Hillsborough County, New Hampshire, Western Part
The dominant drainage class is Well drained and the dominant hydrologic group is B (moderate infiltration). 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 Hillsborough County, New Hampshire, Western Part.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Monadnock fine sandy loam, 8 to 15 percent slopes, very stony | 38K | Well drained | B | Somewhat limited | Very limited |
| Marlow fine sandy loam, 15 to 35 percent slopes, very stony | 32K | Well drained | C | Very limited | Very limited |
| Lyman-Tunbridge-Rock outcrop complex, 15 to 35 percent slopes | 25K | Well drained | D | Very limited | Very limited |
| Marlow fine sandy loam, 8 to 15 percent slopes, very stony | 21K | Well drained | C | Somewhat limited | Somewhat limited |
| Monadnock fine sandy loam, 15 to 35 percent slopes, very stony | 19K | Well drained | B | Very limited | Very limited |
| Lyman-Tunbridge-Rock outcrop complex, 3 to 15 percent slopes | 12K | Well drained | D | Very limited | Very limited |
| Tunbridge-Lyman-Monadnock complex, stony, 8 to 15 perce nt slopes | 9K | Well drained | B | Very limited | Very limited |
| Lyme fine sandy loam, 0 to 8 percent slopes, very stony | 8K | Poorly drained | B/D | Very limited | Very limited |
| Peru fine sandy loam, 0 to 8 percent slopes, very stony | 8K | Moderately well drained | C/D | Very limited | Very limited |
| Colton gravelly sandy loam, 8 to 15 percent slopes | 7K | Excessively drained | A | Somewhat limited | Very limited |
| Tunbridge-Lyman-Monadnock complex, stony, 15 to 25 perc ent slopes | 7K | Well drained | B | Very limited | Very limited |
| Monadnock fine sandy loam, 0 to 8 percent slopes, very stony | 7K | Well drained | B | Not limited | Very limited |
| Skerry fine sandy loam, 0 to 8 percent slopes, very stony | 7K | Moderately well drained | C/D | Very limited | Very limited |
| Water | 6K | Not rated | Not rated | ||
| Colton gravelly sandy loam, 3 to 8 percent slopes | 6K | Excessively drained | A | Not limited | Very limited |
| Monadnock fine sandy loam, 15 to 35 percent slopes, extremely bouldery | 6K | Well drained | B | Very limited | Very limited |
| Colton gravelly sandy loam, 15 to 60 percent slopes | 6K | Excessively drained | A | Very limited | Very limited |
| Marlow fine sandy loam, 8 to 15 percent slopes | 5K | Well drained | C | Somewhat limited | Somewhat limited |
| Borohemists, ponded | 5K | Very poorly drained | A/D | Very limited | Very limited |
| Pillsbury fine sandy loam, 0 to 8 percent slopes, very stony | 5K | Poorly drained | D | Very limited | Very limited |
What This Means
Building & Foundations
About 62% 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 86% 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.