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Edgewater, Maryland
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Shore Line Protection


Revetments are structures placed on banks or bluffs in such a way as to absorb the energy of incoming waves. They are usually built to preserve the existing uses of the shoreline and to protect the slope. Like seawalls, revetments armor and protect the land behind them.

Revetments may be either watertight, covering the slope completely, or porous, to allow water to filter through after the wave energy has been dissipated.

Breakwaters are fixed or floating structures that protect a shore area, harbor, anchorage, or basin by intercepting waves. Breakwaters are placed offshore to dissipate the energy of incoming waves. They can be placed one to three hundred feet offshore in relatively shallow water to protect a gently sloping beach.

Rip-Rap is a protective mound of stones, randomly placed to prevent erosion at a structure or embankment, - also the stone so used.

A riprap revetment consists of layered, various-sized rocks placed on a sloping bank, and are a very effective and popular method of controlling shore erosion.


Sill : Construction of a low retaining sill to trap sand results in what is known as a "perched beach," one that is elevated above its original level. Perched beaches have many of the same qualities as natural beaches, and the submerged sill does not intrude on the view of the waterfront. Perched beaches are appropriate erosion control measures where a beach is desired and sand loss is too rapid for convenient or economical replacement. They can also be used to create a new beach for recreation and shore protection.

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