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New Carlisle, Ohio
Inside New Carlisle's city limits, a shallow water table limits basements on 32% of mapped land. Shrink-swell clay limits houses without basements on 44%, the highest of 9 cities in Clark County.
That water-table share is below Clark County's 59%. FEMA's flood data list 9 flood losses since 2016 in ZIP code 45344 overlapping the city. Of its 2,168 homes, 89% were built before 1980; the median dates from 1966.
Data as of October 13, 2026 · sources · in Clark County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 1 overlapping ZIP
of homes built before 1980
Basement waterproofing in New Carlisle
Basement waterproofing in New Carlisle: a shallow water table limits basements on 32% of New Carlisle's mapped land, and the ZIP code overlapping New Carlisle logged 9 FEMA flood losses since 2016.
In Clark County, 13% of the 23 flood-loss buildings with a recorded foundation type had basements.
About 1,700 of New Carlisle's 2,168 homes are detached houses.
Soil under New Carlisle city limits
| Expansive clay (limits slab homes) | 43.7% |
| High water table (limits basements) | 31.5% |
| Septic fields very limited | 95.9% |
| Clay swell (LEP, by area) | 4.7% |
| High-swell land (LEP 6%+) | 0.3% |
| Mapped soil | 1,735 acres |
What the numbers mean here
Clay swell averages a linear extensibility of 4.7% by land area here, and under 1% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 44% of the mapped land.
On 32% of New Carlisle's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 96% of the land very limited for septic absorption fields.
Drought in Clark County
0% of Clark County is in drought (D1 or worse) on the October 13, 2026 map. County detail.
Flood losses by ZIP code
FEMA flood records since 2016 in the ZIP codes that overlap New Carlisle. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 45344 | 100% | 9 | $159,758 |
Homes in New Carlisle
| Housing units | 2,168 |
| Median year built | 1966 |
| Built before 1980 | 89% |
| Built 2000 or later | 9% |
| Owner-occupied | 67% |
| Median value, owner-occupied | $131,800 |
| Single-family detached | 81% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Donnelsville | 5 mi | 3% | 74% |
| North Hampton | 5 mi | 11% | 77% |
| Enon | 7 mi | 8% | 39% |
| Huber Heights | 7 mi | 14% | 67% |
| Christiansburg | 8 mi | 24% | over 99% |
| Tipp City | 9 mi | 18% | 56% |
| Casstown | 9 mi | 0% | 37% |
| Vandalia | 10 mi | 11% | 73% |
Sources: USDA SSURGO (August 5, 2026) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · Census ACS 2020-2024. Methods · Data status