HA 730-H Regional summary

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

Regional summary

(figures 1-21)

Introduction (Click to view thumbnails and download figures)

Figure 1 Map showing privately owned land
Figure 2 Map showing irrigated land
Figure 3 Map showing annual precipitation
Figure 4 Map showing annual runoff

Areal Distribution of Aquifers (Click to view thumbnails and download figures)

Figure 5 Map showing aquifers in segment 7

Structural Basins and Aquifers

Figure 6 Cross section showing structural basins in Washington
Figure 7 Cross section showing synclinal basin in eastern Oregon
Figure 8 Cross section of Basin and Range in south-central Oregon showing major faultlines
Figure 9 Cross section of unconsolidated basaltic rock in the Snake River Plain aquifer
Figure 10 Cross section of unconsolidated-deposit aquifers in the Snake River Plain

Geology (Click to view thumbnails and download figures)

Figure 11 Map showing distribution of rock types

Ground-Water Occurrence and Movement (Click to view thumbnails and download figures)

Figure 12 Cross section showing recharge from adjacent basins
Figure 13 Cross section showing hydraulic connection between aquifers and streams
Figure 14 Map showing major geologic features affecting ground-water movement

Water-Level Fluctuations (Click to view thumbnails and download figures)

Short-Term Fluctuations

Figure 15 Hydrograph showing ground-water level fluctuations
Figure 16 Graph showing short-term ground-water fluctuations

Long-Term Fluctuations

Figure 17 Graph showing long-term ground-water fluctuations

Ground-Water Quality (Click to view thumbnails and download figures)

Table Table showing hydrogeologic framework
Figure 18 Map showing dissolved-solids concentrations in ground-water

Fresh Ground-Water Withdrawals (Click to view thumbnails and download figures)

Figure 19 Chart showing fresh ground-water use
Figure 20 Map showing fresh ground-water withdrawals
Figure 21 Chart showing major ground-water withdrawal sites

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