Delta County, Michigan · Escanaba
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With 41% of homes built before 1960 and about 85 hard-freeze nights a year, frozen and split pipes are a leading winter risk in the county.
April brings the most downpours to Delta County, part of 3.6 heavy-rain days a year. Check the sump first.
41% 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.
Delta County's wettest day in the 2015–2024 record brought 1.8 inches, and about 104 freeze-thaw days a year mean ice dams in some winters.
27% of occupied homes in Delta County heat mainly with wood or propane, close to the Michigan county median of 29%.
About 2 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 36,813 people live in Delta County, 1,171 square miles in Michigan's Upper Peninsula, in roughly 19,845 homes. The county seat is Escanaba, and Gladstone, Rapid River and Rock round out the largest towns. Half the homes here were built before 1970, half after.
61/100 Water Damage Risk Index: Elevated Delta County ranks 16 of 83 Michigan counties. See the statewide ranking and method.The three factors where Delta County ranks highest compared with other Michigan counties.
Delta County gets more hard-freeze nights than most of Michigan. From 2015–2024 it averaged 85 nights a year at 20°F or colder, the range where pipes in exterior walls, crawl spaces and unheated garages freeze, and 172 nights at or below 32°F. That ranks 11th of 83 counties.
On February 20, 2015 the low fell to about -21°F, and in the stretch ending March 2015 the county went 41 days in a row below freezing. Leaks from split pipes typically appear the day the thaw arrives.
Most freezing nights fall from November to April, 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 Oct 14 and end around May 18.
Rainfall is about average for Michigan. The county gets about 33.7 inches of rain and melted snow a year, with 3.6 days of an inch or more (55th of 83). Those downpours cluster in April, September and October, when sump pumps and gutters are tested hardest. The wettest day on record brought 1.8 inches on June 12, 2017. The worst three-day stretch dropped 2.81 inches, ending October 11, 2018, the kind of soaking that overwhelms sump pumps and storm sewers.
The temperature crosses 32°F in both directions on roughly 104 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
66% of homes in Delta County predate 1980, above the Michigan county median of 58.4%, which ranks 18th of Michigan's 83 counties.
41% 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.
Manufactured and mobile homes make up 7% 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.
Beyond water
About 2 nights a year in Delta County stay at 65°F or warmer, a sign of muggy summer air (70th of 83 counties). June 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 expectHeating fuel matters for fire risk. In Delta County it's 61% utility gas, 9% electric, 21% propane and 6% wood. Most homes here heat with gas or electricity, so cooking and electrical faults are the likelier fire sources. Even a contained kitchen fire can send soot through the ductwork to every room.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Delta County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Marquette gets more pipe-freeze nights than Delta. Marquette County has the oldest housing nearby, with 68% of homes built before 1980.
By the numbers
| Factor | Delta | Michigan median | Rank |
|---|---|---|---|
| Homes built before 1960 | 41% | 32% | 15 of 83 |
| Homes built before 1980 | 66% | 58% | 18 of 83 |
| Homes built 2000 or later | 12% | 16% | 69 of 83 |
| Manufactured or mobile homes | 7.3% | 7.3% | 41 of 83 |
| Vacant homes | 20% | 20% | 41 of 83 |
| Wood or propane heat | 27% | 29% | 45 of 83 |
| Nights at 20°F or colder | 85/yr | 54/yr | 11 of 83 |
| Days with 1 inch+ of rain | 3.6/yr | 3.9/yr | 55 of 83 |
| Freeze-thaw days | 104/yr | 95/yr | 10 of 83 |
| Muggy nights (65°F+) | 2/yr | 10/yr | 70 of 83 |
Rank 1 is the highest value. Bars run from the lowest to the highest Michigan county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Delta County: freezing from November to April, heavy rain in April, 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