HA 730-H Columbia Plateau regional aquifer system

GROUND WATER ATLAS of the UNITED STATES
Idaho, Oregon, Washington
HA 730-H

Columbia Plateau regional aquifer system

Figure 69 Map showing location of the Columbia Plateau regional aquifer system
Figure 70 Map showing areal extent of the Grande Ronde Basalt
Figure 71 Cross-section showing unconsolidated-deposit aquifers in the Columbia Plateau
Figure 72 Cross-section of the Columbia Plateau regional aquifer system
Figure 73 Generalized cross-section of the northwestern part of the Columbia Plateau regional aquifer system
Figure 74 Map showing thickness of the unconsolidated-deposit aquifers
Figure 75 Map showing estimated hydraulic conductivity of the unconsolidated-deposit aquifers
Figure 76 Generalized section near the eastern margin of the Columbia Plateau regional aquifer system
Figure 77 Map showing thickness of the Wanapum Basalt
Figure 78 Map showing thickness of the Saddle Mountains Basalt
Figure 79 Map showing general direction of ground-water movement in the Grande Ronde Basalt
Figure 80 Map showing general direction of ground-water movement in the Wanapum Basalt
Figure 81 Map showing general direction of ground-water movement in the Saddle Mountains Basalt
Figure 82 Map showing predominant aquifers in the Columbia Plateau regional aquifer system
Table 4 Table showing ground-water conditions in the Columbia Plateau