Where a French drain helps
French drains are best suited to persistent wet bands, side-yard seepage, low planting beds and water that needs to be intercepted below grade. They are not a universal fix for blocked swales, roof runoff or a lot with no safe outlet.
- Soggy side yards between close homes
- Water migrating toward a slab or lanai
- Persistent wet soil after surface water recedes
- Low beds that need an underdrain