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=~~======~===================-====================-================================~==========================a=_=_==_============ UPPER RIO GRANDE BASIN Streamflow Forecasts - May 1, 2003 Forecast Point =a===_c====__===:=_==============================_====a==__====_.._=__=_._.____==_______=__====_====___________=__=_==_===_______= I <<====== Drier ====== Future Conditions I Forecast I _=====s====_===_==== Chance Of Exceeding . ====a===_.===_=~====== Period I 90% 70% 50% (Most Probable) I 30% 10% 30-Yr Avg. I (1000AF) (1000AF) I (1000AF) (% AVG,) (1000AF) (1000AF) I (1000AF) .======-======._===================__==========a_=====-===-===--=-==1-========._===_._._===.,========_.====_=====-===-==__==_.=c== Rio Grande at Thirty Mile Bridge APR-SEP 58 61 I 64 47 67 71 136 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 , 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 Conejds 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 Costilla Reservoir inflow MAR -JUL Costilla Creek nr Costilla MAR-JUL ==-=====-=-====----._._=======_....=--=_._=..==.=----=-====-=---.=====...===.-.-.-.=====-====..-===-========-=.....=====-========= 19.0 1.84 18.0 13.6 7.6 18.0 UPPER RIO GRANDE BASIN Reservoir Storage (1000 AF) - End of April 49 117 49 175 9.6 2.40 28 32 87 5.6 27 19.0 53 140 59 210 16.0 27 26 33 38 107 7.5 33 9.0 22 Wetter ::za===>> 55 47 58 61 118 155 45 170 195 345 65 49 71 81 132 230 43 250 285 531 21 64 26 32 33 32 46 37 45 70 4.00 46 5.60 7,90 8.70 31 78 36 44 40 37 42 58 59 41 46 46 52 64 71 120 60 133 153 200 9.0 55 10.6 13.2 16.4 38 51 43 49 74 23 100 27 32 23 10.0 94 11.0 12.4 10.6 24 92 26 30 26 UPPER RIO GRANDE BASIN. Watershed Snowpack Analysis - May 1, 2003 Reservoir ==~====-=============z=========~=====_===_z======_================================_==_=====================.==____=z============== Usable I *** Usable Storage *** I Number This Year as % of Capacity' This Last I Watershed of =___====_======== I Year Year Avg I Data Sites Last Yr Average ==---===-==========----===-=-===---=======-======-=_..=====-==-_...====.1===_.==_===__===========.==========_.._=__====_=__==_==== 6.6 I I 23.3 I , 21,4 I 25.8 I , 11.1 I I 7.8 I I CONTINENTAL 15.0 PLATORO 53.7 RIO GRANDE 51.0 SANCHEZ 103.0 SANTA MARIA 45.0 TERRACE 13.1 .=-====.====.=-===-_.=.=._-===..==_====_...c==~====.._===_=_____.===_=_=_.__=_....===._.._._==..=....=..=___.==_=......._====..... 5.1 7.7 19.0 12.8 9,3 3.2 4.2 13.8 13.7 24.3 7.9 4.7 ALAMOSA CREEK BASIN CONEJOS , RIO SAN ANTONIO CULEBRA , TRINcHERA CREEK - UPPER RIO GRANDE BASIN TOTAL UPPER RIO GRANDE BA 2 o 15 4 3047 62 5 .0 105 12 453 43 23 911 56 * 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 upstream water management.