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Tontogany, Ohio
Inside Tontogany's city limits, a shallow water table limits basements on 98% of mapped land, the 4th-highest of 25 cities in Wood County. Shrink-swell clay limits houses without basements on 70%.
That water-table share is above Wood County's 91%. FEMA's flood data list no flood losses since 2016 in the 2 ZIP codes overlapping the city. Of its 157 homes, 70% were built before 1980; the median dates from 1963.
Data as of October 13, 2026 · sources · in Wood County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 2 overlapping ZIPs
of homes built before 1980
Basement waterproofing in Tontogany
Basement waterproofing in Tontogany: a shallow water table limits basements on 98% of Tontogany's mapped land, more than in 91% of Ohio cities.
About 100 of Tontogany's 157 homes are detached houses.
Soil under Tontogany city limits
| Expansive clay (limits slab homes) | 70.4% |
| High water table (limits basements) | 98.1% |
| Septic fields very limited | 98.1% |
| Clay swell (LEP, by area) | 4.9% |
| High-swell land (LEP 6%+) | 0.0% |
| Mapped soil | 194 acres |
| Soil series | Share here | Series nationally: high water table |
|---|---|---|
| Hoytville | 71% | 99% |
| Nappanee | 16% | n/a |
| Aurand | 5% | n/a |
| Mermill | 2% | n/a |
| Houcktown | 2% | n/a |
| Shoals | 1% | n/a |
What the numbers mean here
Clay swell averages a linear extensibility of 4.9% by land area here, and 0% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 70% of the mapped land.
On 98% of Tontogany's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 98% of the land very limited for septic absorption fields.
Drought in Wood County
0% of Wood 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 Tontogany. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 43565 | 54% | 0 | $0 |
| 43402 | 46% | 0 | $0 |
Homes in Tontogany
| Housing units | 157 |
| Median year built | 1963 |
| Built before 1980 | 70% |
| Built 2000 or later | 19% |
| Owner-occupied | 78% |
| Median value, owner-occupied | $163,700 |
| Single-family detached | 80% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Haskins | 4 mi | 85% | over 99% |
| Waterville | 6 mi | 27% | 71% |
| Bowling Green | 6 mi | 39% | 76% |
| Weston | 6 mi | 36% | 92% |
| Grand Rapids | 7 mi | 36% | 84% |
| Whitehouse | 8 mi | 28% | 77% |
| Portage | 8 mi | 41% | 73% |
| Milton Center | 10 mi | 85% | 99% |
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