Cowley County, Kansas
Shrink-swell clay limits houses without basements on 59% of Cowley County's mapped land, a higher share than 94% of US counties. A shallow water table limits basements on 12%.
100% of the county is in drought on the October 13, 2026 Drought Monitor map. FEMA's flood data list 10 flood losses here since 2016. 70% of homes were built before 1980, against 50% nationally; the median home dates from 1961.
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 Cowley County
| Expansive clay (limits slab homes) | 59.1% |
| High water table (limits basements) | 11.6% |
| Septic fields very limited | 93.0% |
| Clay swell (LEP, by area) | 6.6% |
| High-swell land (LEP 6%+) | 58.4% |
| Mapped soil | 724,845 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Labette | 13% | n/a |
| Sogn | 12% | n/a |
| Martin | 10% | n/a |
| Clime | 8% | n/a |
| Irwin | 6% | n/a |
| Florence | 6% | n/a |
How we count · survey areas KS035 (2025-08-26)
What the numbers mean here
Clay swell averages a linear extensibility of 6.6% by land area here, and 58% of the land reaches USDA's high class (6% or more). Clay like that swells when wet and shrinks when dry, under 59% of the mapped land.
Clay shrinks as it dries: 100% of the county is in drought on the latest map, and 59% of Cowley County's mapped land has shrink-swell clay.
Rain over the 12 months to August 2026: 32.98 in, 5.32 in below the 1991-2020 average year of 38.30 in.
USDA rates 93% of the land very limited for septic absorption fields.
Drought
100% 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 8 weeks, most recently on the October 13, 2026 map.
| Category, October 13, 2026 | Share of county |
|---|---|
| D0 abnormally dry or worse | 100% |
| D1 moderate drought or worse | 100% |
| D2 severe or worse | 76.1% |
| D3 extreme or worse | 0% |
| D4 exceptional | 0% |
Flood losses since 2016
10 flood losses since 2016, $571,737 paid. The worst year was 2019, with 9.
| Year | Flood losses |
|---|---|
| 2016 | 0 |
| 2017 | 1 |
| 2018 | 0 |
| 2019 | 9 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 0 |
| 2025 | 0 |
| 2026 to date | 0 |
Rain
| Average year, 1991-2020 | 38.30 in |
| 12 months to August 2026 | 32.98 in (-5.32) |
| 2025 | 46.82 in (+8.52) |
| Wettest year since 1895 | 2019: 57.53 in |
| Driest year since 1895 | 1910: 18.33 in |
| Days with 1 inch or more, normal at WINFIELD 3NE (7 mi away) | 12.5 |
Homes
| Housing units | 15,682 |
| Median year built | 1961 |
| Built before 1980 | 70% |
| Built 2000 or later | 10% |
| Owner-occupied | 68% |
| Median value, owner-occupied | $120,900 |
| Single-family detached | 75% |
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 |
|---|---|---|---|
| Chautauqua County, KS | 33 mi | 67% | 51% |
| Kay County, OK | 34 mi | 59% | 19% |
| Elk County, KS | 36 mi | 70% | 45% |
| Sumner County, KS | 36 mi | 47% | 8% |
| Butler County, KS | 37 mi | 73% | 8% |
| Sedgwick County, KS | 46 mi | 42% | 11% |
| Osage County, OK | 48 mi | 41% | 40% |
| Greenwood County, KS | 55 mi | 78% | 39% |
Sources: USDA SSURGO (August 26, 2025) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · NOAA (August 2026) · Census ACS 2020-2024. Methods · Data status