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RIO GRANDE BASIN <br /> r <br /> Basinwide Conditions Assessment: <br /> The SWSI value of+2.9 indicates that for August the RIO GRANDE BASIN <br /> Slrfau Water Supply Index History <br /> )asin water supplies were above normal. Storage in Platoro, 5 <br /> Rio Grande, and Santa Maria reservoirs totaled 227% of 4 <br /> normal on August 31. Flow at the gaging station Rio Grande ,_ 1 . <br /> near Del Norte averaged 652 cfs, as compared to the 1961- 3 ' 1 t; _ <br /> 1991 August average of 708 cfs. The National Weather 2 - '-- - ' <br /> 99 gu g �. .�. .� :: <br /> Service reports August precipitation as 224% of normal. _. 1 <br /> August was cool and very wet for the San Luis Valley. The g B -'�' 6 °—,� -� <br /> was � �V = <br /> average high temperaature for Alamosa during the month -, <br /> 75°, while the average low was 470. Alamosa received 5.4 .r <br /> 1 <br /> 2 <br /> inches of rain during the month which is 4.3 inches above <br /> -3 <br /> normal. -11 <br /> -4 <br /> JAN24 JANES JANOS JAHS7 JAMB JANB9 JAN20 JAN91 JANO2 JAN43 <br /> Outlook YEAR/MONTH <br /> Heavy rains during the latter part of August sent large <br /> volumes of water down the rivers. River levels have started to <br /> drop off and are expected to continue to decrease to base <br /> flows. <br /> RIO GRANDE NR. DELNORTE <br /> FLOW BY WATER YEAR <br /> Administrative/Management Concerns 1.1 <br /> Widespread heavy precipitation, particularly during 1 . <br /> the last week of August, brought new life to the rivers of the 0.9 <br /> basin. The Conejos river near Mogote went from a flow of .. a.E <br /> 204 cfs on August 27 to 817 cfs on the 28th. The Rio Grande i^ O 7 <br /> near Del Norte went from 454 cfs on the 27th to 2,450 cfs on <br /> the 29th. Many of the smaller rivers and streams also had a O.3 <br /> large increases due to the precipitation. The average flow of s 0.4 <br /> the Conejos near mogote during August was 309 cfs compared 1 0.3 <br /> to last month's average of 651 acfs. Colorado delivered 2 }fe <br /> 40,090 acre-feet of water to the New Mexico state line during 0.1 h. �� i <br /> August. G <br /> Oct Nov Ose Jan Fab Moron April May June July Aug Sept <br /> MONTH <br /> 0 WET C1WA7) O DRY(1977) • AVG X 1983 <br /> Public Use Impacts <br /> The San Luis Valley is cooling off for the summer, <br /> which is starting to get people thinking about the winter <br /> ahead. Many loads of firewood have been spotted going down <br /> the road and the harvest is upon us. The heaavy rains are not REPRESENTATIVE RESERVOIRS <br /> making for a very good harvest but everyone is hopeful that so RIO GRANDE BASIN <br /> things will dry up so that the fall work can be completed. 43- <br /> 4O- <br /> J <br /> i! 333- <br /> •y <br /> 3O <br /> 10- <br /> 5-.,//\ /\ ,/\ <br /> Rlo Grande Platoro Santsi4rl■ <br /> ® AVG. 8/71 Contents ® 8/3V1113 contents <br /> 5 <br />