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North Star, Ohio
Inside North Star's city limits, a shallow water table limits basements on 100% of mapped land, the 5th-highest of 18 cities in Darke County. Shrink-swell clay limits houses without basements on 28%, the 5th-highest of 18 cities in Darke County.
That water-table share is close to Darke County's 96%. FEMA's flood data list no flood losses since 2016 in the 2 ZIP codes overlapping the city.
Data as of October 13, 2026 · sources · in Darke County
expansive clay: shrink-swell limits slab homes
high water table: limits basements
flood losses since 2016 in 2 overlapping ZIPs
Basement waterproofing in North Star
Basement waterproofing in North Star: a shallow water table limits basements on 100% of North Star's mapped land, more than in 98% of Ohio cities.
Soil under North Star city limits
| Expansive clay (limits slab homes) | 27.8% |
| High water table (limits basements) | 100.0% |
| Septic fields very limited | 100.0% |
| Clay swell (LEP, by area) | 4.8% |
| High-swell land (LEP 6%+) | 1.4% |
| Mapped soil | 328 acres |
What the numbers mean here
Clay swell averages a linear extensibility of 4.8% 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 28% of the mapped land.
On 100% of North Star's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
USDA rates 100% of the land very limited for septic absorption fields.
Drought in Darke County
0% of Darke 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 North Star. ZIP areas reach past city limits.
| ZIP | Share of city land | Flood losses | Paid |
|---|---|---|---|
| 45362 | 62% | 0 | $0 |
| 45350 | 38% | 0 | $0 |
Homes
North Star has fewer than 100 housing units in the ACS 2020-2024 estimates, too few for reliable shares.
Nearby cities
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Yorkshire | 4 mi | 32% | 100% |
| Osgood | 4 mi | 34% | 100% |
| New Weston | 4 mi | 15% | 100% |
| Burkettsville | 4 mi | 47% | over 99% |
| Rossburg | 5 mi | 21% | over 99% |
| St. Henry | 7 mi | 25% | over 99% |
| Versailles | 8 mi | 18% | 89% |
| Ansonia | 8 mi | 25% | 93% |
Sources: USDA SSURGO (August 5, 2026) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026). Methods · Data status