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Miamisburg, Ohio
Inside Miamisburg's city limits, a shallow water table limits basements on 57% of mapped land. Shrink-swell clay limits houses without basements on 12%.
That water-table share is below Montgomery County's 65%. FEMA's flood data list 4 flood losses since 2016 in ZIP code 45342 overlapping the city. Of its 7,937 homes, 56% were built before 1980; the median dates from 1976.
Data as of October 13, 2026 · sources · in Montgomery 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 Miamisburg
Basement waterproofing in Miamisburg: a shallow water table limits basements on 57% of Miamisburg's mapped land, and the ZIP code overlapping Miamisburg logged 4 FEMA flood losses since 2016.
In Montgomery County, 65% of the 48 flood-loss buildings with a recorded foundation type had basements.
About 6,200 of Miamisburg's 7,937 homes are detached houses.
Soil under Miamisburg city limits
| Expansive clay (limits slab homes) | 11.5% |
| High water table (limits basements) | 56.7% |
| Septic fields very limited | 87.1% |
| Clay swell (LEP, by area) | 4.5% |
| High-swell land (LEP 6%+) | 11.4% |
| Urban land, not rated | 8.5% |
| Mapped soil | 7,962 acres |
What the numbers mean here
On 57% of Miamisburg's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 87% of the land very limited for septic absorption fields.
Drought in Montgomery County
0% of Montgomery 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 Miamisburg. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 45342 | 97% | 4 | $18,701 |
Homes in Miamisburg
| Housing units | 7,937 |
| Median year built | 1976 |
| Built before 1980 | 56% |
| Built 2000 or later | 20% |
| Owner-occupied | 73% |
| Median value, owner-occupied | $231,300 |
| Single-family detached | 78% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| West Carrollton | 3 mi | 3% | 22% |
| Carlisle | 4 mi | under 1% | 13% |
| Moraine | 5 mi | 3% | 33% |
| Germantown | 5 mi | 5% | 59% |
| Springboro | 5 mi | 8% | 28% |
| Franklin | 5 mi | 2% | 27% |
| Centerville | 7 mi | 17% | 54% |
| Kettering | 8 mi | 6% | 28% |
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