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UPPER RIO GRANDE BASIN Streamflow Forecasts - March 1, 2004 =.g~.====..g..........~...=..==.......==...D=.......................=.......................................................=....= Forecast Point Forecast Period Rio Grande at Thirty Mile aridga APR-SEP Rio Grande Reservoir Inflow APR-JUL Rio Grande at Wagon Wheel Gap APR-SEP South Fork Rio Grande at South Fork APR-SEP Rio Grande nr Del Norte APR-SEP Saguache Creek nr Saguache APR-SEP Alamosa Creek abv Terrace Reservoir APR-SEP La Jara Creek nr Capulin MAR-JUL Trinchera Creek APR-SEP Sangre de Cristo Creek APR-SEP Ute Creek APR-SEP Platoro Reservoir Inflow APR-JUL APR-SEP Conejos River nr Mogote APR-SEP sah Antonio River at Ortiz APR-SEP Los Pinos River nr Ortiz APR-SEP C~lebra Creek at San Luis APR-SEP Costilla Reservoir inflow MAR-JUL Costilla Creek nr Costilla MAR-JUL Wetter .....>> I I Chance Of Exceeding * .......=.............. I 50% (Most Probable) 30% 10% I 30-Yr Avg. (1000AF) (% AVG.) I (1000AF) (1000AF) I (1000AF) .......................1..........................-.......... US 92 145 180 136 <<...... Drier ...... 90% (1000AF) 180 270 13.1 3.20 4.6 3.06 3.7 133 7.7 6.6 5.5 14.1 70% (1000AF) 87 77 88 47 47 51 43 UPPER RIO GRANDE BASIN Reservoir Storage (1000 AF) - End of February Reservoir PLATORO 53.7 RIO GRANDE 51.0 SANCHEZ 103.0 SANTA MARIA 45.0 TERRACE 13.1 ...................--............................................................................................................. 5.2 11.0 12.8 5.1 0.3 7.8 18.1 11.8 11.0 2.2 Future Conditions 108 95 260 114 405 23 62 6.50 8.2 5.10 7.6 58 63 176 12.5 61 12.0 8.2 21 110 310 132 495 8.70 10.6 7.90 10.3 205 16.4 19.0 10.0 93 127 157 118 90 360 440 345 I I ..__a...........................................................a=........._..................._........~......_..__.............. Usable I *** Usable Storage *** I Number This .Year as % of Capacity I This Last I Watershed of ................. I Year Year Avg I Data Sites Last Yr Average ........................................................................1............................................=............ CONTINENTAL 15.0 3.3 3.1 5.3 I ALAMOSA CREEK BASIN 2 208 117 I 24.3 I I 17.6 I I 24.1 I I 10.6 I I 6.7 I 100 150 176 132 93 585 720 531 30 91 37 47 33 72 103 82 97 70 100 10.90 14.20 8.70 88 13.0 16.6 12.0 90 10.70 14.90 8.80 84 13.0 16.9 12.2 65 71 102 100 72 79 83 91 64 71 103 235 275 200 100 74 100 21 28 16.4 83 94 11. 8 87 74 25 96 29 105 26 36 23 CONEJOS & RIO SAN ANTONIO CULEBRA & TRINCHERA CREEK UPPER RIO GRANDE BASIN TOTAL UPPER RIO GRANDE BA 14.5 10.6 36 26 UPPER RIO GRANDE BASIN Watershed Snowpack Analysis - March 1, 2004 4 140 107 5 110 100 12 178 109 23 150 108 * 90%, 70%, 30%, and 10% chances of exceeding are the probabilities that the actual volume will exceed the volumes in the table. The average is computed for the 1971-2000 base period. (1) - The values listed under the 10% and 90% Chance of Exceeding are actually 5% and 95% exceedance levels. (2) - The value is natural volume - actual volume may be affected by upetream water management.