Columbia County, Arkansas · Magnolia
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Columbia County averages 3 nights a year at 20°F or colder, mostly January, and 23% of its homes predate 1960.
April brings the most downpours to Columbia County, part of 17.9 heavy-rain days a year. Check the sump first.
Backups often follow heavy rain, which Columbia County gets about 17.9 days a year, when storm water overloads sewer mains and pushes up through the lowest drain in the house.
In Columbia County, 4.93 inches fell on the wettest day of the 2015–2024 record. Storms like that, and ice dams in snowy winters, cause most roof leaks.
6% of occupied homes in Columbia County heat mainly with wood or propane, below the Arkansas county median of 10.9%.
About 116 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
With 11,030 homes and around 22,349 residents, Columbia County is 766 square miles of southwest Arkansas. Besides Magnolia, the county seat, the biggest communities are Waldo, Taylor and McNeil. Half the homes here were built before 1981, half after.
59/100 Water Damage Risk Index: Elevated Columbia County ranks 15 of 75 Arkansas counties. See the statewide ranking and method.The three factors where Columbia County ranks highest compared with other Arkansas counties.
Winters here are on the gentler end for Arkansas, and pipes still freeze. In the 2015–2024 record the county logged about 3 nights a year at or below 20°F (68th of 75) and 42 below freezing. Twenty degrees is roughly where uninsulated pipes start to freeze.
The longest cold spell was straight 4 days without the temperature rising above freezing, ending in February 2021. The coldest night reached about 0°F on February 16, 2021. Burst pipes usually show up when a spell like that breaks and the ice thaws.
Most freezing nights fall from January, peaking in January. Disconnect garden hoses and shut off outdoor spigots before the first hard frost, and keep the heat at 55°F or higher if you'll be away.
Freezing nights typically start around Nov 13 and end around Mar 18.
Heavy rain is a bigger factor here than in most of Arkansas. Of roughly 59 inches of yearly precipitation, the damage comes from the 17.9 days a year with an inch or more, ranked 22nd of 75. January, March and April see the most. The single wettest day in the record: 4.93 inches, March 9, 2016. The worst three-day stretch dropped 9.38 inches, ending March 11, 2016, the kind of soaking that overwhelms sump pumps and storm sewers.
The temperature crosses 32°F in both directions on roughly 40 days a year. Each cycle melts and refreezes water at roof edges and in foundation cracks, which is how ice dams and basement seepage get started.
Housing
49% of homes in Columbia County predate 1980, close to the Arkansas county median of 46%, which ranks 31st of Arkansas's 75 counties.
In Columbia County 23% of homes are older than 1960. If yours is one of them and the plumbing has never been replaced, expect galvanized steel supply pipe and cast iron drain lines, the two materials most likely to fail quietly.
The 1980s and 1990s account for 30% 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.
17% of homes are manufactured or mobile homes, close to the Arkansas county median of 15%. Their water lines run under the floor behind the skirting, so a torn skirt or failed heat tape freezes them faster than lines in a site-built house.
The Census counted 24% of homes as vacant, above the Arkansas county median of 18.1%. Empty houses are where a small leak turns into a large claim, because nobody is there to hear it.
Beyond water
About 116 nights a year in Columbia County stay at 65°F or warmer, a sign of muggy summer air (16th of 75 counties). April is the wettest month. The EPA recommends keeping indoor humidity below 60%, ideally 30 to 50%. Basements can pass 60% on their own in summer, so a dehumidifier matters even without a leak, and anything wet should be dried within 24 to 48 hours.
Mold remediation: what to expectBy main heating fuel, Columbia County homes break down as 38% utility gas, 55% electric, 5% propane and 1% wood. Fires here are likelier to start in the kitchen or the wiring than in the furnace. After any fire, keep the HVAC off until ducts are checked, or soot will travel through the house.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Columbia County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Nevada and Ouachita get more pipe-freeze nights than Columbia. All of its neighbors see more heavy-rain days. Ouachita County has the oldest housing nearby, with 62% of homes built before 1980.
By the numbers
| Factor | Columbia | Arkansas median | Rank |
|---|---|---|---|
| Homes built before 1960 | 23% | 15% | 5 of 75 |
| Homes built before 1980 | 49% | 46% | 31 of 75 |
| Homes built 2000 or later | 21% | 23% | 48 of 75 |
| Manufactured or mobile homes | 17% | 15% | 34 of 75 |
| Vacant homes | 24% | 18% | 14 of 75 |
| Wood or propane heat | 6.2% | 11% | 60 of 75 |
| Nights at 20°F or colder | 3/yr | 6/yr | 68 of 75 |
| Days with 1 inch+ of rain | 18/yr | 17/yr | 22 of 75 |
| Freeze-thaw days | 40/yr | 48/yr | 53 of 75 |
| Muggy nights (65°F+) | 116/yr | 105/yr | 16 of 75 |
Rank 1 is the highest value. Bars run from the lowest to the highest Arkansas county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Columbia County: freezing from January, heavy rain in January, March and April.
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