Otsego County, New York · Cooperstown
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With 54% of homes built before 1960 and about 67 hard-freeze nights a year, frozen and split pipes are a leading winter risk in the county.
October brings the most downpours to Otsego County, part of 7.4 heavy-rain days a year. Check the sump first.
Sewage backups in Otsego County spike on heavy-rain days, about 7.4 a year, when sewer mains fill up and water finds the lowest drain.
Otsego County's wettest day in the 2015–2024 record brought 2.84 inches, and about 106 freeze-thaw days a year mean ice dams in some winters.
29% of occupied homes in Otsego County heat mainly with wood or propane, above the New York county median of 19%.
With 4 muggy nights a year, mold in Otsego County can appear within days of a leak. Dry first, then clean.
Local risk profile
About 60,108 people live in Otsego County, 1,002 square miles in eastern New York, in roughly 30,057 homes. Cooperstown is the county seat; Oneonta, West End and Unadilla are the next largest communities. It has some of the oldest housing in the state: the median home went up in 1954.
71/100 Water Damage Risk Index: High Otsego County ranks 4 of 57 New York counties. See the statewide ranking and method.The three factors where Otsego County ranks highest compared with other New York counties.
Otsego is on the colder side of New York for pipes. In the 2015–2024 record the county logged about 67 nights a year at or below 20°F (10th of 57) and 156 below freezing. Twenty degrees is roughly where uninsulated pipes start to freeze.
Cold snaps are the real risk. The worst in the record lasted 37 days below freezing (ending March 2015), and the low bottomed out near -19°F on February 15, 2016.
The freeze season here runs November to April, 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 15 and the last spring freeze around May 11.
Heavy rain is a bigger factor here than in most of New York. Of roughly 47.6 inches of yearly precipitation, the damage comes from the 7.4 days a year with an inch or more, ranked 16th of 57. April, August and October see the most. The single wettest day in the record: 2.84 inches, August 5, 2020. Multi-day storms matter most for basements; the wettest three days on record here totaled 3.51 inches (through October 27, 2021).
Freeze-thaw days, below freezing overnight and above it by afternoon, come about 106 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
70% of homes in Otsego County predate 1980, close to the New York county median of 66.8%, which ranks 19th of New York's 57 counties.
Before 1960 is when 54% of these homes went up. Galvanized supply lines and cast iron drains were standard then, and after 60-plus years both corrode and crack, often out of sight inside a wall or under a slab.
Here 11% of housing is manufactured homes. Check the skirting and the heat tape on the main water line every fall, because that one exposed line is what freezes.
The Census counted 23% of homes as vacant, above the New York county median of 13.9%. Empty houses are where a small leak turns into a large claim, because nobody is there to hear it.
Beyond water
Summer nights that don't drop below 65°F, a good marker of humid air, come about 4 times a year here, below the New York county median of 12. 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 Otsego County's occupied homes: 22% utility gas, 15% electric, 18% propane and 11% wood. Wood and propane heat are 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 Otsego County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Herkimer gets more pipe-freeze nights than Otsego. Montgomery County has the oldest housing nearby, with 78% of homes built before 1980.
By the numbers
| Factor | Otsego | New York median | Rank |
|---|---|---|---|
| Homes built before 1960 | 54% | 45% | 9 of 57 |
| Homes built before 1980 | 70% | 67% | 19 of 57 |
| Homes built 2000 or later | 12% | 13% | 34 of 57 |
| Manufactured or mobile homes | 11% | 7.6% | 15 of 57 |
| Vacant homes | 23% | 14% | 13 of 57 |
| Wood or propane heat | 29% | 19% | 9 of 57 |
| Nights at 20°F or colder | 67/yr | 55/yr | 10 of 57 |
| Days with 1 inch+ of rain | 7.4/yr | 6/yr | 16 of 57 |
| Freeze-thaw days | 106/yr | 101/yr | 12 of 57 |
| Muggy nights (65°F+) | 4/yr | 12/yr | 49 of 57 |
Rank 1 is the highest value. Bars run from the lowest to the highest New York county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Otsego County: freezing from November to April, heavy rain in April, August 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