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A. J. Velnich

Publications and source records attributed to A. J. Velnich.

5 recordsLinked to original sources
USGS1993

Corrosiveness of ground water in the Kirkwood-Cohansey aquifer system of the New Jersey Coastal Plain

Ground water from the unconfined part of the Kirkwood-Cohansey aquifer system in the New Jersey Coastal Plain typically is corrosive-- that is, it is acidic, soft, and has low concentrations of alkalinity. Corrosive ground water has the potential to leach trace elements and asbestos fibers from plumbing materials used in potable- water systems, thereby causing potentially harmful concentrations of these substances in drinking water. Corrosion indices were calculated from water-quality data for 370 wells in the unconfined Kirkwood-Cohansey aquifer system. Values of the Langelier Saturation Index are predominantly negative, indicating that the water is undersaturated with respect to calcium carbonate, and, therefore, is potentially corrosive. Values of the Aggressive Index, a similar estimator of the corrosiveness of water, range from 3.9 (highly corrosive) to 11.9 (moderately corrosive). The median Aggressive Index value calculated for the 370 wells is 6.0, a value that indicates that the water is highly corrosive. Moderately corrosive ground water is found in some coastal areas. Isolated instances of moderately corrosive water are found in northern Ocean County, and in Burlington, Camden, and Salem Counties. In the vicinity of Ocean County corrosion-index values change little with depth, but in Atlantic, Burlington, and Salem Counties the corrosiveness of ground water generally appears to decrease with depth. Analyses of standing tap water from newly constructed homes in the Coastal Plain show concentrations of lead and other trace elements are significantly higher than those in ambient ground water. The elevated trace-element concentrations are attributed to the corrosion of plumbing materials by ground water. Results of the tap-water analyses substantiate the corrosiveness of Kirkwood-Cohansey ground water, as estimated by corrosion-index values.

New Jersey↗
USGS1984

Drainage areas in New Jersey; Atlantic coastal basins, South Amboy to Cape May

Drainage areas of New Jersey streams in the coastal basin from South Amboy to Cape May are listed for more than 700 sites. Tables list the descriptive location of each site, the latitude and longitude, county, and National Topographic map name. For gaged sites established through 1982, the U.S. Geological Survey station name and site number are also shown. The data are presented alphabetically by stream name and in downstream order. Drainage areas were tabulated for named streams and unnamed streams with a drainage area greater than 5 square miles. The methods used to delineate the drainage divides, measure areas, and determine mouths of streams follow the guidelines developed by the U.S. Water Resources Council. (USGS)

Open-File Report↗
USGS1982

Flood data in West Windsor Township, Mercer County, New Jersey, through 1981 water year

Flood stages and peak discharges are described for 13 sites on streams in West Windsor Township, Mercer County, New Jersey, and surrounding areas, collected by the U.S. Geological Survey through the 1981 water year. Included are descriptions and elevations of floodmarks at 30 sites located by the West Windsor Township Environmental Commission after the September 25-27, 1975 flood. (USGS)

Open-File Report↗