Fast-growing Hewitt means new subdivisions graded flat on Blackland clay — backyards that hold water and new slabs worth protecting. Here’s the fix.
Tell us what your yard is doing and we’ll come take a look — no charge.
Hewitt has grown fast on the south side of Waco, and much of that growth is newer subdivisions cut and graded onto Blackland clay — the setup that reliably produces flat backyards that hold water and slabs that need protecting.
When a development is graded onto expansive clay, the builder sets a rough grade for the pad and streets, but the individual backyard is often left nearly flat. On clay that barely absorbs water, a flat yard has no way to shed it: the surface saturates and the low corner stands wet for days. It isn’t a defect in your lot — it’s the predictable result of flat grading over Blackland clay, and it’s the most common Hewitt call we get.
In these yards the answer is typically a combination: regrading or a swale to build fall, a French drain to collect the trapped water, buried downspouts so the roof isn’t feeding the low spot, and a real outlet or a sump where the lot is too flat. We size it to the specific property rather than dropping in a one-size trench.
Whatever the yard is doing, we bring the full range to Hewitt:
In Hewitt’s newer, tightly-platted subdivisions, a fix that just pushes your water onto the next lot isn’t really a fix — it can run against both the neighborhood’s drainage plan and common sense. So part of designing a drain here is finding a legitimate outlet: a street or approved discharge, a swale that follows the platted flow, or a sump where the lot is landlocked. We’ll also tell you honestly how much of your standing water starts on your lot versus arrives from uphill, because on flat subdivision clay a good bit of it is passing through on its way somewhere.
A new foundation isn’t immune to the clay; the ground under a two-year-old slab swells and shrinks the same as under a fifty-year-old one. Getting the grade and downspouts right early — sloping about 0.5 inch per foot over the first 10 feet away from the house — is cheap insurance against the wet-dry swing. We cover Hewitt and the south-McLennan-County growth areas; call (254) 272-5068.
Free on-site drainage assessments across Waco and McLennan County. We’ll tell you what’s actually happening in your Blackland clay and what it takes to fix it.