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RIO GRANDE BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 0.0 indicates that the current SURFACE WATER SUPPLY INDEX <br /> conditions are normal. Precipitation measured 264% of , _ R'e[Yana. <br /> normal for the month of September. 2.9 inches of rain was ,_ <br /> recorded at Saguache. Streamflow conditions on the Rio . , : , <br /> w 3- <br /> Grande and its tributaries in the San Luis Valley were below ; : r` <br /> normal in August. Cumulative flow at the key gaging 4- ; t' LiF...;a . <br /> station, Rio Grande near Del Norte, was approximately 25% f ,- ^w w f9 . <br /> below normal for the water year but above the minimum 1 f: �7:� E <br /> flow recordedFlow atthis station was - _ ^, . ' ..in 1977. � �� -�'t,' <br /> approximately 25% below normal for the month of 1- �' <br /> 1. <br /> September. Usable storage water in Rio Grande Reservoir a -'- <br /> has been totally diminished. Usable storage in Platoro - 4 <br /> Reservoir is less than 40% of the historic average for this -. , ... ! . <br /> time of year. JAI., ..LM.3 JM.. .JMr! JANK JAN.7 JAf1.. JAW. .... .. . <br /> Outlook: ' <br /> Ground water levels in the unconfined aquifer <br /> continue to drop. Irrigation demands will decrease <br /> throughout the month of October. Pumping of irrigation R I 0 GRANDE NR. DELNORTE <br /> wells is beginning to taper off. Streamflow is expected to ,., _ _ as.y wria rw+ <br /> remain below normal. Platoro Reservoir levels will continue , ' <br /> to decline through the month of October. Unless significant 0.1 . . . <br /> snowpack develops, these storage levels will be critically low 1 0.3 , . ' , <br /> next summer. j <br /> O.. <br /> Administrative/Management Concerns: 1= ..3_ _ <br /> WS <br /> The possibility of recharge in the major canals on the . ' :../...'....--. ....-.---.,-"...."'".....'.- --1" ..--------..------'---.----1-----4 <br /> Rio Grande will depend upon administrative performance I — , <br /> under the Rio Grande Compact over the next 30 days. 0.2- <br /> Compact deliveries are currently on target. There should be <br /> a minimum over delivery to New Mexico. . . , 1 <br /> Oet rem Oaf Jan 140 wren Igrll wy June July wuo S.Ot <br /> idles <br /> Public Use Impacts: a Olaf+c1.m . to c1e77) 0 MG 0 1990 <br /> Recreational uses at basin reservoirs have been - <br /> diminished due to falling water levels. Flow in the Rio <br /> Grande mainsteam has been adequate to sustain the fishery. <br /> Rio Grande Basin Reservoir Supplies <br /> la <br /> • - <br /> ,.- <br /> „- <br /> * ,3- <br /> i^ 14- <br /> y <br /> a CO• 11. <br /> ii' <br /> /..\\ <br /> Al0 Drama Pfatare Barataria <br /> ® ►wg.1,30 Contents ® 1136/10 Contents <br /> 5 <br />