Roscommon County, Michigan
A shallow water table limits basements on 49% of Roscommon County's mapped land, a higher share than 66% of US counties. Shrink-swell clay limits houses without basements on 1%.
None of the county is in drought on the October 13, 2026 Drought Monitor map. FEMA's flood data list 3 flood losses here since 2016. 59% of homes were built before 1980, against 50% nationally; the median home dates from 1976.
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 Roscommon County
| Expansive clay (limits slab homes) | 0.6% |
| High water table (limits basements) | 49.4% |
| Septic fields very limited | 89.1% |
| Clay swell (LEP, by area) | 1.3% |
| High-swell land (LEP 6%+) | 4.0% |
| Mapped soil | 371,251 acres |
| Soil series | Share here | Series nationally: high water table |
|---|---|---|
| Graycalm | 20% | n/a |
| Grayling | 9% | n/a |
| Croswell | 8% | n/a |
| Tawas | 7% | n/a |
| Au Gres | 7% | n/a |
| Klacking | 6% | n/a |
How we count · survey areas MI143 (2025-09-04)
What the numbers mean here
On 49% of Roscommon 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: 38.78 in, 5.86 in above the 1991-2020 average year of 32.92 in.
USDA rates 89% 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 12 of the last 52 weeks; the most was 100% of its area, in 7 weeks, most recently on the January 6, 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
3 flood losses since 2016, $93,200 paid. The worst year was 2026, with 2.
| Year | Flood losses |
|---|---|
| 2016 | 0 |
| 2017 | 0 |
| 2018 | 0 |
| 2019 | 1 |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 0 |
| 2025 | 0 |
| 2026 to date | 2 |
Rain
| Average year, 1991-2020 | 32.92 in |
| 12 months to August 2026 | 38.78 in (+5.86) |
| 2025 | 30.22 in (-2.70) |
| Wettest year since 1895 | 2019: 41.97 in |
| Driest year since 1895 | 1910: 20.26 in |
| Days with 1 inch or more, normal at HOUGHTON LK ROSCOMMON AP (3 mi away) | 4.3 |
Homes
| Housing units | 23,213 |
| Median year built | 1976 |
| Built before 1980 | 59% |
| Built 2000 or later | 13% |
| Owner-occupied | 85% |
| Median value, owner-occupied | $158,700 |
| Single-family detached | 87% |
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 |
|---|---|---|---|
| Crawford County, MI | 23 mi | under 1% | 19% |
| Missaukee County, MI | 23 mi | 3% | 40% |
| Ogemaw County, MI | 24 mi | 10% | 39% |
| Gladwin County, MI | 27 mi | 2% | 72% |
| Clare County, MI | 27 mi | 0% | 36% |
| Kalkaska County, MI | 33 mi | 1% | 28% |
| Oscoda County, MI | 34 mi | 4% | 21% |
| Osceola County, MI | 42 mi | 1% | 33% |
Sources: USDA SSURGO (September 4, 2025) · US Drought Monitor (October 13, 2026) · FEMA NFIP v3 (September 9, 2026) · NOAA (August 2026) · Census ACS 2020-2024. Methods · Data status