Logan County, Colorado
USDA's soil survey flags shrink-swell clay on 9% of Logan County's mapped land and a shallow water table under basements on 5%, both below the national shares of 15% and 29%. 11.2% of the county is in drought on the October 13, 2026 Drought Monitor map.
FEMA's flood data list 1 flood losses here since 2016. 72% of homes were built before 1980, against 50% nationally; the median home dates from 1964.
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 Logan County
| Expansive clay (limits slab homes) | 9.4% |
| High water table (limits basements) | 5.0% |
| Septic fields very limited | 51.5% |
| Clay swell (LEP, by area) | 3.4% |
| High-swell land (LEP 6%+) | 20.2% |
| Mapped soil | 1,180,903 acres |
| Soil series | Share here | Series nationally: expansive clay |
|---|---|---|
| Valent | 10% | n/a |
| Platner | 8% | n/a |
| Rago | 6% | n/a |
| Wages | 6% | n/a |
| Dailey | 4% | n/a |
| Nunn | 4% | n/a |
How we count · survey areas CO075 (2025-08-29)
What the numbers mean here
Rain over the 12 months to August 2026: 14.08 in, 2.14 in below the 1991-2020 average year of 16.22 in.
USDA rates 51% of the land very limited for septic absorption fields.
With shrink-swell clay on 9% and a shallow water table on 5% of the land, the soil survey points to neither problem across most of Logan County; conditions still vary lot by lot.
Drought
11.2% of the county is in drought (D1 or worse) on the October 13, 2026 map. Part of the county was in drought in 41 of the last 52 weeks; the most was 100% of its area, in 25 weeks, most recently on the June 30, 2026 map.
| Category, October 13, 2026 | Share of county |
|---|---|
| D0 abnormally dry or worse | 77.3% |
| D1 moderate drought or worse | 11.2% |
| D2 severe or worse | 0% |
| D3 extreme or worse | 0% |
| D4 exceptional | 0% |
Flood losses since 2016
1 flood losses since 2016, $5,436 paid. The worst year was 2023, with 1.
| Year | Flood losses |
|---|---|
| 2016 | 0 |
| 2017 | 0 |
| 2018 | 0 |
| 2019 | 0 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 0 |
| 2023 | 1 |
| 2024 | 0 |
| 2025 | 0 |
| 2026 to date | 0 |
Rain
| Average year, 1991-2020 | 16.22 in |
| 12 months to August 2026 | 14.08 in (-2.14) |
| 2025 | 18.04 in (+1.82) |
| Wettest year since 1895 | 1915: 25.59 in |
| Driest year since 1895 | 2012: 9.36 in |
| Days with 1 inch or more, normal at LEROY 5 WSW (16 mi away) | 3 |
Homes
| Housing units | 8,741 |
| Median year built | 1964 |
| Built before 1980 | 72% |
| Built 2000 or later | 12% |
| Owner-occupied | 66% |
| Median value, owner-occupied | $245,300 |
| Single-family detached | 74% |
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 |
|---|---|---|---|
| Cheyenne County, NE | 34 mi | 1% | 2% |
| Sedgwick County, CO | 40 mi | under 1% | 5% |
| Phillips County, CO | 40 mi | 1% | under 1% |
| Kimball County, NE | 46 mi | 1% | 1% |
| Deuel County, NE | 48 mi | 1% | 3% |
| Morgan County, CO | 50 mi | 10% | 3% |
| Washington County, CO | 53 mi | 11% | 1% |
| Yuma County, CO | 61 mi | 5% | 1% |
Sources: USDA SSURGO (August 29, 2025) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · NOAA (August 2026) · Census ACS 2020-2024. Methods · Data status