Franklin County Area and Part of Somerset County, Maine
The most common soil here is Peru, on about 18% of the land: a fine sandy loam, gritty and crumbly. Marlow and Colonel come next.
About 39% of the land drains well, and 41% stays wet for long stretches; groundwater comes within two feet of the surface under 73% of it.
USDA rates 95% of the land very limited for a standard septic drain field, and 88% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 2% of the land floods occasionally or more, and bedrock lies within 40 inches under 19% of it.
Soils change over short distances, so look up an address below for the soil at that exact spot and the reasons behind each rating.
The soils you're most likely standing on
The biggest named soils in Franklin County Area and Part of Somerset County, Maine, each drawn five feet deep from its official USDA description, in its recorded colors.
Dots mark gravel; white flecks mark lime. Shares are by acres across the survey area, and each mapped patch usually mixes several of these soils.
The biggest mapped areas
The dominant drainage class is Well drained and the dominant hydrologic group is D (very slow infiltration, high runoff). The most common soil order is Spodosols — acidic forest soils with a distinctive leached layer, common under conifers. 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 Franklin County Area and Part of Somerset County, Maine. Search your address to find the exact soil composition, drainage, and series details at your specific location.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Colonel-Peru association, 3 to 15 percent slopes, very stony | 126K | Somewhat poorly drained | D | Very limited | Very limited |
| Marlow-Peru association, 15 to 35 percent slopes, very stony | 68K | Well drained | C | Very limited | Very limited |
| Peru-Marlow association, 3 to 15 percent slopes, very stony | 62K | Moderately well drained | C/D | Very limited | Very limited |
| Brayton-Colonel association, 0 to 8 percent slopes, very stony | 36K | Poorly drained | D | Very limited | Very limited |
| Lyman-Tunbridge-Abram complex, 15 to 35 percent slopes, rocky | 35K | Well drained | D | Very limited | Very limited |
| Brayton-Peacham-Pondicherry association, 0 to 2 percent slopes, very stony | 34K | Very poorly drained | D | Very limited | Very limited |
| Water | 29K | Not rated | Not rated | ||
| Telos-Chesuncook association, 3 to 15 percent slopes, very stony | 28K | Somewhat poorly drained | D | Very limited | Very limited |
| Monarda-Telos complex, 0 to 8 percent slopes, very stony | 23K | Poorly drained | D | Very limited | Very limited |
| Lyman-Tunbridge-Abram complex, 3 to 15 percent slopes, rocky | 22K | Somewhat excessively drained | D | Very limited | Very limited |
| Tunbridge-Berkshire-Peru association, 3 to 15 percent slopes, very stony | 18K | Well drained | C/D | Very limited | Very limited |
| Ricker-Saddleback association, very steep | 15K | Well drained | D | Very limited | Very limited |
| Sisk-Surplus association, moderately steep, very stony | 13K | Well drained | C/D | Very limited | Very limited |
| Bucksport and Pondicherry mucks, 0 to 2 percent slopes | 11K | Very poorly drained | B/D | Very limited | Very limited |
| Saddleback-Mahoosuc-Sisk association, very steep, very stony | 10K | Well drained | D | Very limited | Very limited |
| Monadnock-Berkshire complex, 0 to 15 percent slopes, very stony | 10K | Well drained | B | Somewhat limited | Very limited |
| Monadnock-Hermon association, 3 to 15 percent slopes, very stony | 9K | Well drained | B | Somewhat limited | Very limited |
| Peru fine sandy loam, 3 to 8 percent slopes | 9K | Moderately well drained | C/D | Very limited | Very limited |
| Adams-Croghan association, 0 to 15 percent slopes | 9K | Somewhat excessively drained | A | Somewhat limited | Very limited |
| Chesuncook-Elliottsville-Telos association, 3 to 15 percent slopes, very stony | 8K | Moderately well drained | C/D | Very limited | Very limited |
Soil Orders in This Area
The USDA classifies every soil into one of 12 soil orders. Here are the dominant orders found in this survey area.
What This Means
Building & Foundations
About 88% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, poor drainage in some areas. A geotechnical assessment is recommended before building.
Septic Systems
About 95% of soils are rated "very limited" for septic absorption fields. Despite good drainage overall, limitations may stem from shallow bedrock, steep slopes, or seasonal conditions. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Well-drained soils on sloped terrain — good for most plants but watch for erosion. Terracing, contour planting, and mulching help retain moisture and topsoil. Drip irrigation is more effective than sprinklers on slopes.