Allegany County, Maryland · Cumberland
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With 51% 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.
September brings the most downpours to Allegany County, part of 6.5 heavy-rain days a year. Check the sump first.
51% of homes here predate 1960, when clay and cast iron sewer laterals were standard. Roots and cracks in those lines are a common cause of backups.
In Allegany County, 3.2 inches fell on the wettest day of the 2015–2024 record. Storms like that, and ice dams in snowy winters, cause most roof leaks.
9% of occupied homes in Allegany County heat mainly with wood or propane, close to the Maryland county median of 9.3%.
With 21 muggy nights a year, mold in Allegany County can appear within days of a leak. Dry first, then clean.
Local risk profile
With 32,720 homes and around 67,452 residents, Allegany County is 422 square miles of northwest Maryland. Besides Cumberland, the county seat, the biggest communities are Frostburg, Cresaptown and La Vale. It has some of the oldest housing in the state: the median home went up in 1959.
60/100 Water Damage Risk Index: Elevated Allegany County ranks 3 of 23 Maryland counties. See the statewide ranking and method.The three factors where Allegany County ranks highest compared with other Maryland counties.
Allegany is on the colder side of Maryland for pipes. 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 107 nights at or below 32°F. That ranks 2nd of 23 counties.
Cold snaps are the real risk. The worst in the record lasted 14 days below freezing (ending January 2018), and the low bottomed out near -4°F on January 23, 2022.
The freeze season here runs November to March, with January the coldest. If you travel then, leave the thermostat at 55°F or above and open sink cabinets on outside walls.
On average the first fall freeze arrives around Oct 24 and the last spring freeze around Apr 23.
Allegany gets fewer downpours than most Maryland counties, but they still fill basements. About 6.5 days a year bring an inch or more (22nd of 23), most often in September, out of 41.1 inches of total precipitation. On August 9, 2024, 3.2 inches fell in a single day. Multi-day storms matter most for basements; the wettest three days on record here totaled 5.86 inches (through September 10, 2018).
Freeze-thaw days, below freezing overnight and above it by afternoon, come about 92 times a year here. They're the main driver of ice dams and of water working its way through foundation cracks in late winter.
Housing
Maryland's 23 counties range widely in housing age; Allegany ranks 1st, with 77% of its homes built before 1980.
51% were built before 1960. Homes from that era often still have galvanized steel supply pipe, which rusts from the inside until it pinholes, and cast iron drains that crack with age. Slow leaks behind walls are a common start to water damage in these houses.
With 16% 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 21 nights a year in Allegany County stay at 65°F or warmer, a sign of muggy summer air (22nd of 23 counties). May is the wettest month. Keep indoor humidity under 60%, as the EPA advises, and dry any leak within 24 to 48 hours; in a humid month a wet basement left alone won't dry by itself.
Mold remediation: what to expectMain heating fuel in Allegany County's occupied homes: 50% utility gas, 30% electric, 4% propane and 5% wood. Wood heat is more common here than in most Maryland counties. Heating equipment is one of the leading causes of home fires nationally, and the NFPA recommends having chimneys and vents inspected every year.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Allegany County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Garrett gets more pipe-freeze nights than Allegany. Its housing is the oldest in the area by share of homes built before 1980.
By the numbers
| Factor | Allegany | Maryland median | Rank |
|---|---|---|---|
| Homes built before 1960 | 51% | 20% | 1 of 23 |
| Homes built before 1980 | 77% | 44% | 1 of 23 |
| Homes built 2000 or later | 7.9% | 23% | 23 of 23 |
| Manufactured or mobile homes | 4.5% | 2.6% | 7 of 23 |
| Vacant homes | 16% | 7.7% | 7 of 23 |
| Wood or propane heat | 8.5% | 9.3% | 14 of 23 |
| Nights at 20°F or colder | 28/yr | 12/yr | 2 of 23 |
| Days with 1 inch+ of rain | 6.5/yr | 9.3/yr | 22 of 23 |
| Freeze-thaw days | 92/yr | 70/yr | 2 of 23 |
| Muggy nights (65°F+) | 21/yr | 76/yr | 22 of 23 |
Rank 1 is the highest value. Bars run from the lowest to the highest Maryland county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Allegany County: freezing from November to March, heavy rain in June, September and October.
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