Beach Restoration on Sandy Hook, Gateway National Recreation Area, from Maintenance Dredging of Ambrose and Sandy Hook Federal Navigation Channels.
ARMY ENGINEER DISTRICT NEW YORK
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Ambrose Channel and Sandy Hook Channel are the main entrance channels into the Port of New York. Approximately 200 million tons of commerce pass through the Port of New York every year. Ambrose Channel is 2,000 ft wide and is maintained to a depth of 45 ft at mean low water from deep water in the Atlantic Ocean to deep water just south of the Narrows Figure 1. Historically, the controlling dept in Ambrose Channel was 18 ft, but through the years, it has been deepened to its present depth of 45 ft. Sandy Hook Channel is maintained to a width of 800,000 cu yd are removed every 2 years from Ambrose Channel, while about 500,000 cu yd are removed from Sandy Hook Channel every 2 year. The materials dredged from Ambrose Channel are largely fine to medium sands which originate from the longshore littoral drift along the south shore littoral drift along the south mental Protection Agency designated disposal site for dredged material, known as the Mud Dump, which is located several miles to the south of the channel entrance.
- Civil Engineering