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<br />Wayne N. Aspinall Unit [Gunnison River]
<br />Blue Mesa Reservoir
<br />Morrow Point Reservoir
<br />Crystal Reservoir
<br />
<br />.valerVaar1983
<br />rhe Wayne N. A.plnall Unit, formerly the
<br />~urec8ntl UnIt, Includes Blue Mesa, Morrow
<br />JoInt, and Crystal Reservoir. Blue Mesa
<br />)ro'lldes near\y an of the long-term regulation
<br />or all three powerplants. Morrow Point
<br />"ovldes peaking power, and Ihu. ha. highly
<br />farlable releases. The prlme.ry function of the
<br />::rystal Reservoir Is to reregIJlata the variable
<br />lJIorrow Point relesses.
<br />
<br />~tlhe beginning of water year 1983, Blue
<br />Y1esa Reservoir was at water surface elevation
<br />'509 feel, and .tored 739,100 acre-feet. The
<br />vatsr surface was gradually lowered to
<br />~eva\\on 74691..\, wIth a content of 429,300
<br />lcre-teet, prior to the spring runoff.
<br />
<br />-he April through July runoff above Blue
<br />Aesa was 840,000 acre-teet, or 135 percent of
<br />,ormal. With thl. runoff, the re.ervolr filled
<br />IY the end of June, reaching elevation 7519
<br />feet end .'orlng 822,600 acre-feel. Thl. water
<br />surface elevation was sustained through
<br />mid-July. During thl. per10d,135,000
<br />:lcre-feet bypassed the powerplant. By the
<br />:md of the water -year, the water &\.Ir~actl..,.,u
<br />lradually reduced 10 elevation 7509 feet and
<br />he reservoir stored 739,900 8.Cre-feet. A peak
<br />nflow of 8,320 cf. occurred on June 20,1983:
<br />naxlmum outflow of 5,720 cts occurred on
<br />ruly " 1983.
<br />
<br />Aonow Point ReservoIr was operated at
<br />Ir near capaCity between elevations 7153 teet
<br />,nd 7157 feet. During April through July,
<br />rlbulary Inflow Into the Morrow Point
<br />leservolr was 110,000 acre-teet, 186 'Percent
<br />f normal. A lotal of 1,367,000 acre-feet wa.
<br />!tleased, with 81,000 acre-teet ot water
<br />ypa..lng Ihe powerplant.
<br />
<br />rystal Reservoir was also operated at or
<br />ear reservoir capacity. The April through
<br />Jly tributsr)' Inflow Into this reservoir was
<br />l2,OOO acre-feet or 207 percent of average. A
<br />Ital at 1,624,000 acre-teet was released, with
<br />;0,000 acre-feet bypas.lng the powerpl.nt.
<br />uring water year 1983, mInimum daUy
<br />Jttlow trom the reservoir waS approximately
<br />260 cf.. MBl<lmum outflow of 10,000 cf.
<br />:curred on June 26,1983. The maximum
<br />,tflow would have been gre.ter then 13,000
<br />'3 had not Blue Mesa and Taylor Park
<br />
<br />
<br />Reservoirs moderated the peak Inflow. Thus
<br />the operation of these reservoIrs reduced flood
<br />damage along the Gunnison River near Delta,
<br />Colorado.
<br />
<br />Waler Year 1984
<br />Assuming averagelntlow conditions for water
<br />year 1984, the Blue Me.a Re.ervolr I.
<br />expected to reach B low of 7464 feet with a
<br />content of 398,000 acre-feel by M.rch 1984.
<br />The re.ervolr I. projected to fill 10 near
<br />maximum capacity at elevation 7518 feet and
<br />10 .tore 819,000 acre-feet by Ihe end of July,
<br />
<br />The Morrow Point Reservoir will operate at or
<br />near \\s capacity aur\ng the current year.
<br />Crystal Reservoir will also operate nearly full
<br />except for dally fluctuation. needed In
<br />regulating the releases trom Morrow Point
<br />and to meet downstream requirements for fish
<br />habitat and diversions through the Gunnison
<br />Tunnel.
<br />
<br />Assuming average runor, conditions. releases
<br />from Crystal Reservoir will be maintained
<br />et powerplant capaclty-.bouI1 ,600 cf..
<br />Undar lower Quartile 'l'\.Ino1f cond\\\ona,
<br />releases will range from a minimum of 700 ets
<br />to a mBl<lmum of 1 ,700 cf.. If Ihelnflow I.
<br />above average, It will be necessary to bypass
<br />the powerplanl, po..lbly with relea.e. a. high
<br />as 4,000 cf..
<br />
<br />Blue Mes. Active Storage"
<br />Reservoir (Acre-Feet)
<br />
<br />Maximum Storage 829,523
<br />Rated Head 249,395
<br />Minimum Power Bl,070
<br />Surface Area (Full) 9,180 Acres
<br />Reservoir Length
<br />(Full)
<br />Power Plant
<br />Number 01 Units 2
<br />Total Capacity 60,000 Kilowatts
<br />.doea nol Include 111,232 acre-leet of dead storage
<br />below 7358 leet
<br />
<br />Chart 3
<br />EI.(Ft.)
<br />7519
<br />7438
<br />7393
<br />
<br />24 Miles
<br />
<br />Morrow Point Active Storage"
<br />Maximum Storage 117,025
<br />Rated Head 79,805
<br />Minimum Power 74,905
<br />Surface Area (Full) B17 Acres
<br />Reservoir Lenglh
<br />(Full)
<br />Power Plant
<br />Number of Units 2
<br />Total Capacity 120,000 Kilowatts
<br />.does nollnclude 165 acre-feet ot dead storage
<br />below 6808 feet
<br />
<br />7160
<br />7108
<br />7100
<br />
<br />11 Miles
<br />
<br />Cryslal Active Storage"
<br />Maximum Storage 17,573
<br />Rated Head 13,886
<br />MInimum Power 10,619
<br />Surface Area (Full) 301 Acres
<br />Reservoir Length
<br />(Full)
<br />Power Plant
<br />Number of Units 1
<br />Total Capacity 28,000 Kilowatts
<br />. d08l!l not Includ. 7,700 ac:rlt-fNt of dNd Itorage
<br />below 8670 feet.
<br />
<br />6755
<br />6742
<br />6729
<br />
<br />7 Miles
<br />
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