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• <br /> RIO GRANDE BASIN May, 1997 <br /> inwide Conditions Assessment: <br /> The SWSI value of 2.8 indicates that for April the R I O GRANDE BASIN <br /> Surtup Water Supply 1nieu Nletory <br /> basin water supplies were above normal. The Natural : - <br /> Resources Conservation Service reports May 1 snowpack as 4 I_ <br /> 136%of normal. Flow at the gaging station Rio Grande near _ Iti <br /> Del Norte averaged 743 cfs, as compared to the long term 1 <br /> 2- <br /> average of 665 cfs. The Conejos River near Mogote had a <br /> mean flow of 225 cfs. Storage in Platoro, Rio Grande, and 1- <br /> Santa Maria reservoirs totaled 114% of normal as of the end 11 a "' 1111-4p,r <br /> of April. _ill ...,./, „.41 <br /> Precipitation in Alamosa measured 0.32 inches during <br /> c -2- <br /> April, 0.17 inches below normal. The high temperature was a <br /> -3- <br /> 67°in Alamosa,the low 5°,and the average 37.8°,3.3°below <br /> normal. JANee JANB9 JAN90 JAN94 JAN92 JAN93 JAN94 Jmeas JAN9G JAN97 <br /> Due to the colder than normal temperatures, stream y."aTM <br /> flow in the basin was generally slightly below average. <br /> Outlook <br /> Cool temperatures and good snowfall during April <br /> changed the outlook in this basin a great deal since last R I O GRANDE NR. DELNORTE <br /> FLOM 8Y*Area YEAS <br /> month's report. Water administrators are now expecting <br /> .30 <br /> above average stream flow on all creeks in the basin. <br /> 200 <br /> Administrative/Management Concerns i .oa <br /> Natural Resources Conservation forecasts generated in <br /> early May called for April through September flows on the Rio s t 3� <br /> ande and Conejos River drainages to be 129%and 125%of it g <br /> average, respectively. All forecasted stream flows are now <br /> above average, with the southern Sangre de Criesto <br /> projections showing the most improvement since March 1. ..3e <br /> Public Use Impacts ° , <br /> Oct Nov Doc Jun Fob March Oar II Nur <br /> Winter activities were replaced during April by the LOCH <br /> 0 <br /> C1087) a OWC,, , AvG X ,997 <br /> normal spring time field preparations and ditch cleaning. The <br /> heavy winds earlier in the month have eased. <br /> REPRESENTATIVE RESERVOIRS <br /> F10 MANGE BASIN <br /> 28 , <br /> 24 <br /> 22 1 <br /> 22- <br /> : ::d:-7\ <br /> i n 76.7\ <br /> • 14 <br /> h 2 ,2 <br /> •V 70_.././\.\\ .7 <br /> B <br /> /\\/\\ \ <br /> 4 <br /> 2,/,/,\;\ <br /> Ale Grande PI*tor. S+►nt sMar l■ <br /> ® Avg. 4/30 Contents ® 4/30/97 Contents <br /> J <br /> • <br /> • <br />