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=========='===-===-====-=='===================='==="====================================================='======':i========================= Forecast Point Forecast Period Rio Grande at Thirty Mile Bridge 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 Water Supply APR-SEP Platoro ReServoir Inflow APR-JUL APR-SEP Cortejos River nr MogOte APR-SEP San AntOnio River at Ortiz APR-SEP LoS PinOS River nr Ortiz APR-SEP CUlebra Creek at San Luis APR-SEP Coeiti.lla Reservoir inflow MAR-JUL Costilla Creek nr Costilla MAR-JUL ===========================================~=====================================================================================~ UPPER RIO GRANDE BASIN Streamflow Forecasts - March 1, 2003 90% (1000AF) 16.0 1. 70 11.2 18.6 14.1 70% (1000AF) 58 72 =================================================::::::::=;;~:;=::::::==;~~~;:=;~~~~~~~~:===========;:~~:;=:::::::==j============= I ==================== Chance Of Exceeding * ====================== I 50% (Most Probable) 30% 10% I 30-Yr Avg. (1000AF) (% AVG.) I (1000AF) (1000AF) I (1000AF) ==================================================================== =======================1===================================== 83 61 I 96 120 136 I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 51 62 72 61 83 75 153 205 59 255 39 65 83 63 101 92 225 315 59 405 2.6 12.7 19.5 59 27 31 41 59 51 2.80 5.00 58 7.20 18.3 29 73 40 23 22 34 34 41 42 64 59 48 50 59 102 131 66 160 3.6 7.0 10.0 61 13.5 37 50 68 63 7.9 13.0 20 87 27 5.5 8.2 10.0 94 11. 8 21 25 96 29 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 =============='==================================================================================================================== 7.8 18.1 11.8 11.0 2.2 103 118 335 345 127 132 540 531 37 33 66 70 10.50 8.70 55 40 59 62 64 71 204 200 19.7 16.4 81 74 37 23 14.5 10.6 38 26 UPPER RIO GRANDE BASIN Watershed Snowpack Analysis - March 1, 2003 (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 upstream water management. The average is computed for the 1971-2000 base period. 16.8 CONEJOS & RIO SAN ANTONIO 11. 8 CULEBRA & TRINCHERA CREEK 4 182 77 23.6 UPPER RIO GRANDE BASIN 5 162 101 7.5 TOTAL UPPER RIO GRANDE BA 12 173 61 3.5 23 170 73 * 90%, 70%, 30%, and 10% chances of exceeding are the probabilities that the actual volume will exceed the volumes in the table.