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RIO GRANDE BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of -0.1 indicates that for May the RIO GRANDE BASIN <br /> asin water supplies were near normal. Flow at the gaging 5 S '"'Water ply ' History <br /> station Rio Grande near Del Norte averaged 2,313 cfs, as 4- <br /> compared to the long term average of 2,441 cfs. The Conejos _ ,r- <br /> to 3River near Mogote had a mean flow of 1,036 cfs. Storage in r ti <br /> Platoro,Rio Grande,and Santa Maria reservoirs totaled 193% z- I',of normal as of the end of May. J ' ' ' -' '~Alamosa received 0.3 inches of precipitation during 1 0 ' it-' )� "',..' - -' <br /> the month, 0.61 inches below normal. Temperatures ranged j �I ,���'i i <br /> - <br /> _ ' V <br /> from 25° to 84° in Alamosa where the average monthly • z = <br /> temperature was 55.2°, 4.8° <br /> above normal. a - <br /> -3 f <br /> 7 <br /> Outlook -4 , -. - .. . <br /> JAN97 JAN99 JAN99 JAN90 JAN91 JAN92 JAN93 JAN94 JAN95 JAN96 <br /> By the end of the month the bulk of the basin's YEAR/ONTN <br /> snowmelt runoff had passed and reservoir releases were <br /> making up a significant portion of flow in the Rio Grande. <br /> Many of the local streams experienced peak flow in early to <br /> mid May. A lack of precipitation and low snow pack will <br /> severely limit irrigation supplies throughout the basin. RIO GRANDE NR. DELNORTE <br /> PLOW BY 84194 YEAR <br /> 1,1 <br /> Administrative/Management Concerns - <br /> As June approached,may of the smaller tributaries of O.9 . <br /> the Rio Grande and Conejos were near base flow conditions. 0.6 - <br /> Only the most senior appropriations are able to divert. i 0 7 - - - - <br /> Reservoir levels are expected to be drawn down to minimal o! 5.5 <br /> levels by the end of the summer. Well use for irrigation has 5 <br /> een heavy and it is expected that the storage in the valleys 0.4 <br /> __quifers will be greatly reduced. Tensions are mounting as I 0.3 - 16, <br /> the dry conditions persist. :1: <br /> Public Use Impacts G <br /> Oct Nov Doc Jan Fab I8reh Apr II Nay June July Aug Swat <br /> The hot, dry,windy conditions have had a substantial MOWN <br /> A <br /> negative impact on farmers, ranchers, and recreators in the "E``1987, °` "97' AEG 0 "% <br /> upper Rio Grande basin. ` <br /> REPRESENTATIVE RESERVOIRS <br /> 60 RIO GRANDE BASIN <br /> SO- Ni <br /> i , <br /> 40- <br /> e <br /> L <br /> ag 30- <br /> DF <br /> I ao / / <br /> � f <br /> io <br /> o / /-\ \ r/\ <br /> Ala Grande Ptater* Sans akar fa <br /> ® Arg.$139 contents ® 5/31/96 CoatNnt• <br /> 5 <br />