After the King Tides: A Seawall and Dock Inspection Checklist for South Florida Owners

The days after elevated winter tides are the right time to inspect a seawall and dock. Here is what to look for at the wall, the dock, and the waterline, and when a finding needs an engineer.

Why the days after high water are the inspection window

Elevated tides put a seawall and dock under stresses they do not see on an average day: water pressed against the full height of the wall, floating debris working at pilings and fasteners, and standing water where drainage is blocked. The days after a high-water window are when the results show up.

The inspection is easiest at low tide, after the water falls. That is when the wall toe, the piling bases, and the lift frame are exposed and the parts salt water covers most of the day are there to look at.

The seawall, top to bottom

Walk the full length of the wall and look at the cap first: new cracks, spalled corners, or a cap that has shifted are among the earliest visible signs of movement. Then check the face for cracks that have grown, weeping joints, a white mineral stain called efflorescence, and any exposed or rust-stained rebar.

Check the toe of the wall at low tide for scour, undercutting, or sediment washed away, and look along the top for any lean or tilt relative to the dock line. A wall that has moved, even a little, deserves an engineer's eyes before the next storm season.

The dock and the lift

Inspect the decking and framing for lifted boards, loose fasteners, and soft spots, and probe the pilings at the waterline for decay below a sound surface. Look at chafe zones on dock lines and fenders, and confirm the cleats and bumpers are still firmly anchored.

On a boat lift, check the cables and pulleys, confirm the sacrificial anodes on the submerged frame are present and not worn through, and listen for any change in the winch as it raises. Small findings here are inexpensive to fix early.

Water and drainage behind the wall

Elevated tides and rain combine to test the land side of a wall. Look for pooling or soft ground behind the wall, downspouts and drains that empty against it, and weep holes that are blocked. Water trapped behind a wall is one of the more common causes of wall movement.

If you see signs that water collects behind the wall, treat it as a maintenance item before it becomes a structural one. Routing drainage away from the wall is usually far less expensive than repairing a wall that shifted.

Document it and act

Take dated photos of everything you find, even the minor items, and keep the notes with your property records. A dated record is useful at resale, when a buyer's inspection will ask the same questions about the wall, the dock, and the depth.

Separate the findings into two lists: items you can address yourself, such as clearing weep holes, tightening hardware, and resealing small cracks, and items that need a professional, such as a leaning wall, deep spalling, or a rotted piling. Acting on the first list now, and getting the second assessed early, is how owners protect access and value.

Pair the structure inspection with a depth check at mean low tide so your waterway record covers the water and the structures in the same season.

Getting your waterway assessed

A qualified crew can walk your dock and seawall and measure the water depth in a free site consultation, and tell you which findings are immediate and which can be planned.

To request free resources about dredging, call (561) 299-1323 or email slselleck@gmail.com. Tell us about your dock, slip, or waterway and we will help you understand what it needs.

This content was created with AI assistance and reviewed for fair housing compliance.

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