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Brookville, Ohio
Inside Brookville's city limits, a shallow water table limits basements on 96% of mapped land, the 2nd-highest of 19 cities in Montgomery County. Shrink-swell clay limits houses without basements on 30%, the 2nd-highest of 19 cities in Montgomery County.
That water-table share is above Montgomery County's 65%. FEMA's flood data list 10 flood losses since 2016 in ZIP code 45309 overlapping the city. Of its 2,714 homes, 50% were built before 1980; the median dates from 1980.
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 Brookville
Basement waterproofing in Brookville: a shallow water table limits basements on 96% of Brookville's mapped land, more than in 86% of Ohio cities, and the ZIP code overlapping Brookville logged 10 FEMA flood losses since 2016.
In Montgomery County, 65% of the 48 flood-loss buildings with a recorded foundation type had basements.
About 1,900 of Brookville's 2,714 homes are detached houses.
Soil under Brookville city limits
| Expansive clay (limits slab homes) | 30.2% |
| High water table (limits basements) | 95.5% |
| Septic fields very limited | 96.2% |
| Clay swell (LEP, by area) | 4.6% |
| High-swell land (LEP 6%+) | 0.9% |
| Mapped soil | 2,715 acres |
What the numbers mean here
Clay swell averages a linear extensibility of 4.6% 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 30% of the mapped land.
On 96% of Brookville's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 96% 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 Brookville. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 45309 | 100% | 10 | $222,516 |
Homes in Brookville
| Housing units | 2,714 |
| Median year built | 1980 |
| Built before 1980 | 50% |
| Built 2000 or later | 26% |
| Owner-occupied | 62% |
| Median value, owner-occupied | $182,200 |
| Single-family detached | 71% |
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Phillipsburg | 5 mi | 28% | 100% |
| Clayton | 5 mi | 15% | 84% |
| Englewood | 6 mi | 24% | 66% |
| Trotwood | 6 mi | 22% | 65% |
| Verona | 6 mi | 28% | 97% |
| New Lebanon | 7 mi | 31% | 95% |
| Lewisburg | 7 mi | 5% | 59% |
| Union | 7 mi | 18% | 50% |
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