Roscommon County, Michigan
The dominant drainage class is Somewhat excessively drained and the dominant hydrologic group is A (high infiltration, low runoff). This report summarizes the major soil map units across the survey area to help you understand what to expect when buying, building, or gardening in Roscommon County, Michigan.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Tawas and Lupton mucks, 0 to 1 percent slopes | 42K | Very poorly drained | B/D | Very limited | Very limited |
| Graycalm sand, 0 to 6 percent slopes | 41K | Somewhat excessively drained | A | Not limited | Very limited |
| Water | 37K | Not rated | Not rated | ||
| Graycalm sand, 6 to 18 percent slopes | 28K | Somewhat excessively drained | A | Somewhat limited | Very limited |
| Grayling sand, 0 to 6 percent slopes | 27K | Excessively drained | A | Not limited | Very limited |
| Croswell sand, 0 to 6 percent slopes | 23K | Moderately well drained | A | Very limited | Very limited |
| Au Gres-Kinross-Croswell complex, 0 to 6 percent slopes | 15K | Somewhat poorly drained | A/D | Very limited | Very limited |
| Graycalm-Klacking sands, 0 to 6 percent slopes | 14K | Somewhat excessively drained | A | Not limited | Very limited |
| Histosols and Aquents, ponded | 11K | Very poorly drained | A/D | Very limited | Very limited |
| Tawas-Leafriver mucks | 10K | Very poorly drained | A/D | Very limited | Very limited |
| Croswell-Au Gres sands, 0 to 3 percent slopes | 10K | Moderately well drained | B | Very limited | Very limited |
| Dawson-Loxley peats | 7K | Very poorly drained | A/D | Very limited | Very limited |
| Klacking sand, 0 to 6 percent slopes | 6K | Well drained | A | Not limited | Very limited |
| Grayling sand, 6 to 18 percent slopes | 6K | Excessively drained | A | Somewhat limited | Very limited |
| Deford muck | 6K | Very poorly drained | A/D | Very limited | Very limited |
| Wakeley muck | 5K | Very poorly drained | D | Very limited | Very limited |
| Augres-Deford complex, 0 to 3 percent slopes | 5K | Somewhat poorly drained | A/D | Very limited | Very limited |
| Graycalm-Klacking sands, 6 to 18 percent slopes | 5K | Somewhat excessively drained | A | Somewhat limited | Very limited |
| Au Gres sand, 0 to 3 percent slopes | 5K | Somewhat poorly drained | A/D | Very limited | Very limited |
| Perecheney sand, 0 to 6 percent slopes | 5K | Moderately well drained | B | Very limited | Very limited |
What This Means
Building & Foundations
About 46% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.
Septic Systems
About 87% of soils are rated "very limited" for septic absorption fields. The well-drained soils may actually drain too fast for standard leach fields, allowing effluent to reach groundwater. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Soils tend to drain very quickly, meaning nutrients and water don't stick around long. Raised beds with amended soil, drip irrigation, and heavy mulching will give the best results. Compost is your best friend here — it improves water retention dramatically.