HA 730-F Surficial aquifer system

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

Surficial aquifer system

(figures 23-45)

Introduction (Click to view thumbnails and download figures)

Figure 23 Map of surficial aquifer system

Mississippi River Valley alluvial aquifer

Hydrogeology (Click to view thumbnails and download figures)

Figure 24 Diagramatic section showing Holocene, Pleistocene, and Sedimentary deposits
Figure 25 Map showing thickness of confining unit
Figure 26 Map showing thickness of aquifer
Figure 27 Hydrogeologic cross sections

Relation between geology and permeability (Click to view thumbnails and download figures)

Figure 28 Map showing sand and gravel
Figure 29 Map showing estimated hydraulic conductivity

River-Aquifer interaction (Click to view thumbnails and download figures)

Figure 30 Diagramatic section showing ground-water movement
Figure 31 Hydrographs of stream stage of the White, Cache, and L'Anguille Rivers
Figure 32 Diagramatic section showing ground-water movement
Figure 33 Map showing Water-level decline from spring to fall in 1965

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

Figure 34 Potentiometric contour map
Figure 35 Potentiometric contour map

Well yield, pumpage, and long-term water-level decline (Click to view thumbnails and download figures)

Figure 36 Hydrographs of selected wells
Figure 37 Photo of well
Figure 38 Graph showing rates of ground-water pumpage for select counties
Figure 39A Map showing pumpage from wells during 1940
Figure 39B Map showing water-level decline from 1900 to 1942
Figure 39C Map showing pumpage from wells during 1960
Figure 39D Map showing water-level decline from 1900 to 1962
Figure 39E Map showing pumpage from wells during 1980
Figure 39F Map showing water-level decline from 1900 to 1982

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

Figure 40 Map showing dissolved-solids concentration

Fresh ground-water withdrawals (Click to view thumbnails and download figures)

Figure 41 Chart showing the use of fresh ground-water withdrawals during 1985
Figure 42 Graph showing total ground-water withdrawals between 1960 and 1980

Stream-valley alluvial aquifers (Click to view thumbnails and download figures)

Figure 43 Hydrogeologic cross section
Figure 44 Graph showing depth to water near the Dardanelle Reservoir from 1958 to 1972
Table 1 Table listing aquifer characteristics
Figure 45 Chart and table showing the chemical concentrations for the Arkansas River alluvial aquifer

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