Delaware: basement moisture and foundation risk by county
3 counties, ranked by our combined index. Highest combined risk is Sussex County (37), lowest is Kent County (33). The worst soil for foundation cracks specifically is in Sussex County.
| County | Index | Moisture | Cracks | Water table | Region |
|---|---|---|---|---|---|
| Sussex County | 37 | 43 | 23 | 46 | Atlantic coastal plain |
| New Castle County | 35 | 43 | 16 | 46 | Atlantic coastal plain |
| Kent County | 33 | 39 | 16 | 46 | Atlantic coastal plain |
Values from USDA NRCS SSURGO where available, otherwise our regional model — each county page states which. Methodology.
The physiographic regions inside Delaware
State lines are political; soil follows geology. These are the distinct ground types inside Delaware and why each behaves the way it does.
Atlantic coastal plain
Extremely variable over short distances: sand and saturated clay side by side. A county figure means less here than anywhere else we cover — the individual parcel decides.
3 counties: Kent County, New Castle County, Sussex County
Page data updated