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Yard Drainage & Erosion Control in Tampa, FL

Quick answer

Yard drainage problems in Tampa Bay usually come from flat lots, a high water table in the rainy season, filled-in swales and roof water dumped at the house. Fixes include restoring swales, regrading, extending downspouts, French drains with a real outlet, dry creek beds and rain gardens. Wetland and shoreline work usually needs approval.

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Drainage problems in Tampa Bay look different from the clay-soil problems of other regions. The land is flat, many neighborhoods sit only a few feet above the bay or a nearby lake, the water table rises during the June to September rainy season, and afternoon thunderstorms can drop heavy rain in an hour. Sandy soil drains fast until it is saturated, then water has nowhere to go.

Signs you have a drainage problem

  • Standing water that lasts a day or more after a summer storm
  • Water collecting against the slab, pooling on the pool deck or entering the garage
  • Side-yard swales that hold water or were filled in by a previous owner
  • Sand and mulch washing onto walkways and driveways
  • Eroding banks along a lake, retention pond or canal
  • Downspouts dumping roof water right at the foundation

Common solutions

  • Restoring swales and grading: many subdivisions are designed so each lot drains to a swale and then to a stormwater pond or street. Reshaping a filled or flattened swale often fixes the problem.
  • Downspout extensions and buried lines: carrying roof water away from the house to a lawn area or swale.
  • French drains and catch basins: collecting water in low spots and piping it to an outlet. In high-water-table areas, a drain needs a real outlet lower than the problem area to work.
  • Dry creek beds: rock channels that move storm runoff and look intentional.
  • Rain gardens and Florida-friendly plantings: planted low areas that hold runoff and let it soak in, using plants that tolerate both wet summers and dry springs.

Erosion on lakes, ponds and shorelines

Lakefront lots in Lutz and Wesley Chapel, and pond-edge lots in newer Riverview and Brandon subdivisions, often see banks eroding from runoff and wave action. Fixes include planting the bank, redirecting the water that is cutting it, and erosion-control blankets. Stormwater ponds are often owned or maintained by an HOA or community development district, so ask before altering a bank. Work in wetlands, along natural shorelines or near mangroves usually needs approval: the Environmental Protection Commission of Hillsborough County regulates wetlands in Hillsborough, and the state protects mangroves. Check with your city or county first.

Depressions and sinkholes

West-central Florida sits on limestone, and sinkholes are a known risk. Many yard depressions are not true sinkholes and come from things like decaying buried debris, broken pipes or poorly compacted fill, but a licensed geologist or engineer has to determine the cause. If a depression appears suddenly or grows, keep people away, don't simply fill it, and get it evaluated. The Florida Geological Survey publishes a homeowner's guide to sinkholes.

Where the water goes matters

Sending concentrated water onto a neighbor's lot or blocking a drainage easement can cause disputes and code problems. A good plan sends water to the swale, street or pond system the lot was designed for, or to a planted area where it can soak in.

Before you hire

  • Take video during a heavy afternoon storm showing where water enters, flows and collects.
  • Pull your survey or plat to find drainage easements and swales.
  • Ask where the water will ultimately go and what happens in the peak of the rainy season.
  • Make sure Sunshine 811 is contacted before trenching.

If water is threatening your home, seawall or driveway, mark your request as urgent and request a drainage company.

See how it works

How a French drain carries water away from a yard. Press the buttons to run each step and see what happens inside. Made with Colorfigures ·
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Frequently asked questions

Why does my sandy yard flood if sand drains so well?

Sand drains quickly until the water table rises. During the summer rainy season, low lots can stay saturated, and if swales were filled or graded wrong, water has nowhere to go. Restoring the lot's designed drainage path is often the fix.

Is a depression in my yard a sinkhole?

It might be, but many depressions come from decaying debris, broken pipes or poorly compacted fill. Only a licensed geologist or engineer can determine the cause. Keep people away from a growing hole and have it evaluated rather than just filling it.

Can I fix erosion on the bank of my community pond?

Many stormwater ponds are owned or maintained by an HOA or community development district, so ask them first. Work in wetlands or along natural shorelines may also need approval from your county or, in Hillsborough, the Environmental Protection Commission.

Sources and further reading

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