Issaquena County, Mississippi · Mayersville
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With 8% of homes built before 1960 and about 2 hard-freeze nights a year, frozen and split pipes are a leading winter risk in the county.
Heavy rain days of an inch or more come about 15.2 times a year here, most often in April. A sump pump that hasn't run since last season is a common weak point.
Backups often follow heavy rain, which Issaquena County gets about 15.2 days a year, when storm water overloads sewer mains and pushes up through the lowest drain in the house.
In Issaquena County, 5.12 inches fell on the wettest day of the 2015–2024 record. Storms like that, and ice dams in snowy winters, cause most roof leaks.
40% of occupied homes in Issaquena County heat mainly with wood or propane, above the Mississippi county median of 15.1%.
With 134 muggy nights a year, mold in Issaquena County can appear within days of a leak. Dry first, then clean.
Local risk profile
Issaquena County covers 413 square miles of western Mississippi, with about 928 residents and 421 homes. The county seat is Mayersville, and Valley Park and Grace round out the largest towns. Half the homes here were built before 1983, half after.
24/100 Water Damage Risk Index: Lower Issaquena County ranks 82 of 82 Mississippi counties. See the statewide ranking and method.The three factors where Issaquena County ranks highest compared with other Mississippi counties.
Pipe-freeze risk in Issaquena County sits near the middle of the state. In the 2015–2024 record the county logged about 2 nights a year at or below 20°F (47th of 82) and 25 below freezing. Twenty degrees is roughly where uninsulated pipes start to freeze.
Most freezing nights fall from midwinter, 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 Nov 19 and end around Feb 22.
Issaquena gets fewer downpours than most Mississippi counties, but they still fill basements. About 15.2 days a year bring an inch or more (74th of 82), most often in April, out of 57 inches of total precipitation. On October 26, 2015, 5.12 inches fell in a single day. The worst three-day stretch dropped 8.46 inches, ending August 25, 2022, the kind of soaking that overwhelms sump pumps and storm sewers.
About 24 days a year swing from below freezing at night to above freezing by day. Those freeze-thaw cycles feed ice dams on roofs, open cracks in foundations and driveways, and stress pipes that are already marginal.
Housing
Mississippi's 82 counties range widely in housing age; Issaquena ranks 41st, with 45% of its homes built before 1980.
The mix runs from 8% built before 1960 to 17% built since 2000, so older neighborhoods bring aging pipe while newer subdivisions bring failed appliance lines and water heaters.
The 1980s and 1990s account for 38% 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 18% 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.
Renters occupy 34% of homes. If you rent, the building is usually the landlord's to repair, but your belongings are only covered by renters insurance.
Beyond water
Issaquena County averages 134 warm, muggy nights a year (lows of 65°F or more) and gets the most rain in April. 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 Issaquena County's occupied homes: 9% utility gas, 51% electric, 40% propane and under 1% wood. Propane heat is more common here than in most Mississippi 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 Issaquena County. The largest communities by population:
Population from ACS 2020-2024 5-year estimates. Townships and unincorporated areas are covered too.
Nearby
Washington gets more pipe-freeze nights than Issaquena. All of its neighbors see more heavy-rain days. Washington County has the oldest housing nearby, with 66% of homes built before 1980.
By the numbers
| Factor | Issaquena | Mississippi median | Rank |
|---|---|---|---|
| Homes built before 1960 | 7.6% | 15% | 75 of 82 |
| Homes built before 1980 | 45% | 45% | 41 of 82 |
| Homes built 2000 or later | 17% | 23% | 69 of 82 |
| Manufactured or mobile homes | 18% | 20% | 53 of 82 |
| Vacant homes | 17% | 17% | 39 of 82 |
| Wood or propane heat | 40% | 15% | 2 of 82 |
| Nights at 20°F or colder | 2/yr | 3/yr | 47 of 82 |
| Days with 1 inch+ of rain | 15/yr | 16/yr | 74 of 82 |
| Freeze-thaw days | 24/yr | 32/yr | 59 of 82 |
| Muggy nights (65°F+) | 134/yr | 125/yr | 22 of 82 |
Rank 1 is the highest value. Bars run from the lowest to the highest Mississippi county; the tick marks the median; orange means higher water damage risk than the median, green means lower.
Questions
Peak risk months in Issaquena County: freezing from midwinter, heavy rain in January, February and April.
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