HomeOhioAshland CountySavannah
Savannah, Ohio
Inside Savannah's city limits, a shallow water table limits basements on 68% of mapped land, the 5th-highest of 9 cities in Ashland County. Shrink-swell clay limits houses without basements on under 1%.
That water-table share is close to Ashland County's 63%. FEMA's flood data list 4 flood losses since 2016 in the 2 ZIP codes overlapping the city. Of its 140 homes, 63% were built before 1980; the median dates from 1939 or earlier.
Data as of October 13, 2026 · sources · in Ashland 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 Savannah
Basement waterproofing in Savannah: a shallow water table limits basements on 68% of Savannah's mapped land, more than in 53% of Ohio cities, and the 2 ZIP codes overlapping Savannah logged 4 FEMA flood losses since 2016.
About 100 of Savannah's 140 homes are detached houses.
Soil under Savannah city limits
| Expansive clay (limits slab homes) | 0.1% |
| High water table (limits basements) | 67.5% |
| Septic fields very limited | 99.2% |
| Clay swell (LEP, by area) | 2.8% |
| High-swell land (LEP 6%+) | 0.0% |
| Mapped soil | 363 acres |
| Soil series | Share here | Series nationally: high water table |
|---|---|---|
| Centerburg | 29% | over 99% |
| Chili | 21% | 0% |
| Bennington | 13% | 99% |
| Conotton | 6% | n/a |
| Lobdell | 6% | n/a |
| Shoals | 5% | n/a |
What the numbers mean here
On 68% of Savannah's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 99% of the land very limited for septic absorption fields.
Drought in Ashland County
0% of Ashland 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 Savannah. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 44874 | 76% | 0 | $0 |
| 44805 | 24% | 4 | $33,087 |
Homes in Savannah
| Housing units | 140 |
| Median year built | 1939 or earlier |
| Built before 1980 | 63% |
| Built 2000 or later | 18% |
| Owner-occupied | 77% |
| Median value, owner-occupied | $165,300 |
| Single-family detached | 82% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Bailey Lakes | 2 mi | 9% | 71% |
| Ashland | 8 mi | 1% | 81% |
| New London | 8 mi | under 1% | 77% |
| Polk | 8 mi | under 1% | 97% |
| Greenwich | 9 mi | under 1% | 96% |
| Rochester | 11 mi | 1% | 97% |
| Shiloh | 12 mi | 4% | 86% |
| Mifflin | 14 mi | 5% | 27% |
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