Raster grid of upland chert gravel deposits (Olpe soil) in eastern Kansas, according to township-and-range grid. Each pixel represents one quarter section in area (0.25 mile², 0.65 km²); pixels are color coded according to elevation classes. Numbers indicate man-made reservoirs: 2 = Pomona, 3 = Melvern, 5 = Marion, 6 = John Redmond, 7 = El Dorado, 8 = Toronto, and 9 = Fall. Also see counties and drainage basins.
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