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ARKANSAS RIVER BASIN Streamflow Forecasts - March 1, 2004 ~a.~..=.~......D...=..=...=..=.=..======~D=a==..=.===...__=.....a_=_.=......_......................._....__==_..a......=_=_==_._== Wetter ..a_.>> I I .................... Chance Of Exceeding * =.===_.a......====.... I 90% 70% 50% (Most Probable) 30% 10% I 30-Yr Avg. I (lOOOAF) (lOOO.l\F) I (lOOOAF) (% AVG.) I (lOOOAF) (lOOOAF) I (lOOOAF) =...=......................==.....................................==1....==.==..............1-==.............-.............-==.... Chalk Creek nr Nathrop AP!l.-SEP 7.6 17.0 I U 89 I 31 4.0 27 I I I I I I I I I I I I I Forecast Point Forecast Period 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 ................=-...................-.......-==........-........=-...........-=...........-=........-...=--.......=-............. ARKANSAS RIVER BASIN Watershed Snowpack Analysis - March 1, 2004 <<....._ Drier -..... 145 4.3 190 4.1 2.6 3.5 ARKANSAS RIVER BASIN Reservoir Storage (1000 AF) - End of February I I =....=...........~=D=..=...D==.=..===.=...=.=.==...=._===.==...._=====__..._....====........=_=......._==...~.=.====.......==.==== . Usable I *** Usable Storage *** I' Number This Year as % of Reservoir C~pacityl This Last I Watershed of ................. I Year Year Avg I Data Sites Last Yr Average ......=..=....--........................................................j...==..........==.........=................-............. ADOBE 70.0 0.0 0.0 36.0 I UPPER ARKANSAS BASIN 6 95 86 I 6.8 I I 38.9 I I 4.8 I I 12.7 I I 132.2 I I 5.6 I I 18.1 I I 168.7 I I 26.2 I I 77.3 I I 44.0 I I CLEAR CREEK 11.0 GR,EAT PLAINS 150.0 HOLBROOK HORSE CREEK . 28.0 JOHN MARTIN 335.7 LAKE HENRY MEREDITH 42.0 PUEBLO 236.7 TRINIDAD 72.3 TURQUOISE 126.6 TWIN LAKES 86.0 ..=c...a..._..=D..~........==.==......._...._==___.=.......=..............==..............................=....................... 8.3 0.0 7.0 0.0 210 8.7 275 10.0 5.3 26 6.9 3.8 2.3 0.0 4.4 Future Conditions 250 81 290 355 310 0.0 36.0 37.7 17.0 37 19.6 8.0 4.7 87 25 335 78 480 395 430 23.4 15.3 14.0 90 18.0 24 15.5 108.1 106.8 10.0 77 14.7 22 13.0 17.8 16.3 41 93 56 78 44 66.3 37.8 CUCHARAS & HUERFANO RIVER 4 129 98 38.5 31.0 PURGATOIRE RIVER BASIN 106 99 2 TOTAL ARKANSAS RIVER BASI 11 106 90 * 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.