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Soil series
These are the 20 soil series that cover the most land in the counties and cities on this site (160 in the full set). On 6 of them, USDA rates shrink-swell a limit for houses without basements on at least half their mapped land.
| Series | Mapped acres | Shrink-swell limits houses | Shallow water table limits basements | Median LEP |
|---|---|---|---|---|
| Pullman | 3,074,689 | 100% | 0% | 6.1% |
| Hoytville | 820,252 | 99% | 99% | 5.5% |
| Lake Charles | 657,410 | 97% | under 1% | 13.6% |
| Crockett | 1,324,041 | 94% | 0% | 9% |
| Houston Black | 1,414,933 | 91% | 0% | 12% |
| Wilson | 891,278 | 88% | 19% | 7.5% |
| Blount | 2,603,411 | 10% | over 99% | 4.5% |
| Eckrant | 1,906,622 | 8% | 0% | 4.5% |
| Eden | 1,550,879 | 6% | 0% | 4.5% |
| Gilpin | 5,850,620 | 0% | under 1% | 1.5% |
| Smithdale | 5,695,243 | 0% | 0% | 1% |
| Cecil | 5,685,216 | 0% | 0% | 1.5% |
| Amarillo | 3,045,572 | 0% | 0% | 3.1% |
| Shelocta | 2,330,133 | 0% | 4% | 1.5% |
| Crosby | 1,620,233 | 0% | 99% | 4.5% |
| Miamian | 797,970 | 0% | 78% | 4.5% |
| Bennington | 559,764 | 0% | 99% | 3.8% |
| Canfield | 539,963 | 0% | over 99% | 2.1% |
| Mahoning | 414,200 | 0% | 100% | 3.7% |
| Chili | 286,405 | 0% | 0% | 1.5% |
LEP: linear extensibility, the percent a soil's length changes between wet and dry. USDA classes 6% and up as high. How we count.