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Subsoil Drainage Sydney
fix waterlogged yards

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If water pools during rain but clears within hours, that’s a stormwater problem. If the yard stays boggy for days after rain stops, that’s groundwater trapped in the soil. Subsoil drainage fixes the second problem.

Signs: yard stays wet for days after rain / spongy patches in lawn / water seeping through retaining wall / plants dying in specific areas regardless of what you plant.
Why it’s common in the Inner West: heavy clay soil in Dulwich Hill, Canterbury, Summer Hill and Stanmore holds water rather than draining it.
French Drains: gravel-filled trench with perforated pipe. Groundwater flows by gravity to a drainage outlet. No moving parts.
Ag Pipe Systems: flexible perforated pipe in a gravel bed. Standard fix for general subsoil drainage issues.
Soakwells: underground chamber that allows water to percolate slowly into surrounding soil.

Not sure which applies? See our stormwater drainage page.

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FREQUENTLY ASKED
QUESTIONS

What is a French drain?

A gravel-filled trench with a perforated pipe at its base. Groundwater migrates into the gravel and flows by gravity. No moving parts.

How do I fix a waterlogged backyard?

If the yard stays boggy for days after rain stops, it’s a subsoil drainage issue. A French drain or ag pipe system is the standard fix.