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<br />Water Year 1991 <br /> <br />Blue Mesa powerplant will be operated during the water year to <br />meet dovvnstream requirements and to minimize pO'h'Crplant <br />bypasses at Crystal Dam. The powerplant may also be used <br />occasionally to mitigate electrical emergencies caused by <br />research releases from Glen Canyon Dam. Assuming most <br />probable a"'rage inflow, Blue Mesa Reservoir will fill in July of <br />1991. <br /> <br />Morrow Point Reservoir releases arc expected to fluctuate up to <br />powerplant capacity during water year 1991. Crystal Reservoir <br />will be operated to regulate releases from Morrow Point <br />Reservoir, to meet dO'W11stream requirements for diversions <br />through the Gunnison Tunnel, and to protect the blue ribbon <br />trout fishery in the Black Canyon. Releases are carefully planned <br />to minimize large monthly changes in flow below the Gunnison <br />TunnelDiversion. The forecasted runoff during the springof1991 <br />will be constantly monitored to achieve this objective. <br /> <br />Assuming most probable inflow conditions, releases from Crystal <br />Reservoir will range from 300 cubic feet per second to the <br />maximum powerplant capacity of 1.700 cubic feet per second. <br />Minimum releases from Crystal Reservoir. providing a minimum <br />300 cubic feet per second flow to the Bh.ck Canyon of the <br />Gunnison, are projected to continue until Januaryof 1991. Flows <br />(0 the Black Canyon will be increased as storage in Blue Mesa <br />Reservoir recovers. Under most probable hydrologic conditions, <br />flows in the Black Canyon will increase to approximately 800 <br />cubic feet per second by Mayor 1991 and wiU continue at this level <br />for the duration of the water year. <br /> <br />ACTUAL BLUE MESA STORAGE 1990 <br /> <br />THOU SA NO ....CRE-FEET <br /> <br />'0 <br /> <br />0 <br />0 <br />0 ~ <br /> / ....... f"--. <br />0 <br /> ~ <br />0 <br /> <br />.0 <br /> <br />70 <br /> <br />.0 <br /> <br />50 <br /> <br />'00 <br />ONDJFMAMJJAS <br /> <br />PROJECTED CRYSTAL RELEASES 1991 <br /> <br />THOUSAND ....CRE-FEET <br />200 <br /> <br />, <br /> <br />... PAOli "'N ...... STPR B !>-" BWAX <br /> - '" <br /> J <br /> V f'-.. <br /> I / --- <br /> ~ -....... <br /> V / <br /> 1/ 1--1 v <br />~ <br />o~ 1/ z: <br />, ./ <br /> <br />'00 <br /> <br />'00 <br /> <br />o <br /> <br />BLUE MESA UNREGULATED INFLOW 1991 <br /> <br />THOUSAND ACRE-FEET <br />.00 <br /> <br />PRoe IN <br /> <br />101 STPR e <br /> <br />PR II WAX <br /> <br />300 <br /> <br /> <br />200 <br /> <br />'00 <br /> <br />o <br /> <br />PROJECTED BLUE MESA STORAGE 1991 <br /> <br />THOUSAND ACRE-FEET <br />ODD <br /> <br />PROII I'" <br /> <br />1.4 STPR II <br /> <br />PR BI.4AX <br /> <br />000 <br /> <br /> <br />700 <br /> <br />'00 <br /> <br />500 <br /> <br />.00 <br />ONDJFMAMJJAS <br /> <br />10 <br />