Distribution of bottom sediments and effect of proposed dredging in the ship channel of the Delaware River between Northeast Philadelphia, Pennsylvania and Wilmington, Delaware, 1984

Saved in:
Authors:Duran, Philip B.
Author Affiliations:Primary:
U. S. Geol. Surv., United States
Source:Hydrologic Investigations Atlas, No.HA-0697. Publisher: U. S. Geological Survey, Reston, VA, United States. ISSN: 0375-7978
Publication Date:1986
Note:In English. Hydrol. map 1:48,000
Summary:Based on the marine geophysical techniques of seismic reflection and electromagnetic conductivity, as well as on river boring data, this map shows the sedimentary distribution below the Delaware River ship channel. Approximately forty miles of channel are mapped between northeastern Philadelphia, Pennsylvania, and the Delaware Memorial Bridge (near Wilmington, Delaware). Much of the channel bottom is underlain by sand, but large areas of extensive silt and clay deposits or elevated bedrock were also found. The presence of a potentially confining clay in the area around Camden, New Jersey, where ground water is heavily pumped, suggests that further channel deepening there could increase recharge from the river to the aquifer. Available water-quality information indicates that this would result in some deterioration of the aquifer's water quality.
Subjects:Alluvium aquifers; Aquifers; Channels; Cores; Dredging; Electromagnetic methods; Engineering geology; Geophysical methods; Geophysical surveys; Ground water; Hydrogeology; Hydrologic maps; Hydrology; Impact statements; Maps; Recharge; Seismic methods; Stream sediments; Surveys; USGS; Water quality; Waterways; Atlantic Coastal Plain; Burlington County New Jersey; Camden County New Jersey; Central Atlantic Coastal Plain; Delaware; Delaware County Pennsylvania; Delaware River; Gloucester County New Jersey; New Castle County Delaware; New Jersey; Pennsylvania; Philadelphia County Pennsylvania; Salem County New Jersey; United States; Southeastern Pennsylvania; Hydrologic map
Coordinates:N394130 N400230 W0745730 W0753113
Record ID:1986059524
Copyright Information:GeoRef, Copyright 2018 American Geosciences Institute.
Tags: Add Tag
No Tags, Be the first to tag this record!