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. <br /> RIO GRANDE BASIN December, 1997 <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 0.1 indicates that for November the RIO GRANDE BASIN <br /> basin water supplies were near normal. The Natural sur,ac.+,tK up Sply Index HI story <br /> S <br /> Resources Conservation Service reports December 1 snowpack 4_ <br /> as 112% of normal. Flow at the gaging station Rio Grande W 3 - <br /> near Del Norte averaged 514 cfs, as compared to the long <br /> term average of 263 cfs. The Conejos River near Mogote had 2- - _ <br /> a mean flow of 91 cfs. Storage in Platoro, Rio Grande, and 1- 7 • , <br /> '� <br /> Santa Maria reservoirs totaled 89% of normal as of the end of 1 ° ) �' [",1 r-; �.' -•`-if• : ,� -. <br /> November. �� <br /> Alamosa received 0.54 inches of precipitation during _ " S' , <br /> November, 0.11 inches above normal. The high temperature - 2 <br /> -- r <br /> was 61° in Alamosa, the low-5°, and the average 27.5°, 2.4° -3- <br /> below normal. -4 , <br /> JAN96 JAN92 JAN90 JAN91 JAN92 JAN93 JAN94 JAN95 JAN96 JAN97 <br /> YEAR/MONTH <br /> Outlook <br /> Stream flow on the upper Rio Grande and its <br /> tributaries should remain above average throughout the <br /> winter, while flows in the Conejos River should be close to <br /> normal. The Closed Basin Project will continue to deliver RIO GRANDE NR. DELNORTE <br /> water to the Rio Grande. Project production during November 170 FLOW BY WATER YEAR <br /> was 3,100 acre-feet. 190 - <br /> 130 <br /> 140 <br /> Administrative/Management Concerns I 130 . <br /> Basin administrators are concentrating their efforts on 4 120 <br /> n 110 <br /> producing records of water diversions and stream flow for the ,.1 ,°° v7.7 ' <br /> past water year. 'ill.g 90 <br /> Delivery of water to the New Mexico state line from I. <br /> o° <br /> 70 ----."--"-'------- <br /> both the Rio Grande and the Conejos River exceeded a 90 �� <br /> projections during the past month. S0 <br /> 30 <br /> Public Use Impacts 20 <br /> Oct Nov O•a Jan Fob Merch <br /> Mild temperatures and light precipitation during the MONTH <br /> first two weeks of November gave way to cold and snowy • W `19� ° °FLY ° 0 X 1997 <br /> conditions at the end of the month. A blanket of snow on the <br /> valley floor dropped night time temperatures significantly. <br /> REPRESENTATIVE RESERVOIRS <br /> Rio Grand*Elms ln <br /> 2e <br /> 26- <br /> 24- <br /> 22- <br /> 20- <br /> • 19 <br /> I ,8- <br /> 14- <br /> A 9 <br /> • 12 <br /> • 10 <br /> a <br /> 6 <br /> O• A N /\ .\ <br /> Rio Grsind• PI sits*° Sant.ANoia <br /> ® Avg 11/30 Content• ® 11/90/97 C°M•nt• <br /> 5 <br />