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Chickasaw, Ohio
Inside Chickasaw's city limits, a shallow water table limits basements on 93% of mapped land, higher than 82% of Ohio cities. Shrink-swell clay limits houses without basements on 19%.
That water-table share is close to Mercer County's 95%. FEMA's flood data list no flood losses since 2016 in ZIP code 45826 overlapping the city. Of its 161 homes, 63% were built before 1980; the median dates from 1975.
Data as of October 13, 2026 · sources · in Mercer 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 Chickasaw
Basement waterproofing in Chickasaw: a shallow water table limits basements on 93% of Chickasaw's mapped land, more than in 82% of Ohio cities.
About 100 of Chickasaw's 161 homes are detached houses.
Soil under Chickasaw city limits
| Expansive clay (limits slab homes) | 19.1% |
| High water table (limits basements) | 93.3% |
| Septic fields very limited | 93.3% |
| Clay swell (LEP, by area) | 4.5% |
| High-swell land (LEP 6%+) | 0.9% |
| Mapped soil | 156 acres |
What the numbers mean here
Clay swell averages a linear extensibility of 4.5% by land area here, and 1% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 19% of the mapped land.
On 93% of Chickasaw's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 93% of the land very limited for septic absorption fields.
Drought in Mercer County
0% of Mercer 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 Chickasaw. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 45826 | 100% | 0 | $0 |
Homes in Chickasaw
| Housing units | 161 |
| Median year built | 1975 |
| Built before 1980 | 63% |
| Built 2000 or later | 12% |
| Owner-occupied | 89% |
| Median value, owner-occupied | $296,900 |
| Single-family detached | 91% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Montezuma | 5 mi | 24% | 92% |
| New Bremen | 6 mi | 27% | 99% |
| Osgood | 7 mi | 34% | 100% |
| Minster | 7 mi | 34% | over 99% |
| St. Henry | 7 mi | 25% | over 99% |
| Yorkshire | 8 mi | 32% | 100% |
| Coldwater | 8 mi | 29% | over 99% |
| North Star | 9 mi | 28% | 100% |
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