Jerry D. Stoner 1982 <p><span>Water-quality data through 1979 in the Washita River basin within </span><span>Oklahoma were examined for water type and suitability for public water </span><span>supply and for irrigation use. Of 82 stations with available data, 32 </span><span>stations or 39 percent were considered to have sufficient data for </span><span>analysis. The classification of water type was based on the relation of </span><span>the major ions: calcium, magnesium, sodium, carbonate, bicarbonate, </span><span>sulfate, and chloride to each other within the range of measured specific </span><span>conductance. The suitability for use as a public supply was based on </span><span>the concentration distribution of selected constituents. The constitu</span><span>ents selected were those with maximum contaminant levels established by </span><span>regulation, or constituents for which recommended maximum limits have </span><span>been established and for which historic data are available. The irriga</span><span>tion classification method of Wilcox </span><span>was </span><span>used to relate sodium, calcium, </span><span>and magnesium concentrations and the salinity distribution to the suita</span><span>bility for use of the water for irrigation. Where data were available, </span><span>the chance of phytotoxic effects by boron was discussed. </span></p> application/pdf 10.3133/wri8229 en U.S. Geological Survey Water type and suitability of Oklahoma surface waters for public supply and irrigation, Part 5: Washita river basin through 1979 reports