Records of wells, exploratory boreholes, and ground-water quality, Atlantic County and vicinity, New Jersey

Abstract

This report presents selected data on wells, exploratory boreholes, and ground-water quality in Atlantic County and parts of eastern Ocean and Cape May Counties, New Jersey. It is one of a series of reports based on the results of a study of ground-water supplies in Atlantic City and vicinity, funded by the New Jersey Water-Supply Bond of 1981. Construction details are presented for 807 wells and exploratory boreholes, and results of more than 3,500 chemical analyses of water samples collected from 313 wells from 1924-88 are given. During the current study, water samples from -166 wells were analyzed for common ions, phenols, selected trace elements, nutrients, and volatile organic compounds; water from six of these wells also was analyzed for pesticides. An index of geophysical logs, including caliper, gamma-gamma, fluid-conductivity, gamma-ray, 6-foot-lateral-resistivity, neutron, single-point-resistance, sonic, short-and long-normal-resistivity, spontaneous-potential, and fluid-temperature, made in 75 wells and exploratory boreholes also is included.Atlantic City and vicinity conducted during 1983-88 and funded by the New Jersey Water-Supply Bond of 1981. (Hereafter, this investigation is called the recent Atlantic City study.) Additional information on the objectives, approach, and planned products of this investigation is given in Leahy and others (1987). Description of Study AreaAtlantic County, an area of about 565 mi 2 (square miles), is in the southeastern part of New Jersey (fig. 1). Atlantic County and vicinity, as used in this report, occupies about 1,200 mi 2 and includes all of Atlantic County and parts of adjoining Ocean, Burlington, Cumberland, and Cape May Counties (fig. 1). The study area is bounded on the east by the Atlantic Ocean.According to the Federal Census of 1980 (U.S. Department of Commerce, 1982), the resident population of Atlantic County was 194,119, or about 350 persons per mi 2 . Most of the population is concentrated in the eastern part of the county. Atlantic City, with 40,199 inhabitants, has the largest population of any urban area in the county. The population of Atlantic County is projected to reach 252,800 by the year 2000 (New Jersey Office of Demographic and Economic Analysis, 1983, p. 15). The population of the study area increases greatly during the summer because of the influx of tourists to the coastal resorts.In 1981, wooded acreage accounted for about 61 percent of the total area of Atlantic County; wetlands, 14 percent; residential areas, 10 percent; and farmland, 9 percent. In order of decreasing percentage of the remaining 6 percent, the rest of the area was used for commercial, recreational, public, and industrial purposes (J. Brennan, Atlantic County Department of Regional Planning and Development, oral commun., 1986). About 70 percent of Atlantic County lies within the New Jersey Pinelands protected area (A. D'Arcy, New Jersey Pinelands Commission, oral commun., 1986) . Previous InvestigationsThis report presents hydrologic data collected as part of several...

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“…However, no information is available on potential correction models used in the calculation of radiocarbon ages. The available hydrochemical analyses of the radiocarbon dated wells from McAuley et al (2001) and Barton et al (1993) show much higher HCO 3 contents in samples of older radiocarbon ages than in those with younger ages. This suggests that the original percent modern carbon (pMC) may have changed after water infi ltration.…”

Fresh-water and salt-water distribution in passive margin sediments: Insights from Integrated Ocean Drilling Program Expedition 313 on the New Jersey Margin

“…Beneath the New Jersey coastal plain, a multilayered system saturated with fresh water is developed in unconsolidated siliciclastic deposits of Miocene age (Barlow, 2003;Barton et al, 1993;Miller and Snyder, 1998;Szabo et al, 2006). Due to onshore pumping and salt-water intrusion, the upper unconfi ned aquifer (surficial Kirkwood-Cohansey) commonly contains brackish or salty water at the coastline.…”

“…5B). R1 probably forms the seaward extension of the onshore aquifers such as the Kirkwood-Cohansey aquifer system and the Atlantic City 800-foot sand, forming a major aquifer along the coast (Barton et al, 1993). In contrast to the reservoirs located farther offshore, the permeable layers there have not been salinized, and the connection with the other reservoirs remains an open question.…”

Seismic Reflection Methods in Offshore Groundwater Research

“…The upper part consists of a siliciclastic prograding shelf and slope system built since the Oligocene. Beneath the coastal plain, a multilayered aquifer system saturated with low-salinity pore water is prevalently hosted in unconsolidated siliciclastic deposits of Miocene age [6,[101][102][103] (Figure 6B). The upper unconfined aquifer locally contains brackish or salty water at the coastline and this saline contamination is due to onshore pumping and salt-water intrusion.…”