HA 730-F Ozark Plateaus aquifer system

GROUND WATER ATLAS of the UNITED STATES
Arkansas, Louisiana, Mississippi
HA 730-F

Ozark Plateaus aquifer system

(figures 94-113)

Introduction (Click to view thumbnails and download figures)

Figure 94 Map showing the Ozark Plateaus aquifer system
Figure 95 Outcrop map of the Ozark Plateaus
Figure 96 Correlation chart
Figure 97 Hydrogeologic cross section
Figure 98 Hydrogeologic cross section

Hydrogeologic units

Springfield Plateau aquifer (Click to view thumbnails and download figures)

Figure 99 Map showing thickness of the Springfield Plateau aquifer

Ozark aquifer (Click to view thumbnails and download figures)

Figure 100 Map showing thickness of the Ozark aquifer
Figure 101 Map showing dissolved-solids concentration
Figure 102 Map showing hydrochemical facies

St. Francois aquifer

Ground-water flow (Click to view thumbnails and download figures)

Figure 103 Maps showing altitude of land surface and altitude of water in tightly cased wells
Figure 104 Map showing potentiometric contours

Solution features (Click to view thumbnails and download figures)

Figure 105 Photo of sinkhole
Figure 106 Map showing distribution of sinkholes in rocks
Figure 107 Photo of Mammoth Spring
Figure 108 Map showing water-tracing studies in the Mammoth Spring area

Geologic factors that control permeability (Click to view thumbnails and download figures)

Figure 109 Diagramatic section
Figure 110 Map showing structure contours
Figure 111 Maps showing estimated specific capacity of the Roubidoux Formation and Gunter Sandstone Member
Figure 112 Photo of vertical fractures in low-permeability carbonate bedrock
Figure 113 LANDSAT color infrared composite image of northern Arkansas

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