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<br />001093
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<br />Analysis ~ Annual ~
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<br />The simplest ana~Bis which can be made relating to any stream flow is a summary
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<br />of annual quantities in acre-feet and with simple assumptions relating to the operation
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<br />of the stream. Such an ana~sis has been made for the Blue River with the assumption
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<br />that diversions by Denver and Colorado Springs would take the entire flow of the Blue
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<br />and its tributaries at Dillon. A second assumption is made that useable Green Mountain
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<br />storage capacity, at spillway level, is 146,900 acre-feet. The'~ollowing tabulation
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<br />shows the ana~s1s on an annual basis from 1938 to 1951 inclusive.
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<br />1938
<br />39
<br />40
<br />41
<br />,42
<br />43
<br />44
<br />45
<br />46
<br />47
<br />48
<br />49
<br />50
<br />5l
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<br />Blue River
<br />at
<br />Green Mt.
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<br />458,900
<br />364,600
<br />272,500
<br />332,700
<br />373,800
<br />288,800
<br />281,200
<br />312,9oo
<br />320,000
<br />424,500
<br />401,500
<br />393,800
<br />)77 ,900
<br />474,000
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<br />Avge. 362,650
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<br />Blue Riv.
<br />at
<br />Dillon
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<br />55,880
<br />77,050
<br />48,410
<br />70,520
<br />77 ,900
<br />77,210
<br />62,590
<br />74,860
<br />73,620
<br />l08 , 400
<br />93,390
<br />94,820
<br />71,150
<br />102,000
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<br />77,700
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<br />Ten Mile
<br />at
<br />Dillon
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<br />97,360
<br />81,650
<br />53,060
<br />67,OlO
<br />76,580
<br />65,850
<br />49,480
<br />82,210
<br />78,270
<br />112,200
<br />93,980
<br />94,440
<br />86,070
<br />114.100
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<br />82,300
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<br />TABIE I
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<br />Snake Riv.
<br />at
<br />Dillon
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<br />6l,940
<br />42,320
<br />27,220
<br />34,380
<br />39,890
<br />40,400
<br />36,040
<br />42,260
<br />30,490
<br />56,820
<br />43,750
<br />45,960
<br />34,900
<br />70,470
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<br />43,350
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<br />Total
<br />Available
<br />for Storage
<br />at Dillon
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<br />215,180
<br />201,020
<br />128,690
<br />171,910
<br />194,370
<br />183,460
<br />148,110
<br />199,330
<br />182,380
<br />277,420
<br />23l,120
<br />235,220
<br />192,120
<br />286,570
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<br />203,350
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<br />Remainder
<br />Available
<br />for Storage
<br />at Green Mt.
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<br />146,900
<br />146,900
<br />1.43,810
<br />1.46,900
<br />146,900
<br />105,340
<br />133,090
<br />113,570
<br />137,620 .
<br />1.46, 900 ,~
<br />146,900
<br />146,900
<br />1.46,900
<br />146,900
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<br />139,680
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<br />Green Mt.
<br />Spills
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<br />96,820
<br />16,680
<br />o
<br />13,890
<br />32,530
<br />o
<br />o
<br />o
<br />o
<br />180
<br />23,480
<br />11,680
<br />38,880
<br />40,530
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<br />19,620
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<br />The above tabulation indicates that the inflows to Green Mountain Reservoir
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<br />averaged 139,680 acre-feet during the study period and further shows that an average
<br />of 19,620 acre-feet would have spilled during the same period. Thus, the average
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<br />annual flow at Green Mountain Reservoir, assuming complete depletion of the river at
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<br />Dillon, would have amounted to 159,300 acre-feet.
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