Navarro County, Texas · Corsicana
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Pipes freeze in Navarro County on about 3 nights a year, mostly midwinter. Older homes, 20% of the stock here, are most at risk.
May brings the most downpours to Navarro County, part of 12.6 heavy-rain days a year. Check the sump first.
Sewage backups in Navarro County spike on heavy-rain days, about 12.6 a year, when sewer mains fill up and water finds the lowest drain.
Navarro County's wettest day in the 2015–2024 record brought 10.88 inches, and about 20 freeze-thaw days a year mean ice dams in some winters.
6% of occupied homes in Navarro County heat mainly with wood or propane, below the Texas county median of 6.5%.
Muggy summer nights, lows of 65°F or more, come about 140 times a year in Navarro County. Mold after a leak spreads fastest from June through August.
Local risk profile
About 54,711 people live in Navarro County, 1,010 square miles in eastern Texas, in roughly 22,191 homes. The county seat is Corsicana, and Kerens, Dawson and Rice round out the largest towns. The county's median home was built in 1983.
59/100 Water Damage Risk Index: Elevated Navarro County ranks 56 of 232 Texas counties. See the statewide ranking and method.The three factors where Navarro County ranks highest compared with other Texas counties.
For frozen pipes, Navarro County is a typical Texas county, which is still plenty. It averaged 22 freezing nights a year over 2015–2024, 3 of them at 20°F or colder, cold enough for pipes in outside walls and crawl spaces to freeze. Among 232 Texas counties that's 94th.
On February 16, 2021 the low fell to about 0°F, and in the stretch ending February 2021 the county went 8 days in a row below freezing. Leaks from split pipes typically appear the day the thaw arrives.
With only about 22 freezing nights a year, many homes here aren't built for cold, so a single arctic outbreak can burst pipes across the county. The record low in this data was about 0°F, on February 16, 2021.
Heavy rain is a bigger factor here than in most of Texas. The county gets about 44.4 inches of rain and melted snow a year, with 12.6 days of an inch or more (60th of 232). Those downpours cluster in April, May and October, when sump pumps and gutters are tested hardest. The wettest day on record brought 10.88 inches on October 24, 2015. Multi-day storms matter most for basements; the wettest three days on record here totaled 15.73 inches (through October 25, 2015).
Freeze-thaw days, below freezing overnight and above it by afternoon, come about 20 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
Texas's 232 counties range widely in housing age; Navarro ranks 109th, with 47% of its homes built before 1980.
Older and newer homes sit side by side here: 20% predate 1960 and 27% 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 26% 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.
Manufactured and mobile homes make up 19% 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
Summer nights that don't drop below 65°F, a good marker of humid air, come about 140 times a year here, close to the Texas county median of 129. 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 expectMain heating fuel in Navarro County's occupied homes: 27% utility gas, 66% electric, 5% propane and under 1% wood. Heating equipment, cooking and electrical failures cause most home fires nationally. Even a small kitchen fire can leave soot through the whole house, because smoke follows air currents into closets, ducts and attic space.
Fire and smoke cleanup: first stepsCoverage
Calls connect to restoration companies that work across Navarro County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Navarro gets more pipe-freeze nights than any of its neighbors. Its housing is the oldest in the area by share of homes built before 1980.
By the numbers
| Factor | Navarro | Texas median | Rank |
|---|---|---|---|
| Homes built before 1960 | 20% | 20% | 116 of 232 |
| Homes built before 1980 | 47% | 46% | 109 of 232 |
| Homes built 2000 or later | 27% | 26% | 109 of 232 |
| Manufactured or mobile homes | 19% | 13% | 60 of 232 |
| Vacant homes | 14% | 17% | 141 of 232 |
| Wood or propane heat | 5.8% | 6.5% | 132 of 232 |
| Nights at 20°F or colder | 3/yr | 3/yr | 94 of 232 |
| Days with 1 inch+ of rain | 13/yr | 7.8/yr | 60 of 232 |
| Freeze-thaw days | 20/yr | 27/yr | 149 of 232 |
| Muggy nights (65°F+) | 140/yr | 129/yr | 82 of 232 |
Rank 1 is the highest value. Bars run from the lowest to the highest Texas county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Navarro County: freezing from midwinter, heavy rain in April, May 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