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[ a <br /> RIO GRANDE BASIN October, 1998 <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 0.4 indicates that for September R I O GRANDE BASIN <br /> Surface Water S.gply Index History <br /> he basin water supplies were near normal. Flow at the 5 <br /> gaging station Rio Grande near Del Norte averaged 458 cfs,as 4_ <br /> compared to the long term average of 493 cfs. The Conejos ,- _ <br /> River near Mogote had a mean flow of 131 cfs (102% of 3 ' <br /> normal). The Conejos flow included 3,300 acre-feet of storage 2-• k -. �; <br /> release from Platoro Reservoir. Storage in Platoro Rio v MI '1 -� 'MI <br /> Grande, and Santa Maria reservoirs totaled 95%of normal as ii ,, ii ' - ' <br /> i. <br /> of the end of September. -,- P I 40 44 <br /> 44 <br /> Precipitation in Alarnosa was 0.86 inches, 0.03 inches ' 1 It 4 <br /> below normal. Temperatures ranged from 24° to 82° in a -2- II <br /> Alamosa where the average monthly temperature was 57.9°, -3 <br /> 3.1° above normal. -4 , .._.................................................. -........._ <br /> JANE9 JAN9O JAN11 JANS2 JAN93 JAN94 JAN95 JAN90 JAN97 JAN99 <br /> YEWICNTH <br /> Outlook <br /> Administrative/Management Concerns <br /> It appears at this time that Colorado will meet its <br /> delivery obligation to New Mexico and Texas under the Rio R I O GRANDE NP. DELNORTE <br /> Grande Compact. 4 9 FLOW 9Y WATER YEAR <br /> Administrators are hoping that a mild fall will allow <br /> water diversions for recharge purposes to help replenish the 0.9 <br /> burdened aquifers. . 5.5 <br /> The higher elevations in the Rio Grande basin did not .^ 0 7_ <br /> receive the accustomed September snow storm. So, as the o g o.a <br /> month grew to a close the surrounding peaks remain nearly _ <br /> )arren of snow cover. S u 0.4 <br /> 1 0.3 <br /> Public Use Impacts 0.2 <br /> Harvesting crops and hunting game became the focus 5.a <br /> of may of the basin's residents and visitors. o <br /> Oct Nov Oac Jan Feb Waren AprII May Juno July Aug Sept <br /> MONTH <br /> O WET C1907) 0 DAY C1977) a AVG X 909E <br /> REPRESENTATIVE RESERVOIRS <br /> RIO GRANDE BASIN <br /> 24 <br /> 20 <br /> .+ 18- <br /> . 96- <br /> k/\\ <br /> e <br /> br 94-. <br /> gl 12- <br /> m F 1 �eJ <br /> 4 <br /> ' i , _ _, <br /> r <br /> 0 /�\ /1\\ //\\ <br /> RIO Grande Plater* Sante0 rI■ <br /> ® Avg.9/30 foments ® 9/30/9E Contents <br /> 4 <br /> 5 <br />