Soil series profile

Bernardston soil series

Bernardston is a well drained soil with a gravelly silt loam surface, mapped on 215,810 acres in 13 counties across 4 states. Hydrologic group C/D.

#1647 by mapped area coarse-loamy Typic Dystrochrepts (Inceptisols)

Drainage class
Well drained
97% of mapped acres
Hydrologic group
C/D
40% of mapped acres
Typical topsoil pH
5.3
strongly acidic · range 5.3–5.3
Mapped area
216k
acres in 13 counties, 4 states

Typical Bernardston profile

Texture and pH by depth

Typical Bernardston soil profile by depth 0 in 10 in 20 in 30 in 40 in 50 in 0–8 in · H1 · pH 5.3 · 12% clay Gravelly silt loam 8–30 in · H2 · pH 5.3 · 12% clay Gravelly loam 30–60 in · H3 · pH 5.3 · 12% clay Gravelly loam
Depth to scale. More strongly shaded layers hold more clay. Horizon names are the soil survey's (A = topsoil, B = subsoil, C = parent material).
Show as a table
Typical Bernardston horizons (representative values)
Depth Texture pH Clay Sand Organic matter
0–8 in (H1) Gravelly silt loam 5.3 12% 32% 3.5%
8–30 in (H2) Gravelly loam 5.3 12% 45% 1%
30–60 in (H3) Gravelly loam 5.3 12% 45% 0.5%

Representative values from the most extensive Bernardston map unit (Bernardston gravelly silt loam, 15 to 25 percent slopes, survey area NY083). Other map units of this series vary within the series range.

Hands holding dark garden soil
Stock photo for illustration, not a sample of this soil series. Credit on the Sources & method page.

What this means

What Bernardston soil means for gardens, lawns and septic systems

For gardens

Typical topsoil in Bernardston soils is strongly acidic: pH 5.3. Most vegetables and lawn grasses do best around 6.0 to 7.0, so lime is often needed; blueberries, azaleas and rhododendrons like it as it is.

Loamy topsoil (loam, silt loam and similar) covers 91% of mapped Bernardston acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is gravelly silt loam (48% of mapped Bernardston acres).

97% of mapped Bernardston acres is moderately well to excessively drained, which suits most garden plants.

For lawns and yards

On 91% of mapped acres, rain soaks in slowly (hydrologic groups C and D, including dual groups that are D until drained). Expect runoff and puddles after heavy rain: core-aerate compacted lawns and keep ground sloping away from foundations.

For a septic system

For conventional septic absorption fields, NRCS rates 91% of the acres in mapped Bernardston soils very limited, 0% somewhat limited and 0% not limited (9% not rated, such as urban land, pits or water).

Where the soil is very limited (slow permeability, a high water table, flooding, shallow bedrock or steep slopes), alternative systems such as mound or sand-filter designs are common and cost more.

Only a licensed site evaluation or perc test at the actual lot decides whether a system is allowed and which design.

Generated from the mapped numbers above using fixed rules, not a site visit. See how these notes are written.

Where Bernardston soil is found

Mapped acres

Bernardston is mapped in New York, New Hampshire, Massachusetts and Connecticut.

Counties with the most mapped Bernardston soil
County Acres Share of county land
Washington County, NY 73,255 13.7%
Rensselaer County, NY 56,397 13.5%
Cheshire County, NH 17,034 3.8%
Dutchess County, NY 14,136 2.8%
Columbia County, NY 13,729 3.4%
Grafton County, NH 13,349 1.8%
Sullivan County, NH 12,642 3.7%
Saratoga County, NY 7,396 1.4%
Middlesex County, MA 3,472 0.7%
Franklin County, MA 2,688 0.6%
Litchfield County, CT 1,701 0.3%
Hartford County, CT 6 0.0%
Fairfield County, CT 5 0.0%

Septic absorption fields

NRCS rating, share of Bernardston acres

Not limited 0%
Somewhat limited 0%
Very limited 91%
Not rated 9%
Septic tank absorption field rating across mapped Bernardston acres. Scale 0 to 100% of mapped land.
Show as a table
Septic tank absorption field rating across mapped Bernardston acres.
CategoryShare of acres
Not limited0.0%
Somewhat limited0.0%
Very limited90.9%
Not rated9.1%

Drainage, water table and flooding

Share of Bernardston acres

Depth to seasonal high water table
About 1.7 feet (20 in) (median where reported); within 18 inches on 6% of acres.
Flooding
Not mapped as flooding on most acres.
Slope
Typically 6–30% (median 12%).
Topsoil organic matter
Median 3.5%.

Drainage class

Excessively drained 0%
Somewhat excessively drained 0%
Well drained 97%
Moderately well drained 0%
Somewhat poorly drained 0%
Poorly drained 0%
Very poorly drained 0%
Not rated 3%
Drainage class across mapped Bernardston acres. Scale 0 to 100% of mapped land.
Show as a table
Drainage class across mapped Bernardston acres.
CategoryShare of acres
Excessively drained0.0%
Somewhat excessively drained0.0%
Well drained96.9%
Moderately well drained0.0%
Somewhat poorly drained0.0%
Poorly drained0.0%
Very poorly drained0.0%
Not rated3.1%

Hydrologic soil group

A: fast infiltration (mostly sandy or gravelly) 0%
B: moderate infiltration 0%
C: slow infiltration 39%
D: very slow infiltration (clayey, shallow or wet) 12%
A/D: D as is, A if drained 0%
B/D: D as is, B if drained 0%
C/D: D as is, C if drained 40%
Not rated 9%
Hydrologic soil group across mapped Bernardston acres. Scale 0 to 100% of mapped land.
Show as a table
Hydrologic soil group across mapped Bernardston acres.
CategoryShare of acres
A: fast infiltration (mostly sandy or gravelly)0.0%
B: moderate infiltration0.0%
C: slow infiltration38.8%
D: very slow infiltration (clayey, shallow or wet)12.3%
A/D: D as is, A if drained0.0%
B/D: D as is, B if drained0.0%
C/D: D as is, C if drained39.8%
Not rated9.1%

Sources & data dates

Source
USDA NRCS Soil Survey Geographic Database (SSURGO), queried through Soil Data Access. Public domain.
Data date
SSURGO as published on November 3, 2026 (most recent survey area update October 26, 2026). NRCS refreshes SSURGO each October.
Scope
All map unit components named Bernardston (component kind "Series") in SSURGO: 215,810 acres.
Method
Shares are by mapped acres of Bernardston components. The profile comes from the single largest Bernardston component. Full methodology.

Independent reference site. No government affiliation or endorsement.

Full narrative description: USDA Official Soil Series Description for Bernardston.