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ARKANSAS BASIN February, 1998 <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 0.2 indicates that for January the ARKANSAS RIVER BASIN <br /> basin water supplies were near normal. The Natural Surfs.Sister supply Index Nlstory <br /> S <br /> Resources Conservation Service reports February 1 snowpack '- <br /> as 114%of normal. Flow at the gaging station Arkansas River <br /> near Portland averaged 432 cfs, as compared to the long term <br /> average of 354 cfs. Storage in Turquoise,Twin Lakes,Pueblo, - ;►- <br /> and John Martin reservoirs totaled 211% of normal as of the - ' <br /> end of January. Ifk- ,,. • <br /> ,`= ' <br /> Upper Arkansas River Basin snowpack as a whole I <br /> The wp _ <br /> is slightly above average for the end of January. The _ <br /> measurement site at Tennessee Pass had 84%of normal water a <br /> content, the Huerfano and LaVeta sites were both 149%, the 3- <br /> Purgatoire River site was 122%, and the Apishapa River site <br /> JAN99 JAN90 JAN91 JAN92 JAN93 JAN94 JAN95 JAN9G JAN97 JANOS <br /> was 158%. IbNTwY <br /> January has been relatively dry and warm for the <br /> Arkansas Basin with Pueblo receiving only 0.10 inches of <br /> precipitation for the month, compared a normal of 0.34 <br /> inches. <br /> ARKANSAS RIVER NR. PORTLAND <br /> FLOW BY WATER YEAR <br /> Administrative/Management Concerns isa <br /> The beginning of March is the deadline for submitting 140 <br /> Arkansas River Replacement Plans covering depletions due to 130 _ <br /> ground water pumping for the 1998 irrigation season. This 1 <br /> 20 <br /> N 110 <br /> will be the first year that replacement of depletions will be 10Q <br /> required to be made on the tributaries. The ability of these :I 90 <br /> proposals to augment the tributaries for the member's wells >g ea <br /> injurious depletions is a concern for management. The short F 70 <br /> evaluation and approval process is also a workload concern for °0 <br /> so <br /> the basin's administration staff. 40 <br /> 30 <br /> Public Use Impacts 20 <br /> Oct Nov O•q Jan Fib Mu-eh <br /> In this first year of requiring real time and place MONTN <br /> augmentation of the tributaries, obtaining hard to locate ° "�` ° oRy clam A A� N 1990 <br /> replacement water on tributaries may prove difficult or <br /> impossible for some non-exempt well owners. This small <br /> population of well owners may either have to cease pumping <br /> their wells or reduce their water rights to exempt type of uses REPRESENTATIVE RESERVOIRS <br /> to keep pumping. 350 ARKANSAS RIVER BASIN <br /> ``J <br /> 300- \\ <br /> • 250- \ <br /> • 200- <br /> 13 - \ \ <br /> ri'i u a \ \ <br /> g 100- \ �� <br /> 50 <br /> a <br /> /n\ //\ /n\� <br /> John Martin Puob10 Turquoise Twin Lskos <br /> ® Avg. 1/31 cont.... ® 1/31/9e Contents <br /> • <br />