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SAN JUAN/DOLORES BASIN March, 1997 <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 3.5 indicates that for February the SAN JUAN/DOLORES RIVER BASINS <br /> sin water supplies were well above normal. The Natural 5 s�+.°'Meier Supply '"°'"""t�Y <br /> Resources Conservation Service reports March 1 snowpack as ,_ <br /> 146% of normal. Flow at the gaging station Animas River V _ . , <br /> near Durango averaged 256 cfs as compared to the long term 3 f r l t <br /> average of 211 cfs. Storage in McPhee, Vallecito, and Lemon 2 • - ft[- =:- <br /> reservoirs totaled 97% of normal as of the end of February. I 1- r ; ; 'r - ,- <br /> A total of 2.27 inches of precipitation fell in Durango i n r_ �' <br /> during February, which was 149% of average. Durango's - " ": �N <br /> seasonal snowfall total was only 4 inches shy of the all-time „'''', 'l s !' <br /> record set in 1978-1979. Daytime high temperatures in - -2 x <br /> Durango averaged 3.6° cooler than normal. 3- - h <br /> Most streams had returned to seasonal base flows by <br /> JAN90 JAN99 JAN90 JAN91 JAN92 JAN93 JAN94 JAN95 JAN96 JAN97 <br /> the end of the month. Significant storage increases continued A.,,,vrEAR <br /> in area reservoirs because of above average inflows and <br /> minimal downstream demand. <br /> Outlook <br /> Above average precipitation during February improved ANIMAS RIVER NR. DURANGO <br /> the water supply outlook for southwestern Colorado. 19O FLOW 9Y WATER YEAR <br /> 100 Al <br /> j� <br /> 170 - <br /> Administrative/Management Concerns 160 <br /> Area reservoirs are making plans for accommodating 1 „0 <br /> the expected heavy inflows. McPhee Reservoir has scheduled . ;a . <br /> staged increases in outflows, reaching a maximum proposed o'f 110 . <br /> release of 2,000 cfs in early May. LL 2 190 _.-----------' <br /> V 90 <br /> 1- <br /> 70 <br /> 50 <br /> 30 <br /> 20 <br /> 10 <br /> Oat Nov Doc Jan Feb March <br /> MONTH <br /> ❑ WET(1973) 0 DRY[1977) A AVG X 1997 <br /> REPRESENTATIVE RESERVOIRS <br /> 0010RES-ANIMAS BASINS <br /> 290 , <br /> 220 <br /> • 200_../7\ <br /> 1 1130,7.\\ <br /> 4r_ <br /> Vn <br /> 160 <br /> $5 140 <br /> .q lal:///:///2.\\\\\\\:\ <br /> iV <br /> 100 <br /> ; e0/..\\\ <br /> 60 <br /> 40 / <br /> 20 13 / \ <br /> McPhee VallocI20 Lemon <br /> Amp 2/26 ContentA ® 2/26/97 Canton. <br /> 9 <br />