The short answer
How Grading Helps
Grading changes the surface slope of your yard so that rainwater flows away from your home's foundation instead of pooling against it. When the ground slopes downward from the house, water moves downhill and away, reducing the pressure that pushes moisture through basement walls or crawl space vents. This is often the first step in managing surface water problems.
For grading to work, the slope needs to be consistent and maintained. Over time, soil settles, and the slope can flatten. You may need to add fill dirt and compact it to keep the grade effective. Check the slope after heavy rain to see if water still ponds near the foundation.
- Slope should drop at least 6 inches over 10 feet from the house
- Use clean fill dirt that compacts well, not topsoil with organic matter
- Create a swale or shallow ditch to channel water away
- Extend downspouts so they discharge several feet from the foundation
- Avoid creating low spots where water can collect
Limits of Yard Grading
Grading only affects surface water. If water enters through cracks in the foundation, through a high water table, or from a plumbing leak, changing the yard slope won't stop that. You may still see moisture in a basement or crawl space even with perfect grading.
Also, grading can't fix problems caused by a neighbor's yard that slopes toward your property or by underground springs. In such cases, you might need additional measures like a French drain, sump pump, or interior waterproofing. A water damage inspection can help you understand what's actually happening.
Before You Start Digging
Before you regrade, locate underground utilities and your septic system if you have one. Digging into a gas line or sewer pipe creates a bigger problem than water. Also, check your local building codes, as some areas require permits for changing drainage patterns.
If the project is large, or if you're unsure about the soil type and slope, consider hiring a professional who has experience with drainage. They can help you design a grade that actually moves water away without causing problems for your neighbor's property.
Signs You Need More than Grading
If you've already graded your yard and water still seeps in, look for other clues. Cracks in the foundation, efflorescence (white chalky residue) on basement walls, or musty odors in a crawl space all point to issues beyond surface runoff. These signs mean water is coming through the structure itself.
You might also have a clogged gutter or downspout that dumps water right next to the foundation. Clean your gutters and extend downspouts first, because that is a simple and low-cost step. If the problem persists, a professional can inspect the foundation and recommend a solution.
Working with Water Damage Pros
Local water damage pros can help you assess the situation before you spend time and money on grading. They can check for hidden water entry points, measure moisture levels, and advise on whether grading will solve the problem or if you need additional drainage work.
Keep your shutoff valve location written down in case a pipe break is the real culprit. If you discover active water intrusion, emergency water extraction may be needed first to dry out the area before any grading or repair work happens. That protects your home from further damage.
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Call Now (801) 383-0232Frequently asked questions
How much slope do I need to keep water away?
A slope of at least 6 inches over 10 feet is the standard guideline for directing surface water away from a foundation. That's about a 5% grade. You can measure with a string level and a tape measure. If the slope is less, water may still pool.
Can I grade my yard myself or should I hire a pro?
Small regrading jobs can be done yourself with a shovel and a rake, especially if you're just adding fill dirt. But if the area is large, or if you have hard clay soil, heavy equipment might be needed. A pro can also spot drainage issues you might miss.
What if water still comes in after I grade the yard?
If water still enters, the problem is likely not surface runoff. Check for foundation cracks, high groundwater, or a leaking pipe. You might need a French drain or interior waterproofing. A water damage inspection can identify the true source before you invest more.