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N1 <br /> SAN JUAN/DOLORES/ANIMAS BASIN <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 2.2 indicates that for February SAN JUAN/DOLORES/AN I MAS R I VER BASINS <br /> Slrf•ce hater Supply Index Hletary <br /> basin water supplies were above normal. The Natural 5 <br /> Resources Conservation Service reports March 1 snowpack as 4_ <br /> 108% of normal. Storage in McPhee, Vallecito, and Lemon . <br /> reservoirs totaled 109% of normal on February 28. Flow at 3- . ; <br /> the gaging station Animas River near Durango averaged 321 2- , <br /> cfs as compared to the 1961-1993 February average of 211 cfs. 1 1 . ; r <br /> The National Weather Service computes basin precipitation as g 0 •i,�.• �M ��, .,I. ' ,,' Ii r <br /> 91% of normal during the month. _ w <br /> While snowpack conditions in southwestern Colorado 2 k <br /> continue to be better than much of the rest of the state, - ✓ <br /> February brought reductions in the snowpack. Around -3 r - <br /> Durango snowpack decreased from 128% of normal at the -4 <br /> JANBE JAN87 JAN98 JANE9 JAN90 JAN91 JAN92 JAN93 JAN94 JAN9S <br /> beginning of the month to around normal at month's end. MONTH/YEAR <br /> Lower elevation snow melted early due to warm temperatures <br /> which were 7° to 8° above average. Muddy conditions were <br /> seen all month and soil moisture remained high. February's <br /> temperatures were comparable with those normally seen a <br /> month later. AN I MAS R I VER NR. DURANGO <br /> River flows remained near normal base levels 190 FLOW By WATER YEAR <br /> although the Animas and some surrounding streams showed 1B0 <br /> 170 <br /> increases toward the end of the month. This was unusual, 160 - <br /> 1S0 <br /> and was likely caused by the low elevation snowpack melt. i 140 <br /> Red Mesa Ward Reservoir filled a month earlier than 120 <br /> `� 120 <br /> expected. Other off-stream reservoirs were unable to take the :1 110 <br /> s: 1Do <br /> increased flows due to snow and mud conditions in the W g 90 �` <br /> so <br /> ditches. Small increases in storage were seen at the large s" <br /> 70 <br /> reservoirs,although Vallecito gained a significant amount and 1 60 — <br /> carried 78,000 acre-feet into March. ,o _tom <br /> 30 �� <br /> 2D <br /> Outlook 10 <br /> Dct Nor Oec Jen Feb moron <br /> Anticipation is bright among basin administrators for 47N,H <br /> n WET C1973) 0 DRY C1977) 6 AVG X 1395 <br /> a good water year. <br /> REPRESENTATIVE RESERVOIRS <br /> DOLORES-ANIMAS BASINS <br /> 250 - -- -- -- - -- <br /> oso N.- <br /> 240 V <br /> zzD:///"\\ <br /> • <br /> 200..///\\ <br /> 180/\ <br /> L <br /> V rl <br /> r�I 160 <br /> .c <br /> a n 140 <br /> o� <br /> $,1 120-,././://." <br /> •u 100 <br /> fl <br /> 80 7\ <br /> 60 <br /> 40 r <br /> 20 <br /> 0 /\\ V /-\ N <br /> W CPhe* V*i l e0 i t0 LOIN., <br /> ® Arq. 2/29 Gunton!• ® 2128/95 Content* <br /> 9 <br />