Figure 19. Groups of wells corresponding to the southern flow path 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. An additional hydrograph for a proximal group of wells (group 12) is shown to illustrate the relation between well groups. 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 and flow paths are shown in figure 15.

First posted February 5, 2013