Calloway County, Kentucky
A shallow water table limits basements on 54% of Calloway County's mapped land, a higher share than 70% of US counties. Shrink-swell clay limits houses without basements on under 1%.
None of the county is in drought on the October 13, 2026 Drought Monitor map. FEMA's flood data list 12 flood losses here since 2016. 46% of homes were built before 1980, against 50% nationally; the median home dates from 1983.
Data as of October 13, 2026 · sources
expansive clay: shrink-swell limits slab homes
high water table: limits basements
in drought, October 13, 2026
of homes built before 1980
Soil under Calloway County
| Expansive clay (limits slab homes) | 0.1% |
| High water table (limits basements) | 54.0% |
| Septic fields very limited | 74.5% |
| Clay swell (LEP, by area) | 1.7% |
| High-swell land (LEP 6%+) | 0.1% |
| Urban land, not rated | 1.1% |
| Mapped soil | 262,951 acres |
| Soil series | Share here | Series nationally: high water table |
|---|---|---|
| Grenada | 19% | n/a |
| Brandon | 11% | n/a |
| Calloway | 8% | n/a |
| Purchase | 6% | n/a |
| Lax | 5% | n/a |
| Collins | 4% | n/a |
How we count · survey areas KY610 (2025-09-08)
What the numbers mean here
On 54% of Calloway County's mapped land, soil stays saturated within about 6 feet of the surface for part of the year, which is basement depth.
Rain over the 12 months to August 2026: 42.74 in, 10.34 in below the 1991-2020 average year of 53.08 in.
USDA rates 75% of the land very limited for septic absorption fields.
Drought
0% of the county is in drought (D1 or worse) on the October 13, 2026 map. Part of the county was in drought in 27 of the last 52 weeks; the most was 100% of its area, in 16 weeks, most recently on the June 9, 2026 map.
| Category, October 13, 2026 | Share of county |
|---|---|
| D0 abnormally dry or worse | 39.1% |
| D1 moderate drought or worse | 0% |
| D2 severe or worse | 0% |
| D3 extreme or worse | 0% |
| D4 exceptional | 0% |
Flood losses since 2016
12 flood losses since 2016, $1.0 million paid. The worst year was 2016, with 5.
| Year | Flood losses |
|---|---|
| 2016 | 5 |
| 2017 | 1 |
| 2018 | 0 |
| 2019 | 1 |
| 2020 | 0 |
| 2021 | 3 |
| 2022 | 0 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 0 |
| 2026 to date | 0 |
Rain
| Average year, 1991-2020 | 53.08 in |
| 12 months to August 2026 | 42.74 in (-10.34) |
| 2025 | 56.95 in (+3.87) |
| Wettest year since 1895 | 2011: 71.46 in |
| Driest year since 1895 | 1941: 30.17 in |
| Days with 1 inch or more, normal at MURRAY (2 mi away) | 16.8 |
Homes
| Housing units | 18,106 |
| Median year built | 1983 |
| Built before 1980 | 46% |
| Built 2000 or later | 26% |
| Owner-occupied | 64% |
| Median value, owner-occupied | $183,200 |
| Single-family detached | 64% |
What repairs cost
Published ranges from cost guides, not quotes. More sources, and where they disagree.
Nearby counties
| Place | Distance | Expansive clay | High water table |
|---|---|---|---|
| Marshall County, KY | 18 mi | 1% | 57% |
| Henry County, TN | 21 mi | under 1% | 36% |
| Graves County, KY | 22 mi | under 1% | 60% |
| Trigg County, KY | 26 mi | under 1% | 13% |
| Stewart County, TN | 29 mi | under 1% | 27% |
| Lyon County, KY | 30 mi | 0% | 18% |
| Weakley County, TN | 33 mi | 0% | 84% |
| McCracken County, KY | 39 mi | 6% | 73% |
Sources: USDA SSURGO (September 8, 2025) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · NOAA (August 2026) · Census ACS 2020-2024. Methods · Data status