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A breakwater is a permanent structure constructed at a coastal area to protect against tides, currents, waves, and storm surges. Breakwaters have been built since antiquity to protect anchorages , helping isolate vessels from marine hazards such as wind-driven waves. [ 1 ]
There is a gap of 600 feet for the entrance, followed by the final section of breakwater which runs 1900 feet southward. [3] The inner basin is dredged to a depth of 23 feet. [6] The Harbor Beach Light is located on the breakwater at the mouth of the harbor. The breakwater is capped with concrete. [4]
A groyne gradually creates and maintains a wide area of beach on its updrift side by trapping the sediments suspended in the ocean current. This process is called accretion of sand and gravel or beach evolution. It reduces erosion on the other, i.e. downdrift, side by reducing the speed and power of the waves striking the shore.
Swimmers either from the beach or from boats off the beach are advised to consider the dangers. On the north side of Bar Head is Stage Island Pool, a fresh-water pond created on the vestiges of a 19th-century salt works. It is named after Stage Island, the esker that forms its northern border. The drying vats stood where the pool now stands ...
The approach channel to some ports situated on sandy coasts is guided and protected across the beach by parallel jetties. In some cases, these are made solid up to a little above low water of neap tides, on which open timber-work is erected, provided with a planked platform at the top raised above the highest tides. In other cases, they consist ...
The response of a sand beach was measured for various water levels and wave heights, both with and without an upper cobble berm. During the experiment, the dynamic revetment demonstrated dynamic stability, as the individual cobbles within the structure moved with every wave but the global shape of the revetment remained stable.
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The Harbor Beach Light is located at the end of the north breakwater entrance to the harbor of refuge, created by the U.S. Army Corps of Engineers, protecting the harbor of Harbor Beach, Michigan. Tours are available on Saturdays during the summer. The Harbor Beach Community House is located at the main intersection in Harbor Beach. On the west ...