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• <br /> AR CANSAS BASIN August, 1998 <br /> Basinwide Conditions Assessment: <br /> The SWSI value of 1.1 indicates that for July the basin ARKANSAS R I VER BAS I N <br /> water supplies were slightly above normal. Flow at the gaging s Surface Water Supply Index Hlttory <br /> station Arkansas River near Portland averaged 1,824 cfs, as 4_ <br /> compared to the long term average of 1,664 cfs. Storage in F, � <br /> Turquoise, Twin Lakes, Pueblo, and John Martin reservoirs ._ -A_ <br /> totaled 171% of normal as of the end of July. 2- • = <br /> r w r— <br /> ikt= <br /> i5 r i <br /> 11111 E <br /> -2- ' <br /> o - <br /> -3- <br /> JAn99 JAN90 JAN91 JAN92 JAN93 JAN94 JAN95 JAN96 JAN97 JAMS <br /> MOIRWYEAR <br /> ARKANSAS RIVER NR. PORTLAND <br /> FLOW 19Y WATER YEAS <br /> 1 <br /> 0.9 - <br /> a.9 <br /> r <br /> I 0.7 <br /> = <br /> O.5 <br /> LL- <br /> g 0.� 4 <br /> 1 0.3 , <br /> 0.2 <br /> 0.1 <br /> 0 <br /> Oct Nov O.c Jan Feb March Apr I Way June July Auo Slept <br /> MONTH <br /> 0 WET[1994) O COY[1977) O AVG X 1999 <br /> REPRESENTATIVE RESERVOIRS <br /> 260 ARKANSAS RIVER SASIN <br /> 240- <br /> 220- <br /> Sac <br /> M <br /> 190- <br /> r L 160 <br /> ` 140- <br /> h <br /> ea <br /> 4 ff o <br /> 0 _ \ /2\\ A\\ \ <br /> John Martin Pueblo TIYquolp Twin Lek's <br /> ® AVq. 7/31 Lon ® 7/3V99 Content, <br /> 4 <br />