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._............._..................a...............~....................................................................~.....~.... UPPER RIO GRANDE BASIN Streamflow Forecasts - April 1. 2004 .................................................................................................................................. Wetter .....>> I I .................... Chance Of Exceeding * ...................... I 90'11 70'11 50'11 (Most Probable) 30'11 10'11 I 30-'lr Avg. I (lOOOAF) (lOOOAF) I (leO.OAF) ('II AVG.) I (lOOOAF) (lOOOAF) I (lOOOAF) ....................................................................I....._............D..._I._._~......._.....................-.. Rio Grande at Thirty Mile Bridge APR-SEP 87 105 I 120 88 I 137 166 136 I I I 101 86 I I I I 295 86 I I I I 120 91 I I I I 460 87 I I I I 25 76 I I I I 62 89 I I I I I Forecast Point Forecast Period 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 San Antonio River at Ortiz APR-SEP L~s Pinos River nr Ortiz APR-SEP CUlebra Creek at San Luis APR-SEP Costilla Reservoir inflow MAR-JUL Costilla Creek nr Costilla MAR-JUL .a.........................................................................................--..................................... 27 26 <<...... Drier ...... Future Conditions 185 300 11.9 3.60 4.1 2.20 3.5 132 8.8 4.6 4.4 9.7 .Reservoir Usable I Capacity I UPPER RIO GRANDE BASIN Reservoir Storage (1000 AF) - End of March 77 84 19.0 44 6.30 4.40 44 49 47 90 250 105 395 55 8.10 93 113 340 135 525 31 69 9.90 11.4 9.20 11.6 62 69 204 16.4 72 22 9.0 22 133 118 7.2 9.3 78 405 345 6.80 77 156 132 7.0 76 620 531 9.3. 52 57 57 63 89 89 40 33 162 91 80 70 182 11.8 14.0 85 12.60 8.70 58 88 14.5 12.0 65 10.5 16.0 70 12.80 8.80 5.6 69 15.1 12.2 7.3 13.5 67 70 77 64 71 17.5 234 200 20 16.4 83 74 30 23 11.4 10.6 UPPER RIO GRANDE BASIN Watershed Snowpack Analysis - April 1. 2004 Watershed CONEJOS & RIO SAN ANTONIO CULEBRA & TRINCHERA CREEK UPPER RIO GRANDE BASIN TOTAL UPPER RIO GRANDE BA Number of .................................................................................................................................. 5.6 14.4 14.6 5.6 3.5 The average is computed for the 1971-2000 base period. 8.0 19.0 12.5 10.8 2.7 This 'lear as 'II of ................. 4 110 85 ... Usable Storage ... I This Last I 'lear 'lear Avg I Data Sites Last 'lr Average ~~;;~;;;;;~.......................=.....~~:~......;:;......;:;......~:;.I...;~~;;.~;;;;.;;;~;.........;.......~;~........~;..... - I 24.5 I I 19.3 I 24.9 I I 10.8 I I 7.6 I I PLATORO 53.7 RIO GRANDE 51.0 SANCHEZ 103.0 SANTA MARIA 45.0 TERRACE 13.1 .................................................................................................................................. 5 52 62 12 142 83 23 103 77 . 90'11. 70'11. 30'11, an4 10'11 chances of exceeding are the probabilities that the actual volume will exceed the volumes in the table. (1) - The values listed under the 10'11 and 90'11 Chance of Exceeding are actually 5'11 and 95'11 exceedance levels. (2) - The value is natural volume - actual volume may be affected by upstream water. management.