
<br />.. ... ...... .......
<br />... -.... .......
<br />
<br />"6,000:(494,000
<br />5',;00:'::0'8,600 "
<br />
<br />5,600:.::.:" .::8,800
<br />5,300: 0
<br />..
<br />.....
<br />.. . ........... .... .... .
<br />:'5,000 .../::;::::)}:::.
<br />.: .'. .4, 800:.,:),.,:-=:
<br />'/3,800..:,.\.:) ..
<br />':/::: -200://::' )(' ...
<br />
<br />..... ... ...
<br />. . . .. .. ...... ..
<br />..... ... ... .
<br />...........: ..
<br />
<br />.. .... . .....
<br />. .. .. . . . . . . . . ., .
<br />..... ..........
<br />... .. ..... .......
<br />::. t... ....... ..... . ~ ." .:::.:.:;.::.:::;;;:::;~;.::::::;~:;::::;::::>;:;::;::;::;::;:::'.-::;:':'::::;.::: .....
<br />
<br />A
<br />
<br />Inftf.l .~Iment rt.erve w.. 39,000 .crt-feet. Sediment .pece remaining .fnet the l..t .~fment .urvty (June
<br />1994) I. 36,284 .crt.fllt. Additional project dlt..I. gfven In E~Iblt A, Supplement.ry Pertfnent D.t.. '
<br />
<br />* Stor.ge volume dlct.tt. top of pool which doel not IKectly correl.tl with. .peclflc eltv.tlon.
<br />
<br />.... .27,801 ...... 120,380
<br />
<br />.... ..20,328.... .92,579 ."
<br />
<br />20,000 :72,251 ..
<br />
<br />....36,284 ....: 52,251 .
<br />
<br />.15,967..15,967....., ..
<br />:'. :'.:0 ........ . .:.......0
<br />
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