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F <br /> ARKANSAS BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of +1.4 indicates that the current SURFACE WATER SUPPLY 1 NDEX <br /> conditions are above normal. Snowpack measured only 70% S Aekansas River <br /> eosin - <br /> of normal on December 1, 1990. Unseasonably warm 4_temperatures resulted in snowpack runoff. Precipitation for 1 ' -- , - <br /> the month of November was 134% of normal. Flow at the '- <br /> key index gaging station, Arkansas River near Portland, <br /> averaged 583 cfs for the month of November as compared to g 1- :z . , I-- 3 <br /> the historic monthly flow of 435 cfs. Storage in the upper 0 — �� ''' <br /> reaches of the basin in Turquoise Reservoir and Twin Lakes I L� <br /> Reservoir is approximately 40% above normal while storage , ' _ J <br /> in the lower reaches of the basin in Pueblo Reservoir and o -2- ' f <br /> John Martin Reservoir is approximately 40% below normal. -3- <br /> Usable storage in Pueblo Reservoir was 100,514 acre-feet on -4 , <br /> JANH JANs2 JANs3 JANM JANP3 JANOS JANs7 JAWS JANeO JANib -sow <br /> December 1, 1990. Usable storage in John Martin Reservoir ,,aiTit, <br /> was 28,555 acre-feet on December 1, 1990. Winter water <br /> storage increased by 30,059 acre-feet between November 15 - <br /> December 1, 1990. The total amount of water stored under <br /> this program last year was 129,584 acre-feet. <br /> Outlook: ARKANSAS RIVER NR, PORTLAND <br /> The outlook for December is normal to above normal 35 /, <br /> conditions. Early snowpack has developed in the upper <br /> basin. Available storage capacity remains adequate in the '°- <br /> lower basin to compliment normal to above normal runoff. I "7 <br /> Administrative/Management Concerns: lit ' <br /> The winter water storage program runs from 51s <br /> November 15th through March 15th. The call on the <br /> Arkansas River mainstem will be March 1, 1910, throughout ,o <br /> this period. 5 APublic Use Impacts: <br /> '15-VI NOV.AVERAGE Na. i990 <br /> Water based recreation has been significantly <br /> impacted at Pueblo Reservoir, John Martin Reservoir and <br /> Trinidad Reservoir due to falling storage levels. <br /> Arkansas Basin Reservoir Supplies <br /> ,zo <br /> 100 / <br /> + •0-so- <br /> /\ <br /> It^ 70- <br /> .off <br /> SG so <br /> 1a <br /> 0 <br /> /ram\\ /\\ /\\ //�\\ <br /> Jaw Martin Pueblo Turquoise Trin Lakes <br /> ® Mil.11/30 Contents ® 1'U30/90 Contents <br /> 4 <br />