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===~============~:=========~~~==~=~======~======:~=========~=~============::~:==========:=======~~~============~=====~~=========== UPPER RIO GRANDE BASIN Streamflow Forecasts - April 1, 2000 ====~~===========~==================~======~======================~============~=~==================~============~================ Wetter =====>> I I 1 I 30-Yr Avg. I (lOOOAP) (1000M) I (lOOOAP) (% AVG.) I (lOOOAF) (lOOOAf) I (lOOOAP) 00000000000==00==============0=======0=0==0=========0======00==0===01========00======0====0=1=======0========0===========0======0= Rio Grande at ThHty Mile Bridge APR-SEP 76 92 I 105 79 I 120 145 133 I 1 I 95 81 I I 1 I 1 I 1 1 I 1 1 I 1 1 I 1 1 I 1 1 1 1 1 1 1 1 1 1 1 1 I 1 Forecast Point Forecast Period Rio Grande Reservoir Inflow APR-JUL Rio Grande at Wagon Wheel Gap APR-SEP South fork R10 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 Capulln MAR-JUL Trinchera Water Supply APR-SEP Platoro Reservoir Inflow APR-JUL APR-SEP Conejos 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 Costllla Reservoir Inflow MAR JU L Costilla Creek nr Costilla MAR JU L ----------------------------------------------------------------------- ------------------------------------------------------------------------------ 16.9 21 96 ----------------------------------------- --------- ------------------------------ ------------------- 31 22 Future Conditions <<====== Drier ====== '" -------------------- -------------------- 70% Chance Of Exceeding 50% (Most Probable) 135 196 15.4 19.9 1.38 9.3 2.4 17.8 7.4 5.20 10.9 UPPER RIO GRANDE BASIN Reservoir Storage (1000 AF) - End of March 72 8S 30% 106 289 '7 423 36 45 5.30 37 39 44 13S 7.0 43 27 10.37 25 '" 12S 118 201 24S 74 355 330 37 80 61 123 132 63 293 3S8 69 S20 S20 24 30 88 4S 34 31 38 SS 56 69 1. 70 .SO 41 7.95 8.60 21 29 97 49 30 21 24 29 32 34 38 S8 59 47 S2 59 65 65 95 115 57 165 201 4.0 5.4 34 '.6 16.0 29 36 50 54 72 15.5 21 10S 35 " 7.17 8.70 96 13.09 9.10 UPPER RIO GRANDE BASIN Watershed Snowpack Analysls - April 1, 2000 -------------------- --------------------------------------------------------------------------------------------------------- -------------- ------------------------------------------------------------------------------------------------------ Usable I ... Usable Storage Number Thls Year as % of Reservoir capacltyl This Last I Watershed of ========,,======== I Year Year Avg I Data Sites Lazt Yr /werage 0======00==00===========0===0==0=============0======0==========0===00===100===0========0==========0=======0=0===================== CONTINENTAL 15.0 5.2 5.6 5.9 ALAMOSA CREEK BASIN 2 101 36 PLATORO 53.7 RIO GRANDE 51.0 SANCHEZ 103.0 SANTA MARIA 45.0 TERRACE 13 .1 - ---------- - -------------------------------------------------- -------------------------------------------------------------- ----------- - ----------------------------------------------------------- -------------------------------------------------------- 26.4 5. 44... 20.7 9.4 19.6 16. CONEJOS & RIO SAN ANTONIO 5 CULEBRA & TRINCHERA CREEK 6 23.5 18.0 .8 .2 UPPER RIO GRANDE BASIN 12 100 52 37 .4 17.3 TOTAL UPPER RIO GRANDE BA 26 213 86 9.0 6.5 96 62 117 61 . 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 1961-1990 base perlod. (1) The values listed under the 10% and 90% Chance of Exceeding are actually 5% and 95% exceedance levels. {2l The value is natural volume - actual volume may be affected by upstream water management.