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UPPER COLORAOO RIVER BASIN Streamflow Forecasts - March 1, 2002 a_~~~.........~~..a_..z..~.~~_.._..............._.......___.__.........K.~~~..._.~~~~z.....__=........a.==~==~~=.................. <C...... Drier ..~.z~ Future Conditions .=CZ_........=Z~===Z~=Z.K.K..z.zaK..__...._..._.........___.__......z=..~====z~=........_.~._...._=c~~~===ZE~~z..........._....E~C Wetter za=.=>> I 1 .................... Chance Of Exceeding ...................... I I 90t 70t I sot (Most Probable) I 30\: lOt I 30-Yr Avg. I (lOOOAP) (tOOOAF) I (lOOOAF) (t AVG.) I (lOOOAP) (10001>.P') I (IOOOAP) ........................................-...........................1.......................1..................................... Lake Granby Inflow 1\PR-JUL 121 146 I 165 73 I 187 225 225 1 1 1 33 65 1 1 1 I 68 72 I 1 1 I 135 81 I I I I 235 84 I I I I 36 60 I I 1 I 265 79 1 1 1 I 1000 69 I 1 1 I 100 71 I 1 1 I 450 63 I 1 1 I 1600 66 I 1 1 Forecast Point Forecast Period Willow Creek Reservoir Inflow 19.6 27 APR - JUL W1lliams Fork Reservo~r inflow APR - JUL 50 60 D1110n Reservoir Inflow APR-JUL 81 113 Green Mounta1n Reservoir 1nflow 1\PR-JUL 185 21< Muddy Creek blw Walford Mtn. Resv. APR-JUL 19.7 2. Eagle ~iver blw Gypsum ISO 226 APR - JUL Colorado River nr Dotsero APR-JUL 4" 791 Ruedi Reservoir Inflow APR-JUL 69 86 Roaring Fork at Glenwood springs APR - JUL 2.3 382 Colorado River nr Cameo 768 1263 =~~.....azc.K~z=~Z.._.............~..__................_...K.~._~~~~.=ac=c=~===~~~~z~z==~~~=a.....~~..~.~..~...._.~_~............. 1 1 ~........z~=z.=a.~_...........ZK=_......_......._____.___.....~~c.~=Z~~=E_C=cz~_.a~.~........._...._..........__.......__......... 1 I Avg I APR. JUL UPPER COLORADO RIVER BASIN Reservo1r Storage (1000 AF) - End of February " 50 51 76 .. .5 157 18. 167 257 2., 280 46 66 60 310 '" 335 1209 1517 1440 117 146 141 523 640 710 1937 2432 2420 UPPER COLORADO RIVER BAS IN Watershed snowpack Analys~s - March 1, 2002 This Year as \: of Reservoi!: Usable I Capacit.yl 1 Watershed ===........aE=.~z~......_._..__.....__.~==~~==~&.._C..._._C._~_~=2_~.... .............._...._..._~E....E~~a~_~=zz===.z......E.*..: ... Usable Storage Th1S Last Year Year Number of Data Sites Last Yr Average DILLON 250.8 201.0 218.4 216.8 BLUE RIVER BASIN . '7 " I.AJCE! GRANeY 465. 6 192.2 285_1 281.1 UPPER COLORADO RIVER BASI 31 81 71 GREEN MOUNTAIN B' .0 66 .. 44.4 70.0 MUDDY CREEK BASIN 81 65 HOMESTAKE 43.0 2.. 4 42.1 26 .6 PLATEAU CREEK BAS IN 81 53 RUED! 102 .0 63 .7 69.4. 6B .0 ROARING FORK BASIN 85 " VEGA 32 .0 9 .6 '.6 12.2 WILLIAMS FORK BASIN 83 7S WlLLIAMS FORK .6 .. 55.2 57 .5 57.3 WILLOW CREEK BASIN . 75 65 WILLOW CREEK 9.0 '.3 .2 6.7 TOTAL COLORADO RIVER BASI 40 .2 68 The average lS computed for the 1971-2000 base period. .._....._.._~~=.Z....E.==Z~Z.._==~Z~K....__............_ZZE.~.=.==....aa==~==a~=cc====~~===~=~=z===_=._._a..__=._C=Z~===.===.E=.a_ ; 90', 70\:, 30', and 10' chances of exceeding are the probab1lities thet the actual volume will exceed the volumes In the table. (I} The values listed under the 10\ and 90' Chance of Exceeding are actually 5t and 95' exceedance levels. {2} The value is natural volume - actual volume may be affected by upstream water management. .