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Plymouth, Ohio
Inside Plymouth's city limits, a shallow water table limits basements on 71% of mapped land, the 5th-highest of 9 cities in Huron County. Shrink-swell clay limits houses without basements on under 1%.
That water-table share is below Huron County's 90%. FEMA's flood data list no flood losses since 2016 in ZIP code 44865 overlapping the city. Of its 849 homes, 81% were built before 1980; the median dates from 1953.
Data as of October 13, 2026 · sources · in Huron 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 Plymouth
Basement waterproofing in Plymouth: a shallow water table limits basements on 71% of Plymouth's mapped land, more than in 54% of Ohio cities.
About 600 of Plymouth's 849 homes are detached houses.
Soil under Plymouth city limits
| Expansive clay (limits slab homes) | 0.1% |
| High water table (limits basements) | 70.5% |
| Septic fields very limited | 94.3% |
| Clay swell (LEP, by area) | 3.1% |
| High-swell land (LEP 6%+) | 0.0% |
| Mapped soil | 1,621 acres |
| Soil series | Share here | Series nationally: high water table |
|---|---|---|
| Cardington | 33% | 99% |
| Bennington | 14% | 99% |
| Tuscola | 10% | n/a |
| Alexandria | 8% | n/a |
| Chili | 7% | 0% |
| Shoals | 5% | n/a |
What the numbers mean here
On 71% of Plymouth's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 94% of the land very limited for septic absorption fields.
Drought in Huron County
0% of Huron 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 Plymouth. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 44865 | 100% | 0 | $0 |
Homes in Plymouth
| Housing units | 849 |
| Median year built | 1953 |
| Built before 1980 | 81% |
| Built 2000 or later | 8% |
| Owner-occupied | 65% |
| Median value, owner-occupied | $116,300 |
| Single-family detached | 70% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Shiloh | 4 mi | 4% | 86% |
| Willard | 5 mi | under 1% | 99% |
| Shelby | 8 mi | 1% | 83% |
| North Fairfield | 8 mi | under 1% | 49% |
| Greenwich | 8 mi | under 1% | 96% |
| Tiro | 8 mi | under 1% | 90% |
| New Washington | 10 mi | under 1% | 90% |
| Attica | 12 mi | 15% | 98% |
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