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T <br /> SAN JUAN/DOLORES/ANIMAS BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of +2.5 indicates that for August SAN JUAN/DOLORES/ANIMAS RIVER BASINS <br /> Sirfaee Water Supply Index History <br /> ,asin water supplies were above normal. Storage in McPhee, S <br /> Vallecito, and Lemon reservoirs totaled 122% of normal on 4 <br /> August 31. Flow at the gaging station Animas River near - 3 T , A <br /> Durango averaged 528 cfs as compared to the 1961-1991 ; i . • <br /> August average of 556 cfs. The National Weather Service 2 I - <br /> reports August precipitation as 169% of normal. While the Y 1 _ Fper. " . 1 �-., <br /> August continued the trend of warm and <br /> beginning of dry, � �, ,��,11- <br /> _,which <br /> cooler temperatures and rain began about August9th, r <br /> decreased the need for irrigation water in the basin. Heavy r <br /> rains the last five days of the month, (5.1 inches) contributed 2 <br /> _ fto Durango setting a record for August precipitation at 6.55 3 <br /> inches. The rain brought cooler temperatures to the region -4 <br /> JAN94 JAN85 JAN86 JAN.7 JAN88 JAN89 JAN90 JAN91 JAN02 JANS3 <br /> during the latter part of the month. The soil moisture was ►..,Tw.AR <br /> relatively dry until the last five days of the month,but the rain <br /> caused problems for farmers in the area since much of the <br /> second cutting of the hay crop was rained on. <br /> Administrative/Management Concerns ANIMAS RIVER NR. DURANGO <br /> FLOW BY WATER YEAR <br /> Flows in the major drainages were at or above normal i <br /> for August mainly due to the large rains during the end of the 0.2 .fe <br /> month. The peak flows on the Animas,Dolores, and La Plata 0.. <br /> rivers occured during the last two days of the month. The 1 0.7 <br /> high flow for the Animas river at Durango was 2,070 cfs, for i^ <br /> the Dolores river at Dolores 425 cfs, and for the La Plata river o °.s /7------ <br /> at Hesperus 118 cfs. Pagosa Spring experienced some minor r3 0.4 <br /> flooding in the area due to high flows on the San Juan river <br /> caused by the heavy end of month rains. Due to the above 0.3 <br /> normal snowpack last winter, and the heavy precipitation in 0.2 - <br /> August, the major reservoirs are still at or above normal <br /> storage levels. . <br /> oat. Nov imp Jut Feb wrdn April MAy June July Aug Sept <br /> NONTH <br /> O WET C1079) O ORY(1977) A AVG X 1.83 <br /> Public Use Impacts <br /> Recreation uses continued to be heavy during August, <br /> even though the rains during the last five days of the month <br /> made fishing condition less than optimum. The increased <br /> flows in the major river systems increased the challenge for REPRESENTATIVE RESERVOIRS <br /> white water enthusiasts if they were able to brave the cooler 3.0 °°L°` -ANIMAS eASINs <br /> 300 <br /> tetnperatures and wet weather. 500-! 2242:iv",1 .o <br /> -1/../ . <br /> W3 1.0 <br /> sv 140 <br /> 120 <br /> 3 100 <br /> so <br /> so <br /> r <br /> 26 /n\ �/////'� <br /> D. <br /> Spry» V$I l eC l to Lewori <br /> ® Avg.L.1 Oefltsct. ® W51/88 content. <br /> 9 <br />