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<br />-J <br /> <br />n '!o'';: l'Y.., / <br />''..J :.) .... .:' " 'i <br /> <br />SAN J UAN/DOLORES BASIN <br /> <br />Feb-02 <br /> <br />Basinwide Conditions Assessment <br />The SWSI value of ':"'2.6 'indicates that for January <br />the basin water supplies were below normal. The Natural <br />Resources Conservation Service reports that February 1 <br />snowpack is 51 % of normal. Flow at the gaging station <br />Animas River near Durango was 178 cfs,_ as compared to <br />the long.term average of 211 cfs. S~orage in McPhee, <br />Vallecito, and Lemon reservoirs totaled 75% of~ormal as of <br />the end of January. <br /> <br />Outlook <br />In some years, January is the main snow month. <br />The average precipitation in Durango during the month - is <br />about 2.0 inches; one of the year's highest. This year only <br />0.06 inches were recorded in Durango, making it the worst <br />January on record. <br /> <br />The snowpack declined with respect to normal and <br />stood at 52% across the San Juan and Dolores River <br /> <br />drainages with the best courses being in San Juan County <br />and the Upper Dolores. Arohuleta~Mineral-Hinsdale county <br />areas were witnessing around 33% of normal. The water <br />year to date was running less than half of normal. River <br />flows were running below normal. The Animas River in <br />Durango was only 170 cfs at the end of the month. <br />Reservoir storage remained about the same but lemon <br />reduced its outflow to prevent more storage foss. <br />Temperatures were about normal but a few degrees above <br />normal lows as Durango reached a minimum of _10 F on <br />January 19th. Several days were reduced to single digits. <br />Prospects were not good for increases or changes in <br />weather as the whole state was suffering shortages. Storms <br />poised for north or south of the area as high pressure <br />dominated, <br /> <br />So\III~SASlNSVt51 HSTCRY <br /> <br />;:. -~ <br /> <br />5 -..---- --------- .-- ..--- --"-- <br /> <br /> <br />~ , <br />~ <br />~ 0 <br />j?; <br /> <br />)0 ., <br />a: <br />o <br />.2 <br /> <br />.;! <br /> <br />-4 -_. --.. -- <br />..In-lI2 Jinm ..In-91 Jaol.ll5 ..krt9Il ...rn ..krt9Il Jnll9 .IlnOO JnOt <br />l.OIni/~ <br /> <br />. .A/IWAS m.m toR D.JWIO:l RDN Bi' IMlER '\'BlR <br /> <br />2Sl.a:o ---.---...-.. - --. -. -.. .--- --_.._. -.----- <br /> <br /> <br />;w.a:o <br />" <br />d, <br />t; <br />~ f!D,a:o - <br />~. - <br />o. <br />It <br />~1<D.Ol) <br />~ <br />::l: . <br />::l <br />(.l <br /> <br />. - ~~ . <br /> <br />o <br />O:t <br /> <br />N>I <br /> <br />O;c <br /> <br />Rb <br /> <br />..m <br /> <br />MiRh <br /> <br />JlpI <br /> <br />.... v..er (1m3) <br /> <br />-+-lR((1rJ17} <br /> <br />_fJWG <br /> <br />*3XlZ <br /> <br />REPRESENTATIIIE RESER\IOIRS <br /> <br />250,000 <br /> <br /> <br />300,000 <br /> <br />Ii <br /> <br />1200,000 <br /> <br />,; <br />f 150,000 <br /> <br />III <br /> <br />1100,000 <br /> <br />50.000 <br /> <br />D <br /> <br />McPhee <br />.Ayg. 01131 Contents <br /> <br />Valledlo <br /> <br />L8mon <br /> <br />r.iI_01I31/02 ConIenis <br /> <br />9 <br /> <br />.j- <br />-L <br /> <br />