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t <br /> ARKANSAS BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 2.5 indicates that for May the ARKANSAS RIVER BASIN <br /> basin water supplies were above normal. Storage in SLrface rater Supply Inpex HI.tory <br /> 5 <br /> Turquoise, Twin Lakes, Pueblo, and John Martin reservoirs 4_ <br /> totaled 144% of normal on May 31. Flow at the gaging _ <br /> station Arkansas River near Portland averaged 1,506 cfs, as 3 . -- <br /> compared to the 1965-1993 May average of 1,144 cfs. The 2 J _ - - <br /> National Weather Service computes basin precipitation as ,If <br /> 1 - <br /> 214/o of normal during the month. The Natural Resources ' �" `� rr <br /> 114 <br /> Conservation Service reports June 1 snowpack as 338% of - ` <br /> normal. <br /> _2- — <br /> 0 <br /> Outlook 3 <br /> The river call in the Arkansas basin has remained on 4 <br /> JAN86 JAN87 JANBB JAN39 JAN90 JAN91 JAN92 JAN93 JAN94 JAN9S <br /> John Martin Reservoir (1948). This water is being stored in MONTWYEAR <br /> the 335,000 acre-foot conservation pool which has not been <br /> full since 1987. It is anticipated that this pool will be full in <br /> late June. Storage in the basin would then shift to the <br /> Fryingpan-Arkansas project reservoirs of Pueblo, Twin Lakes, <br /> and Turquoise. ARKANSAS RIVER NR. PORTLAND <br /> FLOW BY WATER YEAR <br /> 1 <br /> Administrative/Management Concerns O.9 <br /> Current administrative concerns involve the 0.8 <br /> probability of high runoff peak and volume. Pueblo Reservoir ! 0.7 <br /> outflows have already been reduced or shut off three timesD. <br /> ^ <br /> this season to protect downstream areas experiencing local o 0.5 <br /> runoff events. Relatively high flows thus far have also caused ;; 0. <br /> some river dike erosion above the City of Las Animas and s <br /> some localized pasture flooding. Already full irrigation ditches 3 <br /> combined with rain storms have combined to cause three 0.2 <br /> large ditches to wash out in places. 04 <br /> Oct Nov Dec Jan Feb March April May June July Aug Sept <br /> Public Use Impacts 1.49NTI4 <br /> Agriculture has had plenty of water so far this year, C <br /> WET`9984, 0 CRY a X 1995 <br /> with too much in some areas due to rain fall events. There <br /> has been some minor crop damage due to hail. <br /> REPRESENTATIVE RESERVOIRS <br /> ARKANSAS RIVER BASIN <br /> 240 <br /> 200- <br /> 200- <br /> a 180- <br /> 160 <br /> 10- \ <br /> $n 120— / <br /> N� \a <br /> :co <br /> A- <br /> �/ /\ <br /> /40 <br /> ,� <br /> 20 /\ p <br /> 0 <br /> John Martin Pueblo Turquoise Twin Lakes <br /> • <br /> 1/1 Avg- 5/31 Contents I Y 5/31/95 Contents <br /> 4 <br />