Geology topics

R. E. Kidd

Publications and source records attributed to R. E. Kidd.

3 recordsLinked to original sources

USGS1989

Geohydrology and susceptibility of aquifers to surface contamination in Alabama; area 5

The U.S. Geological Survey, in cooperation with the Alabama Department of Environmental Management, is conducting a series of geohydrologic studies to delineate the major aquifers and their susceptibility to contamination in Alabama. This report delineates and describes the geohydrology and susceptibility of the major aquifers to contamination in Area 5--Chambers, Clay, Cleburne, Coosa, Lee, Randolph, and Tallapoosa Counties. Little groundwater is used for public water supplies in Area 5. Groundwater withdrawals for public supply in 1985 were 0.88 million gal/day. Most cities and towns that formerly used groundwater presently use surface water. None of the sedimentary rocks or unconsolidated deposits is tapped by public supply wells. None of the igneous and metamorphic rocks are considered a major aquifer because of low yields. Aquifers in the study area are susceptible to surface contamination throughout their entire outcrop area. Areas that are highly faulted and valley areas where groundwater is at or near land surface have potential to be highly susceptible to surface contamination. (USGS)

Water-Resources Investigations Report↗

USGS1988

Hydrogeology and water-supply potential of the water-table aquifer on Dauphin Island, Alabama

The water table aquifer on Dauphin Island, Alabama, consists of a thin veneer of Holocene sand and an underlying Pleistocene unit locally known as the Gulfport Formation. The aquifer is from 28 to 35 ft thick with a thick marine clay at its base. Water in the aquifer generally is low in chloride content except near the coast. Excessively high iron concentrations in groundwater were found locally. A two-dimensional finite-difference groundwater flow model of the water table aquifer on Dauphin Island was used in the steady-state mode to evaluate the flow system under steady-state conditions. Model input data were obtained primarily from 40 test wells, 2 aquifer tests, continuous recording of groundwater levels, and rainfall. The model was calibrated to the low water-table conditions of July 1985 and high water table conditions of April 1985. The model was also used to simulate pumpage from the aquifer under transient conditions with no rainfall. Patterns of computed head changes compared favorably to the natural recession of water levels for the periods of April to May 1985 and May to June 1985. Simulation of groundwater withdrawals in the transient model showed the feasibility of producing 0.6 million gallons/day from eight wells that tap the water table aquifer without inducing lateral seawater encroachment. (USGS)

Water-Resources Investigations Report↗

USGS1987

Geohydrology and susceptibility of major aquifers to surface contamination in Alabama; area 9

This report delineates and describes the geohydrology and susceptibility of the major aquifers to contamination in Area 9 - Barbour, Bullock, Macon, Pike, and Russell Counties. The major aquifers in the study area are the Tuscaloosa, Eutaw, and Providence-Ripley aquifers of Cretaceous age; and the Nanafalia-Clayton aquifer of Tertiary age. The five counties constitute the primary recharge area for the aquifers which are the source of public supplies in the study area. The total withdrawals of groundwater for all uses in 1986 were estimated to be about 14 million gallons per day. Areas of water level declines in the Tuscaloosa aquifer have developed near Eufaula and Union Springs. Water levels in the Eutaw aquifer have declined at Union Springs. All recharge areas for the major aquifers are susceptible to contamination from the surface. Shallow wells in the outcrop area are most susceptible.

Alabama↗