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• RIO GRANDE BASIN <br /> 4 <br /> Basinwide Conditions Assessment: <br /> The SWSI value of-1.0 indicates that for October the SURFACE WATER SUPPLY INDEX <br /> basin water supplies were slightly below normal. Precipitation s RI.Gram*d.Ifl <br /> for the month measured 84%of average. Flow at the gaging ... , <br /> station, Rio Grande near Del Norte, averaged 294 cfs for the '- , <br /> u 3' � I I <br /> month as compared to the 1961-1991 October average of 428 - le_!, d' I�I ' <br /> I1 1 <br /> cfs. Basin wide reservoir storage was at 88% of average on 2- `: 1 114 <br /> III <br /> November 1. The San Luis Valley experienced some extreme 1 1 1_r mil, <br /> ' Illnsti <br /> weather conditions during October. Most of the month was i ° fI? <br /> ti�, <br /> unseasonably warm with a record high equaled early in the - _,- ; , <br /> month. This enabled most of the potato farmers to compete <br /> . _2- , , <br /> their harvest before winter set in. The last week of October o . <br /> brought winter to the Rio Grande Basin. Up to one foot of 3- <br /> snow covered the valley floor with up to thirty inches being - ,. <br /> JMN2 .LN+1.3 .0.44 J/N/S JuiS JAIN] JANOS „MIN! JAASO JAN31 <br /> reported in the surrounding mountains. A record low „,w,1, ,,,, <br /> temperature of-9 was recorded the last day of the month in <br /> Alamosa. ' <br /> Outlook: <br /> As of November 1 all of the reservoirs in the basin P I 0 GRANDE NEAR DEL NOWTE <br /> were in storage due to the end of the irrigation season and the 28 <br /> beginning of winter. Most of the rivers and creeks in the '°v <br /> basin were near base flows during most of October. On '" <br /> 22 <br /> November 1 the natural flow of the Rio Grande Near Del ZO <br /> Norte was 260 cfs, and the natural flow of Conejos near 113 •/ <br /> Mogote was 50 cfs. These flows are expected to decrease ,1 i j <br /> somewhat during November due to colder temperatures and 1 3 Tz <br /> the rivers freezing up. 1 v 1c <br /> Administrative/ManaRement Concerns: ._ <br /> There was very little curtailment on the Rio Grande 2 <br /> A A <br /> River during October since the projections showed their a ,,,,..,_, ..YIERNIE p 1.21 <br /> portion of the Rio Grande Compact obligation would be <br /> fulfilled. The curtailment on the Conejos River was lifted <br /> during the last ten days of the month since projected flows <br /> through the first of the year indicated their obligation to the <br /> downstream states would also be met. • <br /> Rio Grande Basin Reservoir Supplies <br /> As was reported last month, reservoir contents have 21 <br /> been substantially depleted in the basin. There is virtually no :- W <br /> 1,11 <br /> carryover storage in the irrigation reservoirs on the Rio - ' <br /> Grande mainstem, which could create a shortage of late = ;�- <br /> season irrigation water next year unless the basin receives i 13- <br /> substantial snowpack. 12 <br /> 7\\ <br /> II 1aL <br /> ss o <br /> The AWDI trial began on October 15. As of November !,. <br /> 1 the applicant had rested their case, with the objectors 1 s <br /> ",,, V <br /> portion scheduled to begin on Monday November 4. Much of <br /> the direct testimony and cross examination up to this point o AN <br /> �� �� <br /> has centered around the ground water model presented by Rio Gr, .,.tero <br /> AWDI. �1 <br /> IL.1.J * . 10/31 CO2t t• ® 1°121191 Contents <br /> Public Use Impacts <br /> During October and November may hunters and <br /> fishermen enjoy the remote and scenic areas of the Rio Grande Basin. Many trophy elk and deer are harvested in the <br /> mountains surrounding the San Luis Valley during this period. <br /> 5 <br />