DeKalb County, Indiana · Auburn
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With 37% of homes built before 1960 and about 39 hard-freeze nights a year, frozen and split pipes are a leading winter risk in the county.
Basements flood here mostly in May. DeKalb County averages 5.7 days a year with an inch of rain or more.
Sewage backups in DeKalb County spike on heavy-rain days, about 5.7 a year, when sewer mains fill up and water finds the lowest drain.
DeKalb County's wettest day in the 2015–2024 record brought 2.36 inches, and about 87 freeze-thaw days a year mean ice dams in some winters.
18% of occupied homes in DeKalb County heat mainly with wood or propane, close to the Indiana county median of 17%.
With 22 muggy nights a year, mold in DeKalb County can appear within days of a leak. Dry first, then clean.
Local risk profile
About 43,807 people live in DeKalb County, 363 square miles in northeast Indiana, in roughly 18,384 homes. Auburn is the county seat; Garrett, Butler and Waterloo are the next largest communities. The county's median home was built in 1975.
47/100 Water Damage Risk Index: Elevated DeKalb County ranks 58 of 92 Indiana counties. See the statewide ranking and method.The three factors where DeKalb County ranks highest compared with other Indiana counties.
DeKalb is on the colder side of Indiana for pipes. It averaged 120 freezing nights a year over 2015–2024, 39 of them at 20°F or colder, cold enough for pipes in outside walls and crawl spaces to freeze. Among 92 Indiana counties that's 6th.
On January 31, 2019 the low fell to about -18°F, and in the stretch ending March 2015 the county went 19 days in a row below freezing. Leaks from split pipes typically appear the day the thaw arrives.
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 28 and the last spring freeze around Apr 27.
DeKalb gets fewer downpours than most Indiana counties, but they still fill basements. About 5.7 days a year bring an inch or more (84th of 92), most often in May, out of 37.7 inches of total precipitation. On October 25, 2021, 2.36 inches fell in a single day. Multi-day storms matter most for basements; the wettest three days on record here totaled 3.46 inches (through September 23, 2021).
The temperature crosses 32°F in both directions on roughly 87 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
55% of homes in DeKalb County predate 1980, close to the Indiana county median of 58.2%, which ranks 53rd of Indiana's 92 counties.
Older and newer homes sit side by side here: 37% predate 1960 and 21% are from 2000 or later. Corroded pipe is the typical failure in the first group, burst supply hoses in the second.
The 1980s and 1990s account for 25% 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.
Here 8% 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.
Beyond water
Summer nights that don't drop below 65°F, a good marker of humid air, come about 22 times a year here, below the Indiana county median of 38. 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 DeKalb County it's 55% utility gas, 24% electric, 17% 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 DeKalb County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Steuben gets more pipe-freeze nights than DeKalb. Allen County has the oldest housing nearby, with 55% of homes built before 1980.
By the numbers
| Factor | DeKalb | Indiana median | Rank |
|---|---|---|---|
| Homes built before 1960 | 37% | 35% | 41 of 92 |
| Homes built before 1980 | 55% | 58% | 53 of 92 |
| Homes built 2000 or later | 21% | 18% | 33 of 92 |
| Manufactured or mobile homes | 7.7% | 6.4% | 35 of 92 |
| Vacant homes | 7% | 9.2% | 65 of 92 |
| Wood or propane heat | 18% | 17% | 44 of 92 |
| Nights at 20°F or colder | 39/yr | 33/yr | 6 of 92 |
| Days with 1 inch+ of rain | 5.7/yr | 7.8/yr | 84 of 92 |
| Freeze-thaw days | 87/yr | 84/yr | 19 of 92 |
| Muggy nights (65°F+) | 22/yr | 38/yr | 91 of 92 |
Rank 1 is the highest value. Bars run from the lowest to the highest Indiana county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in DeKalb County: freezing from November to March, heavy rain in May, June 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