A rock revetment in Charleston should get a yearly inspection and a check after every storm or unusually high tide, so rolled stones and exposed fabric get fixed before the bank behind them erodes.
866-398-9323Licensed seawall specialists — FL · GA · SC
Seawall Repairs by Solid Foundations provides revetment maintenance in Charleston, SC for homeowners, HOAs, condo communities, and marinas. Typical projects include resetting armor stone after king tides, rebuilding toes that have sunk into soft mud, and repairing torn filter fabric on harbor and river-front slopes. Call 866-398-9323 or use the quote form to book a free on-site inspection.
A revetment is a rock-armored slope: big stones on top of smaller stone and filter fabric, designed to soak up wave energy rather than reflect it. It's strong, but not maintenance-free. Wakes, storm tides, and currents shift stones a little every season, and the soft ground underneath can let the toe sink over time.
In South Carolina, revetments on tidal water are regulated alongside bulkheads by the SCDES Bureau of Coastal Management. SCDES says normal maintenance and repair may not need a critical area permit, while changing or expanding the structure can.
| Timing | Focus |
|---|---|
| Spring, before hurricane season | Full check; reset loose stone; fabric repairs |
| After a named storm | Displaced armor, toe damage, end washouts |
| After king tide events | Washouts along the top edge of the rock |
| Yearly, at a low tide | Toe settlement, slope shape, transitions |
The water is higher than it used to be. NOAA's Charleston Harbor gauge, with records back to 1901, shows relative sea level rising about 1.4 inches per decade. The city has seen more frequent king tides, and officials pointed to them, along with storm surge and heavier rain, when they rebuilt the Low Battery seawall (WCSC Live 5).
For a revetment, that means waves reach the upper slope more often. The upper stones are usually the smallest and easiest to move. A slope sized decades ago may now take regular hits on rock that was meant to stay dry most of the year. Add pluff mud at the toe, which lets the bottom row settle, and you get slopes that slowly steepen and slump. That's why we check both ends of the slope on every visit.
Routine revetment maintenance in Charleston typically runs $1,500–$5,000 per year for a standard 100-foot residential revetment. Major rehabilitation runs $150–$400 per linear foot. Keeping up with it costs far less than a rebuild.
Adding rock to the base of a vertical wall? See riprap installation in Charleston. For a full-property program, see shoreline maintenance in Charleston. Our Charleston seawall repair page covers wall problems behind the rock. Before storm season, read our hurricane prep guide. We also maintain revetments in Beaufort and Hilton Head.
At least once a year, ideally in spring, plus after any named storm or a run of very high tides.
Routine work that keeps the same footprint may qualify as normal maintenance and repair. Expanding or reshaping it usually needs a permit. We confirm before starting.
In soft pluff mud, the toe stones can slowly settle. A toe rebuild on a better base fixes it.
They can be. Higher water puts wave action on the upper slope, where the stones are smaller and easier to move.
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866-398-9323