Identify the water problem area and plan a downhill path to a suitable drainage point (street, dry well, or low area). Use stakes and string to mark the route. Ensure a minimum 1% slope (1 inch drop per 8 feet).
Call 811 to mark utilities before digging. Dig a trench 12-18 inches deep and 6-12 inches wide. Maintain consistent slope throughout. Remove any roots or debris from the trench.
Line the trench with landscape fabric, leaving enough excess on both sides to wrap over the top later. This prevents soil from clogging the drain over time.
Pour 2-3 inches of #57 stone (3/4" Limestone) into the bottom of the trench. This creates a solid drainage base beneath the pipe.
Lay 4-inch perforated drain pipe on top of the gravel with holes facing down. Connect sections securely. The pipe carries water away while gravel allows water to enter.
Cover the pipe with more #57 stone until 2-3 inches from the surface. Fold the landscape fabric over the top to completely enclose the gravel and pipe.
Cover with topsoil and sod, or finish with decorative gravel. Leave a small mound to account for settling. Test with a hose before finishing.
Use clean, washed #57 stone (3/4" Limestone) for best drainage. Avoid using crusite or limestone base—they compact and reduce water flow. For longer drains, add a cleanout access point every 50 feet.
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