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State Water Resources Commission observation well readings
47 other sections not shown
alluvium Alluvium Qal aquifer bedrock bentonite beds Big Sioux River blue brown buried glacial outwash buried outwash deposit calcareous Cary cd cd cd Choteau Choteau Creek coarse concretions Coteau des Prairies Coteau du Missouri County Cretaceous dark-gray drift end moraine feet thick Flint fM fM Fox Hills Formation Geological Survey Geology glacial outwash deposit gray ground moraine Huron Huron-Wolsey area irrigation pumping kettle holes Lake layers limestone loess lower buried glacial lower buried outwash miles Missouri Plateau Missouri River Mobridge Montgomery Location Niobrara occur physiographic province fig Pierre Shale Pierre Shale-Upper piezometric piezometric surface Plains physiographic province Pleistocene and Recent Q Q Q quadrangle Recent deposits Resources Commission observation sand and gravel sandstone sandy silt silty soil South Dakota static water level Surface Elevation Topography and Drainage U. S. Highway underlain undifferentiated upper valley Verendrye Virgin Creek Member Wagner area Water Resources Commission weathers zone