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Charles D. Whiteman

Publications and source records attributed to Charles D. Whiteman.

5 recordsLinked to original sources
USGS1986

Generalized potentiometric surface of the Catahoula aquifer in central Louisiana, 1980

Generalized contours of the altitude of water levels in wells completed in the Catahoula aquifer in central Louisiana, are illustrated by this map. Most water level measurements used in compiling the map were made in 1980; however, in parts of the State where water levels from 1980 were unavailable and where evidence indicated little change in water level, some measurements from as early as 1961 and as late as 1982 were used. Groundwater levels in and near the outcrop areas fluctuate 2 ft or less yearly and no significant long-term declines have occurred. The slow downward trend in water level altitude since early 1976 may be caused by pumpage from the Catahoula aquifer by a rural water system approximately 3 miles away. Recharge to the Catahoula aquifer occurs by rainfall on the upland outcrop-subcrop areas. Saltwater occurs throughout the Catahoula aquifer downgradient from the outcrop area. The ' approximate limit of freshwater ' line on the map indicates the downgradient limit of water with a concentration of chloride < 250 mg/L; the line was determined using water quality data and analysis of resistivity curves from geophysical well logs. Water from the Catahoula aquifer is used for municipal, industrial, and domestic purposes. Total pumpage from the aquifer in Louisiana was slightly over 1.1 million gallons/day in 1980. Local cones of depression result from pumpage just east of Anacoco in Vernon Parish and northwest of Jonesville in Catahoula Parish. (Lantz-PTT)

Louisiana↗
USGS1985

Generalized potentiometric surface of aquifers of Pleistocene age, Southern Louisiana, 1980

A map of potentiometric surface defines generalized water levels for 1980 in the Pleistocene aquifers of southern Louisiana. The map was prepared as part of the Western Gulf Coast Regional Aquifer-System Analysis study. The Pleistocene deposits in southern Louisiana consist of alternating beds of sand, gravel, silt, and clay deposited under fluvial, deltaic, and near-short marine conditions. The aquifers are mainly under artesian conditions and the regional flow direction is primarily southward. Areally definable cones of depression result from heavy pumpage in the Baton Rouge, Lake Charles, and New Orleans metropolitan areas and in the rice irrigation area of southwestern Louisiana. Where water levels differ vertically within the aquifer, the lowest water levels in the vertical section were used because these levels represented the thickest and most heavily pumped unit in the aquifer. The map represents regional water levels in the Pleistocene aquifers, and is not intended to show localized variations near pumping centers. (USGS)

Water-Resources Investigations Report↗
USGS1985

Generalized potentiometric surface of the Evangeline and equivalent aquifers in Louisiana, 1980

A generalized potentiometric-surface map defines the altitude of water levels for 1980 in wells in the Evangeline aquifer in southwestern Louisiana and stratigraphically equivalent aquifers in southeastern Louisiana. The Evangeline and equivalent aquifers increase in thickness from zero at the northern edge of the outcrop/subcrop belt to more than 2,000 feet along the southern limit of fresh water. The aquifers are recharged by rainfall on the overlying upland terrace deposits of south-central Louisiana, southeastern Louisiana, and southwestern Mississippi. The aquifers are under artesian conditions except locally in the recharge areas. The regional flow direction is primarily southward. Water levels in wells in the Evangeline aquifer are lowered by heavy pumping from the overlying Chicot aquifer in Evangeline and Acadia Parishes. Areally definable cones of depression result from pumpage from the Evangeline and equivalent aquifers in and near Baton Rouge, Eunice, and Ville Platte. Water levels may differ vertically within the aquifer near pumping centers. The map does not account for localized distortion of the regional flow pattern near these centers.

Louisiana↗