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💧 DRAINAGE

Drainage & Yard Grading

Standing water, soggy patches, and water pooling near foundations are fixable without heavy equipment in most cases. These guides cover French drains, swales, and simple regrading for Virginia clay soil.

📋 2 Guides 🔧 Intermediate 💰 Save $1,500–$5,000 📍 Virginia clay soil focus
Drainage is the most underrated problem in residential yards. In Virginia, clay soil drains poorly — water sits on the surface or pools against foundations. Most drainage problems are fixable with a French drain, a properly placed swale, or simple regrading. Getting this right protects your foundation and makes every other yard project more successful.

Drainage Guides

2 guides available
⏱️ 18 min read 🔧 Intermediate

Retaining Wall with Drainage System

Retaining walls and drainage go hand in hand. This guide covers how to install the drainage system behind a wall — the part most guides skip.

Prevents costly failure
⏱️ 10 min read 🔧 Intermediate 🆕 Project Breakdown

French Drain for Standing Water

Recreated educational project: a simple French drain system to redirect water away from a low spot in a Virginia backyard. Covers grading, pipe sizing, and outlet placement.

~$400 in materials
💬 Field Note from Arturo M.

Before installing any French drain, spend 20 minutes with a level and a long board figuring out where the water actually wants to go. Most drainage problems are solved by finding the natural low point and giving water a clear path to it. If there's no natural outlet, you'll need a dry well or a pop-up emitter to the street — both covered in the project breakdown guides.

Drainage Questions

How do I know if I need a French drain or just regrading?
If water pools in the same spot after every rain and the ground around it slopes toward that spot, you need regrading first. If the ground slopes correctly but water still pools (common in clay soil), a French drain is the fix. If water is coming from a neighbor's yard or a slope above, you need a swale or berm to intercept it before it reaches your yard.
How deep should a French drain be?
For a typical yard drainage problem: 12–18 inches deep, with the pipe sitting in 6 inches of washed gravel. For drainage near a foundation: at least 24 inches deep, sloped away from the house at a minimum 1% grade (1 inch drop for every 8 feet of run).
What size pipe for a French drain?
4-inch perforated pipe handles most residential drainage situations. For larger areas or heavy runoff, use 6-inch. The pipe should be wrapped in filter fabric (sock) to prevent clay and silt from clogging the perforations over time.
Can I fix standing water without digging a French drain?
Sometimes. If the soil is just heavily compacted, deep aeration (hollow tine, not spike) can improve drainage. Adding compost to clay soil over multiple seasons improves drainage permanently. But for chronic standing water in a defined area, a French drain is usually the only reliable fix.

Fix Your Drainage Problem

Get the free Yard Planning Checklist — includes a drainage assessment checklist before you start digging.

Download Free Checklist →

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🗿 DIY Patios 🚶 Walkways 🧱 Retaining Walls 🌾 Lawn Care 💰 Budget Makeovers 🛠️ Tools & Materials 📍 Virginia Guides 📐 Project Breakdowns