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Daphne Darden

Publications and source records attributed to Daphne Darden.

10 recordsLinked to original sources
USGS1987

Ground-water resources of Jones County, Mississippi

Jones County, Mississippi, is supplied with groundwater from aquifers in strata of Eocene and younger age. The largest groundwater withdrawals are from aquifers in the Catahoula Sandstone of the Miocene aquifer system that occur at depths of 200 and 400 ft in the Laurel area. Several public and industrial water supply wells obtain water from deeper Eocene strata that occur at depths of more than 900 ft. Pumpage from all aquifers in Jones County for all uses increased from < 1 million gal/day (mgd) in 1925 to a maximum of 21.6 mgd in 1975. The city of Laurel used about 6.2 mgd in 1984 and total water use for the county was about 14.1 mgd. The extreme irregularity of the sand beds that form the aquifers is reflected in the wide range in hydraulic characteristics. Transmissivity values range from 600 to 10,000 sq ft/day and average about 6,000 sq ft/day. The average hydraulic conductivity is about 90 ft/day. Water levels in key observation wells in the lower Catahoula aquifer at Laurel have declined from about 150 ft above sea level in 1945 to about 80 ft above sea level in 1985. Since 1975, water levels in the Catahoula aquifers in the Laurel area have declined at a slower rate, but the cone of depression has enlarged because of areal changes in pumping. Water in the major aquifers is usable for most purposes, and concentrations of common constituents do not exceed water quality criteria for drinking water supplies. Iron concentrations are highest in the Catahoula and Vicksburg aquifers, exceeding 0.30 mg/L in water from 33% of the wells for which data are available. Color is highest in the Eocene Cockfield aquifer, exceeding 50 units in water from 60% of the wells. Dissolved solids concentrations range from 487 to 840 mg/L in water from wells in the Cockfield and Sparta aquifers. The pH values generally are < 7.0 in water from wells in the Catahoula and Vicksburg aquifers and > 8.4 in water from wells in the Cockfield and Sparta aquifers. Hardness of water from all aquifers rarely exceeds 50 mg/L. (Lantz-PTT)

Water-Resources Investigations Report↗
USGS1986

Potentiometric map of the lower Wilcox aquifer in Mississippi, fall 1982

This potentiometric map is the second map of the lower Wilcox aquifer in a series of maps prepared by the U.S. Geological Survey in cooperation with the Mississippi Department of Natural Resources, Bureau of Land and Water Resources, delineating the potentiometric surface of the major aquifers in Mississippi. The potentiometric surface of the lower Wilcox aquifer slopes generally to the west away from the outcrop area and it is marked by a large groundwater cone of depression in the area of Tallahatchie, Quitman, and Panola Counties. Water levels in or near the outcrop of the lower Wilcox aquifer show little longterm change. Heavy withdrawals in the downdip area have caused water level declines of about 1 to 2 feet per year since 1979 in much of the confined part of the aquifer. These water level declines in the area of Tallahatchie, Quitman, and Panola Counties have resulted in a wider cone of depression since 1979. (USGS)

Water-Resources Investigations Report↗
USGS1986

Potentiometric map of the Cockfield Aquifer in Mississippi, fall 1984

This map, the second in a series for the Cockfield aquifer in Mississippi, follows a map that delineated the 1980 potentiometric surface of the aquifer. This water level map is based on water level measurements made in about 80 wells in the Cockfield aquifer in the fall of 1984. The contours show altitudes at which water levels would have stood in tightly cased unpumped wells in fall 1984. (Lantz-PTT)

Water-Resources Investigations Report↗
USGS1984

Potentiometric map of the Gordo aquifer in northeastern Mississippi, November and December 1982

The Paleozoic rocks that outcrop in Tishomingo County, Mississippi, supply water to public, industrial, and domestic wells in two counties in the northeastern part of the State. Paleozoic rocks in the area consist mostly of beds of sandstone, shale, and limestone which dip about 30 feet per mile to the southwest. The potentiometric surface of the Paleozoic aquifer slopes generally to the west away from the area of outcrop and is strongly affected by large groundwater withdrawals at Corinth. The water level at Corinth has declined about 160 feet from 1954 to 1974 and recovered about 45 feet by 1982. Wells that were near the center of the cone of depression have been replaced by new wells located away from the center.

Mississippi↗
USGS1983

Water-level maps of the alluvial aquifer, northwestern Mississippi, September 1982

Water levels were measured in about 500 wells in the Mississippi River valley alluvial aquifer in northwestern Mississippi during September 13-24, 1982. The water-level change from September 1981 to September 1982 showed some recovery, but the depth-to-water map showed areas of continual water-level decline in the central part of the Delta. Water levels in the Delta were higher along the Mississippi River and Bluff Hills and Yazoo River. Historically, water levels decline and rise as the amount of precipitation decreases or increases. Recently, continuous heavy pumping for irrigation has caused general water-level declines in the alluvial aquifer. (USGS)

Water-Resources Investigations Report↗
USGS1982

Hydrologic monitoring in the area of the proposed Yazoo River navigation project, west-central Mississippi, 1978-80

The ground—water level data presented in this report were collected in conjunction with a study of the Mississippi River Valley alluvial aquifer in part of the Yazoo River Basin. Funding for the collection of water—level data was provided by the Vicksburg District, Corps of Engineers, who also drilled the observation wells and surveyed elevations of the top of the casing of each well. The wells were drilled to obtain data on seasonal changes in ground—water levels, areas of recharge and/or discharge, and on direction of movement of water in the alluvial aquifer. This report is intended to document the data.

Mississippi↗
USGS1982

Water-level maps of the alluvial aquifer, northwestern Mississippi April 1982

Water levels were measured in about 500 wells in the Mississippi River valley alluvial aquifer in northwestern Mississippi during the period April 12-23, 1982. The water-level change from April 1981 to April 1982, showed a general decline, but the water-level change from September 1981 to April 1982 showed some recovery. Water levels in the Delta were higher along the Mississippi River and Bluff Hills. Historically, water levels decline and rise as the amount of precipitation decreases or increases. Recently, continuous heavy pumping for irrigation has caused general water-level declines in the alluvial aquifer.

Mississippi↗
USGS1981

Water-level map of the Mississippi delta alluvium in northwestern Mississippi, April 1981

The water-level map on the left was prepared by the U.S. Geological Survey in cooperation with the Mississippi Bureau of Land and Water Resources, Department of Natural Resources. The map represents the surface of the ground water as it was measured in 454 wells in the alluvial aquifer during April 13-24, 1981. The measurements were made near the beginning of the 1981 planting season after a year-long drought.

Mississippi↗