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<br /> <br /> <br /> <br />o <br />(.."") <br /> <br />point 18 not good, partly because o~ oilfield wastes cont,...inAting the floW' <br />o~ tributaries upstreNII and also because of hi~ m1peralized intloW' <br />from salt marshes on tributaries near llutch1n.son, as well as the industrial <br />waste ~rom salt works. Mineralization continues to increase downstream due <br />to intlOW' ~rOll streams carrying oilfield, industrial, and 1IIUJ11cipal wastes <br />as well as natural sod1um chlorides. <br /> <br />~ <br />N <br />en <br />-.J <br /> <br />No IIIUJ11c1pal supplies are obtail1ed directly trOlll the Arkansas River in <br />Kansas or QlrJ"hmM. Supplies are pumped ~rom the alluvium for Buteh1nBon <br />and Arkansas City; from a deep aquifer tor Garden City; and trom glacial <br />outwash filling a buried valley, tor Wichita, where pumping for the IIIlIIl1c1- <br />pal supply alone averages about 30 million gll.llons per day. There are <br />also several 1mportant ground-water dt!'l'elopmentB for irrige.tion all along <br />the valley ~rom the Colorado State line to Great Bend. <br /> <br />Studies of ra1ntall records in Kansas indicate that the mean annual <br />raiDf'all ~or the period of stream-~lOW' recorda from 1923 is about the <br />Bame as the mean tor the period tram 1890 to date, and it ill noted that <br />the loW' raintall o~ the 1930's 18 nearly matched by drought periods in the <br />1890's and 1910-1~. <br /> <br />2-3 <br />