HA 730-J Silurian-Devonian aquifer

GROUND WATER ATLAS of the UNITED STATES
Iowa, Michigan, Minnesota, Wisconsin
HA 730-J

Silurian-Devonian aquifer

Figure 74 Correlation chart describing characteristics of the Silurian-Devonian aquifer in Iowa
Figure 75 Correlation chart describing characteristics of the Silurian-Devonian aquifer in Wisconsin
Figure 76 Correlation chart describing characteristics of the Silurian-Devonian aquifer in Michigan
Figure 77 Map showing areas of the Silurian-Devonian aquifer that are unconfined and those areas that are overlain by younger rocks
Figure 78 Map showing location of karst features in the Silurian-Devonian aquifer in Iowa
Figure 79 Map showing location of karst features in the Silurian-Devonian aquifer in Michigan
Figure 80 Generalized block diagram showing the aquifer systems in Iowa
Figure 81 Map showing the altitude of the base of the Silurian-Devonian aquifer contour in Iowa and Wisconsin
Figure 82 Map showing potentiomentric surface of the Silurian-Devonian aquifer in Iowa and Wisconsin

Figure 83 Hydrograph of well completed in the unconfined part of the Silurian-Devonian aquifer at Cedar Rapids
Figure 84 Hydrograph of well completed in the confined part of the Silurian-Devonian aquifer at Dayton
Figure 85 Map showing probable yield of water to wells in the Silurian-Devonian aquifer in Wisconsin

Figure 86 Map showing dissolved solids concentrations in water from the Silurian-Devonian aquifer
Figure 87 Map showing sulfate concentrations in water from the Silurian-Devonian aquifer in Iowa
Figure 88 Graph showing chemical constituents in water from the Silurian-Devonian aquifer in Michigan
Figure 89 Map showing relative amounts of dissolved-solids in water from the Silurian-Devonian aquifer in Michigan

Figure 90 Pie charts showing principal uses of fresh ground-water withdrawals from the Silurian-Devonian aquifer