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===_===m============_====~=_====================_==~===--_==_===_____=_=__==__===_._.______===._._=...._.===-=--====_==_===c=_===_ ARKANSAS RIVER BASIN Streamflow Forecasts - April 1. 2003 Forecast Point =___===am============_==============_============_==___====_=_.===~==_===========_=============_======.====_===~=.================ Future Conditions Forecast Period <<.~--=. Drier =_=... Wetter =====>> I I -==-==:_-=:_===-==== Chance Of Exceeding * ===_.==--.-===--==._-- I 90% 70% 50% (Most Probable) 30% 10% I 30-Yr Avg. I (1000AF) (1000AF) I (1000AF) (% AVG.) I (1000AF) (1000AF) (1000AF) ===..==.==--=.=_.======--=~===.====._..======--==.===...==_..=.---==I..---=-_.====...==--=--I..-==-=._--==-~-==-..-....--.--====== Chalk Creek nr Nathrop APR-SEP 12.1 20 I 25 93 I 30 38 27 I I I 270 87 I I I I 18.0 92 I I I I 365 85 I I I I 14.8 96 I I I I 11.8 91 I I I I 42 96 I Arkansas River at Salida APR-SEP Grape Creek nr Westcliffe APR-SEP Pueblo Reservoir Inflow APR - SEP. Huerfano River nr Redwing APR-SEP CUcharas River nr La Veta APR-SEP Trinidad Lake Inflow APR-SEP 12.0 ....==-======.-.==..._===..==_....==_._==--==--=-==.====~====..z==a=__=====.==..==.=.==.========..==.==z============_.=.=====_=_== ARKANSAS RIVER BASIN Watershed Snowpack Analysis - April 1, 2003. I I ..-...=-.---==.=........--===...-=..==----==......--..-.-==..==--==-....--.-.--=-.----===-===---.-..===...=-==-.=-=.-..-.-.==.--.- 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 .=~==.==-=========--====.======================--==.=-=======..====.====I.=-.~==..==.=-=...====.==.=.======.=========~==~_==.aa=== ADOBE 70.0 0.0 31.2 37.0 I UPPER ARKANSAS BASIN 3 155 93 I 6.7 I 41.9 I I 4.9 I I 12.6 I I 137.3 I I 6.7 I I 19.0 I I 173.3 I I 27.5 I I 74.0 I I 42.5 I I ARKANSAS RIVER BASIN Reservoir Storage (1000 AF) - End of March Reservoir CLEAR CREEK 11.0 7.0 . GREAT PLAINS 150.0 2.8 HOLBROOK 7.0 2.9 HORSE CREEK 28.0 0.0 JOHN MARTIN 335.7 43.7 LAKE HENRY 8.0 6.5 MEREDITH 42.0 17.7 PUEBLO 236.7 111.4 TRINIDAD 72.3 17.5 TURQUOISE 126.6 32.3 TWIN LAKES 86.0 28.3 ....-..=..--=_.=.-.-..-..=_...=.==a=.=~._==z__..==.....-...--....a__.._a..._._..._........_._.=...._._.._._=......____..._=....=_= 177 6.5 235 7.4 4.8 22.8 91.3 24.7 143.6 18.2 53.9 45.2 230 11.2 315 11.8 9.0 30 6.5 6.1 0.0 6.3 310 365 310 25 35 19.6 415 495 430 17.9 22 15.5 14.6 18.8 13.0 54 72 44 CUCHARAS & HUERFANO RIVER 4. 272 103 PURGATOIRE RIVER BASIN 2 391 110 TOTAL ARKANSAS RIVER BASI 8 209 100 The average is computed for the 1971-2000 base period. * 90%. 70%. 30%. and 10% chances of exceeding are the probabilities that the actual volume will exceed the volumes in the table. (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.