Laserfiche WebLink
+ 1 . <br /> SAN JUAN/DOLORES BASIN October, 1998 <br /> Basinwide Conditions Assessment: <br /> The SWSI value of-0.4 indicates that for September _ , SAN JUAN/DOLORES RIVER BASINS <br /> Surface Water Supply Ind.History <br /> he basin water supplies were near normal. Flow at the 5 <br /> gaging station Animas River near Durango averaged 367 cfs, 4_ <br /> as compared to the long term average of 461 cfs. Storage in ; - _ I I. <br /> . 3- <br /> McPhee, Vallecito, and Lemon reservoirs totaled 98% of - ,.,, <br /> normal as of the end of September. 2 r `=__ <br /> r:, <br /> September was very dry in southwestern Colorado. A 1 <br /> r, <br /> i1-; , , i t— 1, ' <br /> heavy rain storm at the end of the month kept September's _. o i_— 1 . Y � <br /> precipitation averages from falling below 50% of normal. 1 ' _ �''"'� <br /> J, <br /> When rains fell later in the month the ground was very dry r <br /> and absorbed much of the water. Durango received 16.7 -2- - .� , <br /> 4 <br /> inches of precipitation (84% of average) for the entire water -3- - f i <br /> year (Oct. 1, 1997 - Sept. 30, 1998). Temperatures were -4 , <br /> JAMB JANBO JAN11 JAN22 JAN93 JAN24 JANBS JAN3C JANo7 JANOB <br /> warm, with lows being 9° above the average low. No freeze is:NT„/YEA, <br /> was experienced in Durango, or many of the surrounding <br /> areas, and the lowest temperature in town was 37°. <br /> Outlook <br /> Prospects were somewhat promising for more ANIMAS RIVER NR. DURANGO <br /> precipitation as the month ended with urricane and gulf 1 FLOW BY WATER YEAR <br /> moisture moving into the area. However,the overall dry trend 0.9 �° <br /> has not apparently changed. <br /> I 0.7 <br /> Administrative/Management Concerns <br /> n 0.1 - <br /> Reservoir storage was used extensively during o I o.s <br /> September and the large irrigation projects were reduced to .- <br /> v 0.4 <br /> ess than half of their storage capacity. Many streams stayed 3 <br /> on administration and were strictly regulated. The La Plata 1 0.3 <br /> River at Heperus gage averaged 6.5 cfs during the entire 0.2 - . <br /> month, which was near the historic low flow, and brought <br /> back memories to basin administrators of the drought of 1996. o <br /> Oct Noy Dan Jan Feb Lerch April Hey Jun. July Aug Sspt <br /> Pond storage was reduced in areas under call. lc.,„I <br /> O WET C1173) 0 CRY C1177) ♦ AVG N 11/1 <br /> REPRESENTATIVE RESERVOIRS <br /> DOLORES-ANIMAS RIVER BASINS <br /> 230 \\\ <br /> 280 <br /> 240 <br /> 220 <br /> .14; 2C°_//\\\ <br /> 1B0 <br /> cn <br /> •i 1B0 <br /> el�g 140/.\ <br /> $41 12n <br /> . 100 <br /> n <br /> I ..,A, <br /> ,, - <br /> 4. <br /> o /\ , ��\\\. <br /> Mph.. V.I l.clto Limon <br /> ® Avg. 1/30 Centro. ® vamIS*mums.. <br /> l <br /> 9 <br />