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<br />o <br />C'-: <br />.... <br />W <br />""'"'" <br />o <br /> <br />fairly c08prehensive reports have been prep~red, while in others the data is ' <br />only fragmentary. There is not sufricient data available on ground water <br />quality to serve as a criteria for specific projects in all cases and a <br />stu<i~' of ground water quality in connection with -oho planning of projects <br />is indicated. Quality of water is not generally a limiting factor on use <br />of p"round 'water in Eastern Kansas, Oklahoma, or Texasj or in the ea:3tern <br />portion of the area under stu~J in Eissouri, Arkansas or Louisiana, <br /> <br />Although much additional infonnation is needed, studies already made <br />have shown -ohat large amounts of hal'd but otherwise bood quality ground <br />water are available in each basin. In the upper portions of the Arkansas <br />and Red basins, particularly in the High Flains, grou,,-d water satisfactory <br />for irrigation and other uses is found in large amounts. In New ~exico, <br />ground waters in the Canadi~~ (North and South) River basin and the Cimarron <br />River basin are contaminated bacteriologically only in a very local nature. <br />However, adverse chemical characteristics limit usage in some areaS. High <br />fluoride and chloride contents are present in the vicinity of Springer, J:ew <br />Eexico. Hardness and high nitrate content are also limiting factors,in <br />parts of these draina~e basins. <br /> <br />To the east of the High Plains in the area 1L~dcrlain by Permian <br />rocks, only limited amounts of hard gro1L'ld water which is often high in <br />chlorides and sulfates can be found. Ground water in much of the 10\'l8r <br />Arka'lsas and parts of the Red River Valley is high in chlorides, which is <br />the result of natural salt deposits and not con'orollable pollution. To <br />the east of the Permian basin in Texas and Oklaho!1'a and extendin~ into <br />Kansas is an area "ihere considerable quantities of low to moderately <br />mineralized but freque!ltly soft ground water is obtained. <br /> <br />. <br /> <br />" <br /> <br />Ordinarily, lead and other toxic metals are not present in siV'ifi- <br />cant quantities in o:ny of the ground water available in the M/R basins. <br />Fluoride, the substance which, if present in excess of about 1,5 ppm, <br />causes dama~e to the teeth of children using the water for extended periods <br />of time, is a limiting characteristic from the standpoint of city and farm <br />'ground water use in sorr,e areas of the b,.sir... Colorado, Hew Mexico, Texas, <br />Kans>ls, l!.issouri, Oklhhoma and Arkansf,s have reported the presence of d!UTl- <br />aging concentr&tions of fluoride in certain grotmdwater supplies. As an <br />example of how this substance can influence the use of water resources, <br />the following case history is presented. Chetopa, Kansas, located Oll the <br />Grand (Neoeho) River near the KonsEls-Oldahona state line, orie;inally ob- <br />tained its city water sU"ply from a deep well. Use of this water, vir.Lch <br />contained an excessive amount of fluoride, over a period of years seriously <br />damaGed the teeth of the children in the community. In the late thirties, <br />this water supply Vias abandoned in favor of a supply obtained frOlIC the <br />Neosho River which is low in fluoride. La,;ton, Oklahoma also was forced <br />to abandon a well water supply because of fluorides up to 13 pp~. <br /> <br />, <br /> <br />Alluvial deposits where recharGe em., be induced from streo.ms occur <br />in each state. Quality of water producod from wells in the alluvinl de- <br />posits varies c,omewhat depending on the amount of recharbe, but generally <br />resembles the ~ra[e quality of the streams fron which recharbe occurs, <br /> <br />5-4 <br />