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<br />a <br />(-., <br />~ <br />w <br />l'-) <br />w <br /> <br />There are 67 sewered communitiee serving an estimated 515,074 persons. <br />Of the 67 sewer~d ccmmunities, 10 with a population of 209,334 (41%) provide <br />no treatment, Of the 61 plants serving 57 communities, 38 plants, serVing <br />233,235 (45%), are considered inadequate as to capacity. <br /> <br />studies should be made on a daily sampling basis before any particular <br />stream is either accepted or rejected as a source of water supply. A daily <br />slUnpling progre.m mi1;ht indicate that with impoundment, highly mineralized <br />law flow would be sufficiently diluted with fresh water during storm run-off <br />to be sati,sfactory for general usage. <br /> <br />The few daily sampling stations in this river basin have not been in <br />operation long enough to provide satisfactory quality data on which to base <br />plans for the construction of reservoirs, <br /> <br />Washita River Basin <br /> <br />In the upper drainage of the Washita River in the High Plains small <br />quantities of good quality water might be developed for local use, The <br />uppermost record of mineral quality in the Washita basin is at the dam site <br />near Foss, Oklahoma. At that point gypsum derived from rocks of Permian <br />age is the principal substance present in the river water. Records show <br />that inflow from Pond Creek is less mineralized than the Washita River water <br />and contains little gypsum. Rush Creek ,carries more gypsum than Pond Creek, <br />but less than the Washita in its upper reaches. Records on the Washita at <br />Tabler and Durwood, Oklahoma show that during high stage-s the Washita carries <br />proportionately much less sulfate than at low flow. Fragmentary information <br />indicates surface water impounded in the Washita basin will be satisfactory <br />for municipal, irrigation and industrial use. There ar~ some problems of <br />pollution, but these are in process of being solved, soil erosion is a <br />problem in this watershed and affects water quality, Intensive effort is <br />being applied to the solution of soil erosion problems in this area. <br /> <br />Ouachita River Basin <br /> <br />.' <br /> <br />The Ouachita River rises in the Ouachita Mountains in Western Arkansas <br />and flows southeast through the state discharging to the Black and Red Rivers <br />in Louisiana. This stream drains the major portion of South Arkansas, pol- <br />lution of the Ouachita River is localized in nature, Several cities within <br />the State discharge partly treated or untreated sewage to this river, The <br />mining and processing of barite in the area of Malvern and Magnet Cove affords <br />an acid waste problem, which has oaused localized trouble in the Ouachita <br />River in this area. Industries located along the Ouachita River are the paper <br />mills at Cs:mden and Crossett, Arkansas, The waste from the Camden Paper l4ill <br />is lagooned and discharged in proportion to the river flow, Waste at the <br />Crossett Mill is afforded trea'bnent by being diverted through a lagoon, then <br />discharges to the river. Another source of waste enter:i.ng the Ouachita River <br />is mine drainage from the Bauxite area which enters the river by way of <br />Hurricane Creek and Saline River. Oil fields in South Arkansas in Village. <br /> <br />5-17 <br />