Acquisition Activity, Statistical Quality Control, and Spatial Quality Control for 1997 Annual Water Level Data Acquired by the Kansas Geological Survey

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Figure 4--Universal kriging estimation of water table elevation employing the original sampling. A cross denotes a well with a z-score below 2; a red dot, between 2 and 3, and a red triangle larger than 3. The solid blue line is the actual boundary of the High Plains aquifer and the segmented line the boundary of its non-contributing portion.

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