Figure 18. Middle groups of wells near the Washington State Department of Ecology administrative areas in parts of the Palouse Slope/eastern Yakima Fold Belt and the Columbia Basin Ground Water Management Area, Washington. Hydrographs depict the winter median water levels for individual wells within each well group and the trend line representing the overall water-level trend of all wells in the group. Well locations are shown in figure 15.

First posted February 5, 2013