Graham County, Kansas
USDA's soil survey flags shrink-swell clay on 3% of Graham County's mapped land and a shallow water table under basements on 1%, both below the national shares of 15% and 29%. None of the county is in drought on the October 13, 2026 Drought Monitor map.
FEMA's flood data list no flood losses here since 2016. 80% of homes were built before 1980, against 50% nationally; the median home dates from 1957.
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 Graham County
| Expansive clay (limits slab homes) | 2.7% |
| High water table (limits basements) | 1.0% |
| Septic fields very limited | 48.2% |
| Clay swell (LEP, by area) | 3.6% |
| High-swell land (LEP 6%+) | 2.7% |
| Mapped soil | 575,079 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Holdrege | 28% | 0% |
| Uly | 21% | n/a |
| Penden | 16% | n/a |
| Coly | 11% | n/a |
| Humbarger | 7% | n/a |
| Wakeen | 2% | n/a |
How we count · survey areas KS065 (2025-08-27)
What the numbers mean here
Rain over the 12 months to August 2026: 18.86 in, 4.00 in below the 1991-2020 average year of 22.86 in.
With shrink-swell clay on 3% and a shallow water table on 1% of the land, the soil survey points to neither problem across most of Graham County; conditions still vary lot by lot.
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 26 of the last 52 weeks; the most was 100% of its area, in 7 weeks, most recently on the June 2, 2026 map.
| Category, October 13, 2026 | Share of county |
|---|---|
| D0 abnormally dry or worse | 0% |
| D1 moderate drought or worse | 0% |
| D2 severe or worse | 0% |
| D3 extreme or worse | 0% |
| D4 exceptional | 0% |
Flood losses since 2016
FEMA's flood data list no flood losses in Graham County since 2016.
Rain
| Average year, 1991-2020 | 22.86 in |
| 12 months to August 2026 | 18.86 in (-4.00) |
| 2025 | 20.08 in (-2.78) |
| Wettest year since 1895 | 1951: 36.10 in |
| Driest year since 1895 | 1910: 11.53 in |
| Days with 1 inch or more, normal at HILL CITY 1E (3 mi away) | 5.7 |
Homes
| Housing units | 1,415 |
| Median year built | 1957 |
| Built before 1980 | 80% |
| Built 2000 or later | 3% |
| Owner-occupied | 79% |
| Median value, owner-occupied | $89,900 |
| Single-family detached | 88% |
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 |
|---|---|---|---|
| Norton County, KS | 30 mi | 2% | 1% |
| Rooks County, KS | 30 mi | 26% | 1% |
| Trego County, KS | 30 mi | 26% | 1% |
| Sheridan County, KS | 30 mi | 2% | 2% |
| Phillips County, KS | 41 mi | 6% | 1% |
| Decatur County, KS | 43 mi | 3% | 2% |
| Ellis County, KS | 43 mi | 36% | 1% |
| Gove County, KS | 44 mi | 11% | 1% |
Sources: USDA SSURGO (August 27, 2025) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · NOAA (August 2026) · Census ACS 2020-2024. Methods · Data status