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RIO GRANDE BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of -2.8 indicates that for June the RIO GRANDE BASIN <br /> Sur'"'Water supply Index"`eta y <br /> in water supplies were below normal. Flow at the gaging s <br /> � <br /> station Rio Grande near Del Norte averaged 1,363 cfs, as <br /> compared to the long term average of 3,092 cfs. The Conejos , <br /> River near Mogote had a mean flow of 460 cfs. Storage in r u <br /> Platoro,Rio Grande,and Santa Maria reservoirs totaled 113% 2- - w <br /> of normal as of the end of June. • T _ <br /> Alamosa received 1.16 inches of precipitation during G C_ '� <br /> the month, 0.49 inches above normal. Temperatures ranged �� ��'� T <br /> from 32° to 88° in Alamosa where the average monthly • <br /> temperature was 60.0°, 0.6° above normal. <br /> _3_ <br /> Outlook -4 <br /> JAN87 JAN99 JAN99 JAN90 JAN91 JAN92 JAN93 JAN94 JAN95 JAN96 <br /> The rainfall during June was welcome by San Luis YEAwwNrN <br /> Valley residents. Due to the shortage of water in area rivers <br /> and creeks, rainfall may be the only source of moisture for <br /> many farmers and ranchers. Even with the abundance of rain, <br /> streams in the basin are expected to flow far below historic <br /> averages this summer. Reservoir levels will continue to RIO GRANDE NR. DELNORTE <br /> decrease as irrigation demands are met. F(°"BY""Ate'YEAR <br /> 1 1 <br /> • <br /> Administrative/Management Concerns 09 <br /> Only those water rights with very senior <br /> appropriations are diverting. Water administrators are 4 O 7 - <br /> working overtime to prevent illegal diversions. Flows in the o t o s <br /> Rio Grande near the stateline are drastically below average as W o s <br /> 'versions upstream use the dwindling supply. Despite the 18 <br /> r flows to New Mexico it appears Colorado will meet its Rio 3 <br /> cirande Compact delivery requirement in 1996. O_ <br /> 0 1 <br /> Public Use Impacts 0-- <br /> Oct N70 Oec Jan Feb 4rrcb April May June July Aug Sept <br /> Some farmers, ranchers, and rafting industry MORN <br /> 0 VET(1967) O ORY C1977) A AVG % 1l96 <br /> personnel have suffered from the low stream flow conditions. <br /> The rainfall brought some relaxation of the open-fire ban in <br /> the area. The Rio Grande basin in Colorado has been very <br /> fortunate in that no major fires have occurred this year. <br /> REPRESENTATIVE RESERVOIRS <br /> 50 RIO GRANGE BASIN <br /> 45- <br /> 40- <br /> 35- <br /> i <br /> �� so <br /> ,g 25- / <br /> 35P <br /> rV 20 <br /> 15 <br /> 10 <br /> 5 <br /> G <br /> Rio Grande PIstore SantaMrIa <br /> Avg. 6/30 Contents ® 6/311r96 Contents <br /> 5 <br />