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<br />SAN JUAN/DOLORES BASIN <br /> <br />I Basinwide Conditions Assessment <br />The SWSI value of 2.8 indicates that for July the <br />basin water supplies were above normal. Flow at the gaging <br />station Animas River near Durango was 1,864 cfs, as <br />compared to the long-term average of 1,149 cfs. Storage in <br />McPhee, Vallecito, and lemon reservoirs totaled 123% of <br />normal as of the end of July. <br />Warm air masses brought intermittent moisture to <br />southwestern Colorado during the whole month of July. <br />Thunderstorms developed across the San Juan and Dolores <br />drainages causing many flash floods. Precipitation in <br />Durango was 3.62 inches, 182% of normal. Cumulative <br />precipitation for the water year, since last October 1, has <br />exceeded the average. <br />Although river levels remained high for the month, <br />most rivers were not near flood stage. The flooding that did <br />occur was on side streams. <br />Reservoirs were nearly spilling or very full across the <br />basin. Red Mesa Ward Reservoir retained more water than <br />usual on the la Plata River. <br /> <br />Outlook <br />The water outlook for the year has turned to <br />excellent and it is anticipated that much water will be carried <br />over into next year. <br /> <br />Administrative/Manaaement Concerns <br />Many streams were nearly off call with excess water <br />running to New Mexico. Over deliveries were common under <br />the la Plata River Compact. <br /> <br />Public Use Imoacts <br />The wet weather was good for growth of crops but <br />spelled disaster on may hay cutting operations which were <br />unable to find a dry spell to bale good hay. <br />Many mud slides were started and the turbidity of <br />intake waters was the cause of. concern for some of the <br />drinking water suppliers. Durango was considering rationing <br />in order to handle water treatment requirements, which were <br />strained from the silt load in the Florida River. <br /> <br />Aug-99 <br /> <br />lWl.J.JlliNCCl..CR BASlNSWll HSJ(Rf <br /> <br /> <br />.... <br />~ 2 <br /> <br />w <br />3, <br />~ <br />~ 0 <br />~ <br /> <br />> -1 <br />a: <br />o <br />-2 <br /> <br />.;! <br /> <br />-4 <br />JaMIlJan.91..B>!ll.&>mJlr>.ll4JarH16JarH16J!n.97J;r>ll1lJirl.ll9 <br />M)\IIH/YEAR <br /> <br />ANMAS RlIIER tR CLRANOO, Fl.CM' BY VIIO.TER '/El\R <br /> <br /> l,ooo.an <br /> lIOO,an <br />1l 8lO,an <br />... <br />~ 7OO.an <br />~ BlO,an <br />... soo.an <br />w <br />~ 4OO.an <br />S <br />::l 3OO.an <br />:::; <br />::l 2llO,an <br />(.) <br /> 10ll.an <br /> <br /> ----' <br /> ) ~ <br /> /' <br /> / <br /> / / --- -- <br /> /, y <br /> / /' I <br /> v/ <br /> ~ ...__v I...-- ;:;;:; <br /> - -- <br />~ <br /> <br />o <br />Ott I'bi Dee .Ia1 <br /> <br />FebMirth~MIy.ue.lJyhlgSepl <br /> <br />-e- VIET" (1973) <br /> <br />-+-[RY (1977) <br /> <br />....-AVG <br /> <br />.....1999 <br /> <br />~Fe1RQF6 <br /> <br /><mlXD <br /> <br /> <br />3'l\lXD <br /> <br />3Xl,lXD <br />a; <br />.!! <br />; 2lJ,lXD <br />.. <br />.. <br />~:m.lXD <br />o <br />Iii <br />~~lXD <br />~ <br />::l <br />1OO,lXD <br /> <br />9l,lXX) <br /> <br />o <br /> <br />Mftee <br /> <br />'IoIlIedO <br /> <br />IBnn <br /> <br />-"0 7131 anons <br /> <br />lI_anons <br /> <br />9 <br />