Buchanan County, Virginia · Grundy
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With 20% of homes built before 1960 and about 20 hard-freeze nights a year, frozen and split pipes are a leading winter risk in the county.
May brings the most downpours to Buchanan County, part of 8.3 heavy-rain days a year. Check the sump first.
Backups often follow heavy rain, which Buchanan County gets about 8.3 days a year, when storm water overloads sewer mains and pushes up through the lowest drain in the house.
In Buchanan County, 3 inches fell on the wettest day of the 2015–2024 record. Storms like that, and ice dams in snowy winters, cause most roof leaks.
5% of occupied homes in Buchanan County heat mainly with wood or propane, below the Virginia county median of 11.9%.
Muggy summer nights, lows of 65°F or more, come about 25 times a year in Buchanan County. Mold after a leak spreads fastest from June through August.
Local risk profile
About 19,415 people live in Buchanan County, 503 square miles in southwest Virginia, in roughly 10,321 homes. Besides Grundy, the county seat, the biggest communities are Vansant, Big Rock and Breaks. Half the homes here were built before 1979, half after.
46/100 Water Damage Risk Index: Elevated Buchanan County ranks 62 of 95 Virginia counties. See the statewide ranking and method.The three factors where Buchanan County ranks highest compared with other Virginia counties.
Buchanan County gets more hard-freeze nights than most of Virginia. It averaged 93 freezing nights a year over 2015–2024, 20 of them at 20°F or colder, cold enough for pipes in outside walls and crawl spaces to freeze. Among 95 Virginia counties that's 22nd.
The longest cold spell was straight 8 days without the temperature rising above freezing, ending in January 2018. The coldest night reached about -12°F on February 20, 2015. Burst pipes usually show up when a spell like that breaks and the ice thaws.
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 28 and end around Apr 22.
Buchanan gets fewer downpours than most Virginia counties, but they still fill basements. Of roughly 50.8 inches of yearly precipitation, the damage comes from the 8.3 days a year with an inch or more, ranked 76th of 95. February, May and July see the most. The single wettest day in the record: 3 inches, August 18, 2021. The worst three-day stretch dropped 5.17 inches, ending September 28, 2024, the kind of soaking that overwhelms sump pumps and storm sewers.
About 84 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
52% of homes in Buchanan County predate 1980, above the Virginia county median of 46.2%, which ranks 21st of Virginia's 95 counties.
The mix runs from 20% built before 1960 to 18% built since 2000, so older neighborhoods bring aging pipe while newer subdivisions bring failed appliance lines and water heaters.
30% date from 1980 to 1999, the window when polybutylene, a gray flexible plastic supply pipe, was used in some homes. It's prone to leaks at the fittings, so it's worth checking for in a house from those years.
36% of homes are manufactured or mobile homes, above the Virginia county median of 9.6%. 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 27% of homes as vacant, above the Virginia county median of 15%. Empty houses are where a small leak turns into a large claim, because nobody is there to hear it.
Beyond water
About 25 nights a year in Buchanan County stay at 65°F or warmer, a sign of muggy summer air (74th of 95 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 expectHeating fuel matters for fire risk. In Buchanan County it's 2% utility gas, 91% electric, 3% propane and 2% 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 Buchanan County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Tazewell gets more pipe-freeze nights than Buchanan. It also has the most heavy-rain days in its area. Tazewell County has the oldest housing nearby, with 60% of homes built before 1980.
By the numbers
| Factor | Buchanan | Virginia median | Rank |
|---|---|---|---|
| Homes built before 1960 | 20% | 20% | 47 of 95 |
| Homes built before 1980 | 52% | 46% | 21 of 95 |
| Homes built 2000 or later | 18% | 25% | 81 of 95 |
| Manufactured or mobile homes | 36% | 9.6% | 1 of 95 |
| Vacant homes | 27% | 15% | 13 of 95 |
| Wood or propane heat | 4.9% | 12% | 87 of 95 |
| Nights at 20°F or colder | 20/yr | 14/yr | 22 of 95 |
| Days with 1 inch+ of rain | 8.3/yr | 10/yr | 76 of 95 |
| Freeze-thaw days | 84/yr | 77/yr | 28 of 95 |
| Muggy nights (65°F+) | 25/yr | 64/yr | 74 of 95 |
Rank 1 is the highest value. Bars run from the lowest to the highest Virginia county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Buchanan County: freezing from November to March, heavy rain in February, May and July.
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