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0618 :, 10 Dimensions: Height above streambed..........,....... Top width. . . . . . . . . . . . . . . . , . . . . . . . . . . . . . Maximum base width. . . . . . . . . . . . . . . . . . . . . Crest length............................. Crest elevation .......................... Total volume (embankment) . . . . . . . . . . . . . . . Spillway: Uncontrolled concrete chute at the right abutment. Crest elevation .............. '........... Capacity at El. 7181.8 . . . . . . . .. . . . . . . . . . . . Outlet works: A lO.ft-diametcr concrete-lined tunnel through the right abutment, a gate chamber for a 5- by 6-ft high-pressure gate, and an 11-ft concrete-lined horseshoe tunnel with a 76-in-diameter steel pipe con- trolled by two sets of 3.5- by 4-ft tandem gates. Capacity at El. 7781.8 . . . . . . . . . . . . . . . .. . . . Auxiliary outlet works: A 6.ft.diameter eoncrete.lined tunnel, a chamber for two 2.5. by 3.0-ft tandem slide gates, and a concrete. lined 5. by 6.ft flat.bottomed tunnel. Capacity at El. 7766 . . . . . . . . . . . . . . . . . . . . . . SUGAR LOAF DAM Type: Earth and rockfill Location: On the Lake Fork of the Arkansas River, approximately 5 mi west of Lead- ville, Colo. Construction period: 1965-68 Reservoir, Turquoise Lake: Tot~1 capacity to El. 9869.4 . . . . . . . . . . . . . . . . Active capacIty. . . . . . . . . . . . . . . . . . . . . . . . . . Surface area. . . . . . . . . . . . . . . . . . . . . . . . . . . . . Dimensions: Height above streambed..... ............. Top width.............................. Maximum hase width..................... Crest length ............. ............ .... Crest elevation .......... ................ Total volume (embankment) . . . . . . . . . . . . . . . Spillway: Uncontrolled spillway entrance into concrete conduit. Crest elevation ............. ............. Capacity I\t El. 9872.8 . . . . . .. .. . . . . . . . .. . . Outlet works: An Il-ft concrete conduit, controlled by a 1- by 6-ft high-pressure gate and four 3.5-ft-square high-pressure gates. Capacity at El. 9872.8 . . . . . .. . . . . . . . . . . . . . PUEBLO DAM Type: Earlhfill dam with massive concrete buttresses with overflow section Location: On the Arkansas River 6 mi west of Pueblo, Colo. Construction period: 1970- 75 Reservoir. Pueblo: Total capacity to El. 4898.7................ Active capacity. . . . . . . . . . . . . . . . . . . . . . . . . . Surface area ............................. Dimen8ion8: Height above streambed.................. Top width. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Maximum base width..................... Cre8tlength............................ . Cre8t elevation ........... . . . . . . . . . . . . . . . Total volume: Concrete.............................. . Embankment ........................... Excavation .......,..........."",..... FryingpBn-ArkBRSBS Project 285 It 30 It \,453 It 1,042 It 7788.0 It :~. 74.).:!OO yd' 7766.0 It 5,540 1t3/S 1,810 ft3/s 600 1t3/S 129,440 acre-ft 120,480 acre-ft 1,788 acres 135 It 30 It 810 It 2,020 It 9879.0 It I.H:t~. 700 yd' 9869.4 It 2,920 ft3/s 1,120 It'/, 357,678 acre-ft 327,323 acre-ft 5,664 acres 191 It 30 It 1,040 It 10,200 It 4925.0 It 540,000 yd' 12,000,000 yd' 2,800,000 yd3 Spillwuy: An uncontrolled, overflow type spill- way crest is provided with converging training;wall and a concret(' flip bucket, Crestleng(h.."",............"",.... . Crest clev~tion "............",......... Capacity a:t El. 4919..........,......"", Outlet wor~s: Has three 6- by 6.5.ft steel- lined copcrete conduits located in the spillway! buttresses 9, II, and 13, with one 13.4- by' 11.I-ft bulkhead gate and six 6.5-by 6.0-ft high-pressure slide gates. Also one 4-ft~sqtlare stainless steel-lined concrete conduit located in the river gorge area with a 9.8- by 7.4-ft bulkhead gate and two 4-ft- square ~igh-pressure slide gates. Near but- tress 8 a~e four mortar-lined steel conduits which converge to one conduit with only one slidipg bulkhead gate, 5.3 by 6,4 ft, and a sipgle level conduit intake located in buttress!7. There are ,three 4-ft-diameter conduitsl, and one 4-ft-diameter concrete conduit ~ith one sliding bulkhead gate, 8.6 by 8'.9 ft, and four 4-ft butterfly gates, plus a 9.5- by 8.4-ft concrete horseshoe- shaped Gonduit with four 3.5-ft-square high-pressure slide gates. Total cap~city of the seven outlet works, . . . . . , MT. ELBEln FOlUWAY DAM , i Type: E",~hlill Location: ~n Lake County approximately 12 mi soutHwest of Leadville, Cola, Construction period: 1977- (Under construction) Reservoir, Mt. Elbert Forebay: Total capacity to El. 9645,7 . . . . . . . . . . , . " . . Active capacity"................"...... Surface ar~a . , , , , . . . . . . . . . . . . . . , . , , , . . . . . Dimensions: Structuralpeight.,.............."", .... 'rop width:..,..,.,..,........",."..... Maximumlbase width. , . . . . . . . . . . . . . . . . . . . Crest leng~h..,.",..,............., ..... Crest elevation. . , , . . . . , . . . . . . . . . . . . . . . . . Total volu'me ..,.,....,.,............... Inlet-outlet works: A concrete inlet-outlet structure which separates into two 15-ft steel peri-stock pipes. Capacitya:t EJ. 9645.7 . . . . . , . . . , , , .. . . . . . . TWIN LA~ES DAM Type: Ear~liIl Location: bn Lake Creek approximately 13 mi 8~uth of Leadville, Colo. Construction period: 1978- (Under con- struction) Reservoir,'Twin Lakes: Tot~l cap&cit.r to El. 9200 . . . . . . .. . . . . . . . . . Active caRaclty, .............. ........... Surface ar~a . . . . . . . . . . . . . . . . . . , . , . . . . . . . . Dimensiorls: Height a~ve streambed .............. .... Top widt:l1............. ............ ..... Maximum base width ......"............. Crest length ..............,. ............. Crest elevtttion ............... ........... Total voluhte: Embankm'ent ,.... ................ ...... Excavation...... .... .... ........., ..... Spillway: Uncontrolled spillway entrance into a concrete conduit. (40-ft-diameter mornin~ glory) 550 ft 4H98.7 ft 191,500 It'/, 5,767 ft3/S 11,530 acre-ft 7,160 acre-ft 279 acres 92 It 30 It 500 It 2,600 It 9652.0 It 3,101,207 yd' 3,590 ft3/S 141,000 acre-ft 68,000 acre-ft 2,805 acres 53 It 30 It 300 It 3,150 It 9210,0 It 624,000 yd' 590,000 yd'