Allegany County Area, New York
The dominant drainage class is Somewhat poorly drained and the dominant hydrologic group is D (very slow infiltration, high 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 Allegany County Area, New York.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Ontusia channery silt loam, 8 to 15 percent slopes | 29K | Somewhat poorly drained | D | Very limited | Very limited |
| Napoli silt loam, 8 to 15 percent slopes | 25K | Somewhat poorly drained | D | Very limited | Very limited |
| Volusia channery silt loam, 8 to 15 percent slopes | 24K | Somewhat poorly drained | D | Very limited | Very limited |
| Wiscoy-Volusia complex, 8 to 15 percent slopes | 23K | Somewhat poorly drained | D | Very limited | Very limited |
| Wiscoy-Volusia complex, 3 to 8 percent slopes | 22K | Somewhat poorly drained | D | Very limited | Very limited |
| Ontusia channery silt loam, 3 to 8 percent slopes | 22K | Somewhat poorly drained | D | Very limited | Very limited |
| Napoli silt loam, 3 to 8 percent slopes | 18K | Somewhat poorly drained | D | Very limited | Very limited |
| Almond silt loam, 3 to 8 percent slopes | 15K | Somewhat poorly drained | D | Very limited | Very limited |
| Ischua channery silt loam, 15 to 25 percent slopes | 14K | Moderately well drained | C/D | Very limited | Very limited |
| Almond silt loam, 0 to 3 percent slopes | 12K | Somewhat poorly drained | D | Very limited | Very limited |
| Willdin channery silt loam, 8 to 15 percent slopes | 11K | Moderately well drained | D | Very limited | Very limited |
| Ischua channery silt loam, 25 to 35 percent slopes | 11K | Moderately well drained | C/D | Very limited | Very limited |
| Mongaup channery silt loam, 3 to 8 percent slopes | 10K | Well drained | C | Very limited | Very limited |
| Gretor channery silt loam, 3 to 8 percent slopes | 10K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Willdin channery silt loam, 15 to 25 percent slopes | 10K | Moderately well drained | D | Very limited | Very limited |
| Volusia channery silt loam, 3 to 8 percent slopes | 10K | Somewhat poorly drained | D | Very limited | Very limited |
| Mardin channery silt loam, 15 to 25 percent slopes | 9K | Moderately well drained | D | Very limited | Very limited |
| Valois-Volusia-Mardin complex, 3 to 15 percent slopes | 8K | Well drained | D | Very limited | Very limited |
| Mongaup channery silt loam, 15 to 25 percent slopes | 8K | Well drained | C | Very limited | Very limited |
| Mongaup channery silt loam, 25 to 35 percent slopes | 8K | Well drained | C | Very limited | Very limited |
What This Means
Building & Foundations
About 100% of soils are rated "very limited" for dwellings with basements. Specific challenges include steep slopes, poor drainage in some areas. A geotechnical assessment is recommended before building.
Septic Systems
About 100% of soils are rated "very limited" for septic absorption fields. Poorly drained soils can't absorb septic effluent effectively. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Many soils hold water for extended periods. Raised beds are highly recommended to improve drainage for vegetables. Well-adapted native plants and water-loving species will do best in natural conditions.