A sediment budget study of clamshell dredging and ocean disposal activities in the New York bight |
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| Authors: | John F Tavolaro |
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| Institution: | (1) U S Army Corps of Engineers, New York District 26 Federal Plaza, 10278 New York, New York |
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| Abstract: | The purpose of this study was to quantify the dry mass of dredged material involved in each stage of typical clamshell dredging
and ocean disposal activities in order to identify and quantify “losses” of dredged material Turbidity plumes generated at
dredging sites were also observed Approximately 2% of the dredged material was lost at the dredging site Of this quantity
61% was due to the dredging itself and 38% was due to intentional barge overflow Approximately 3 7% of the dredged material
was lost at the Mud Dump Site during disposal Total loss of dredged material during these clamshell dredging and ocean disposal
operations was calculated to be 5 6% Observations revealed that turbidity plumes were local features which traveled along
the bottom for several hundred feet These plumes only persisted while dredging was occuring, and ambient conditions were established
within a relatively short time after dredging ceased |
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