Brown County, Ohio · Georgetown
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With 26% of homes built before 1960 and about 28 hard-freeze nights a year, frozen and split pipes are a leading winter risk in the county.
Heavy rain days of an inch or more come about 9.2 times a year here, most often in February. A sump pump that hasn't run since last season is a common weak point.
Backups often follow heavy rain, which Brown County gets about 9.2 days a year, when storm water overloads sewer mains and pushes up through the lowest drain in the house.
In Brown County, 2.99 inches fell on the wettest day of the 2015–2024 record. Storms like that, and ice dams in snowy winters, cause most roof leaks.
19% of occupied homes in Brown County heat mainly with wood or propane, above the Ohio county median of 15.9%.
About 35 nights a year here stay at 65°F or warmer, so basements and crawl spaces can grow mold even without a leak.
Local risk profile
About 43,845 people live in Brown County, 490 square miles in southwest Ohio, in roughly 19,565 homes. Besides Georgetown, the county seat, the biggest communities are Mount Orab, Lake Lorelei and Ripley. Half the homes here were built before 1982, half after.
43/100 Water Damage Risk Index: Moderate Brown County ranks 61 of 88 Ohio counties. See the statewide ranking and method.The three factors where Brown County ranks highest compared with other Ohio counties.
Winters here are on the gentler end for Ohio, and pipes still freeze. From 2015–2024 it averaged 28 nights a year at 20°F or colder, the range where pipes in exterior walls, crawl spaces and unheated garages freeze, and 100 nights at or below 32°F. That ranks 63rd of 88 counties.
Cold snaps are the real risk. The worst in the record lasted 13 days below freezing (ending January 2018), and the low bottomed out near -11°F on February 20, 2015.
Expect the hardest freezes in January, inside a season that runs November to March. That's when an outdoor spigot left connected to a hose, or a pipe in a crawl space, is most likely to split.
Freezing nights typically start around Oct 27 and end around Apr 20.
Heavy rain is a bigger factor here than in most of Ohio. The county gets about 49.1 inches of rain and melted snow a year, with 9.2 days of an inch or more (2nd of 88). Those downpours cluster in February, March and June, when sump pumps and gutters are tested hardest. The wettest day on record brought 2.99 inches on September 9, 2018. The worst three-day stretch dropped 4.59 inches, ending September 10, 2018, the kind of soaking that overwhelms sump pumps and storm sewers.
About 85 days a year swing from below freezing at night to above freezing by day. Those freeze-thaw cycles feed ice dams on roofs, open cracks in foundations and driveways, and stress pipes that are already marginal.
Housing
Ohio's 88 counties range widely in housing age; Brown ranks 80th, with 48% of its homes built before 1980.
The mix runs from 26% built before 1960 to 18% built since 2000, so older neighborhoods bring aging pipe while newer subdivisions bring failed appliance lines and water heaters.
The 1980s and 1990s account for 35% of the county's homes. If yours is from those decades, look under the sinks and at the water heater for gray plastic pipe stamped PB, which is polybutylene and leak-prone.
Manufactured and mobile homes make up 15% of the housing here. Water lines in the underbelly depend on intact skirting and working heat tape, and they're usually the first to freeze in a cold snap.
With 12% of homes empty at survey time, landlords and seasonal owners should shut off the main or schedule checks in winter. An unheated vacant house is also where many policies limit freeze coverage.
Beyond water
About 35 nights a year in Brown County stay at 65°F or warmer, a sign of muggy summer air (42nd of 88 counties). July is the wettest month. Mold grows when indoor humidity stays above about 60%, the EPA's ceiling. A basement dehumidifier set to 50% and drying anything wet within 24 to 48 hours prevents most problems.
Mold remediation: what to expectMain heating fuel in Brown County's occupied homes: 18% utility gas, 57% electric, 13% propane and 6% wood. Wood heat is more common here than the state median. Have chimneys swept and fuel-burning appliances serviced each fall, and keep three feet clear around stoves and space heaters.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Brown County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Highland gets more pipe-freeze nights than Brown. Clinton County has the oldest housing nearby, with 53% of homes built before 1980.
By the numbers
| Factor | Brown | Ohio median | Rank |
|---|---|---|---|
| Homes built before 1960 | 26% | 37% | 77 of 88 |
| Homes built before 1980 | 48% | 61% | 80 of 88 |
| Homes built 2000 or later | 18% | 17% | 39 of 88 |
| Manufactured or mobile homes | 15% | 5.9% | 13 of 88 |
| Vacant homes | 12% | 8.4% | 19 of 88 |
| Wood or propane heat | 19% | 16% | 37 of 88 |
| Nights at 20°F or colder | 28/yr | 31/yr | 63 of 88 |
| Days with 1 inch+ of rain | 9.2/yr | 5.7/yr | 2 of 88 |
| Freeze-thaw days | 85/yr | 82/yr | 28 of 88 |
| Muggy nights (65°F+) | 35/yr | 35/yr | 42 of 88 |
Rank 1 is the highest value. Bars run from the lowest to the highest Ohio county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Brown County: freezing from November to March, heavy rain in February, March and June.
Sources: U.S. Census Bureau, ACS 2024 5-year estimates (2020-2024); weather from NOAA nClimGrid-Daily county averages (EpiNOAA), 2015–2024, averaged across the county; county boundaries from Census TIGER. Reviewed 2026-10-21. Methodology