Soil series profile

Westboro soil series

Westboro is a somewhat poorly drained soil with a silt loam surface, mapped on 105,100 acres in 9 counties in OH. Hydrologic group C/D.

#3386 by mapped area fine-silty Fragiaquic Glossudalfs (Alfisols)

Drainage class
Somewhat poorly drained
100% of mapped acres
Hydrologic group
C/D
100% of mapped acres
Typical topsoil pH
5.5
strongly acidic · range 5.5–6.5
Mapped area
105k
acres in 9 counties, 1 state

Typical Westboro profile

Texture and pH by depth

Typical Westboro soil profile by depth 0 in 20 in 40 in 60 in 0–11 in · Ap · pH 5.5 · 12% clay Silt loam 11–16 in · Bt · pH 4.9 · 23% clay Silt loam 16–23 in · Bt/E · pH 5.0 · 31% clay Silty clay loam 23–36 in · Btx · pH 5.5 · 32% clay Silty clay loam 36–79 in · 2Bt · pH 6.5 · 30% clay Clay 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 Westboro horizons (representative values)
Depth Texture pH Clay Sand Organic matter
0–11 in (Ap) Silt loam 5.5 12% 24% 2.1%
11–16 in (Bt) Silt loam 4.9 23% 17% 0.3%
16–23 in (Bt/E) Silty clay loam 5.0 31% 13% 0.25%
23–36 in (Btx) Silty clay loam 5.5 32% 19% 0.25%
36–79 in (2Bt) Clay loam 6.5 30% 25% 0.25%

Representative values from the most extensive Westboro map unit (Westboro-Schaffer silt loams, 0 to 2 percent slopes, survey area OH015). 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 Westboro soil means for gardens, lawns and septic systems

For gardens

Typical topsoil in Westboro soils is strongly acidic: pH 5.5 (most land between 5.5 and 6.5). 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 100% of mapped Westboro acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is silt loam (100% of mapped Westboro acres).

100% of mapped Westboro acres is somewhat poorly to very poorly drained, so soil stays soggy for long spells after rain and in wet seasons. Raised beds, plants that tolerate wet feet, and not working the soil while wet all help.

For lawns and yards

On 100% 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.

A seasonal high water table comes within 18 inches of the surface on 100% of mapped acres, often in spring. Basements, sump pumps and lawns in low spots feel it first.

For a septic system

For conventional septic absorption fields, NRCS rates 100% of the acres in mapped Westboro soils very limited, 0% somewhat limited and 0% not limited.

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 Westboro soil is found

Mapped acres

Westboro is mapped in Ohio.

Counties with the most mapped Westboro soil
County Acres Share of county land
Clermont County, OH 29,914 10.3%
Brown County, OH 29,160 9.3%
Highland County, OH 21,013 5.9%
Clinton County, OH 11,303 4.3%
Warren County, OH 10,661 4.2%
Adams County, OH 1,447 0.4%
Ross County, OH 1,241 0.3%
Hamilton County, OH 296 0.1%
Butler County, OH 65 0.0%

Septic absorption fields

NRCS rating, share of Westboro acres

Not limited 0%
Somewhat limited 0%
Very limited 100%
Septic tank absorption field rating across mapped Westboro acres. Scale 0 to 100% of mapped land.
Show as a table
Septic tank absorption field rating across mapped Westboro acres.
CategoryShare of acres
Not limited0.0%
Somewhat limited0.0%
Very limited100.0%

Drainage, water table and flooding

Share of Westboro acres

Depth to seasonal high water table
About 1.0 feet (12 in) (median where reported); within 18 inches on 100% of acres.
Flooding
Not mapped as flooding on most acres.
Slope
Typically 1–2% (median 1%).
Topsoil organic matter
Median 2.1%.

Drainage class

Excessively drained 0%
Somewhat excessively drained 0%
Well drained 0%
Moderately well drained 0%
Somewhat poorly drained 100%
Poorly drained 0%
Very poorly drained 0%
Drainage class across mapped Westboro acres. Scale 0 to 100% of mapped land.
Show as a table
Drainage class across mapped Westboro acres.
CategoryShare of acres
Excessively drained0.0%
Somewhat excessively drained0.0%
Well drained0.0%
Moderately well drained0.0%
Somewhat poorly drained100.0%
Poorly drained0.0%
Very poorly drained0.0%

Hydrologic soil group

A: fast infiltration (mostly sandy or gravelly) 0%
B: moderate infiltration 0%
C: slow infiltration 0%
D: very slow infiltration (clayey, shallow or wet) 0%
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 100%
Hydrologic soil group across mapped Westboro acres. Scale 0 to 100% of mapped land.
Show as a table
Hydrologic soil group across mapped Westboro acres.
CategoryShare of acres
A: fast infiltration (mostly sandy or gravelly)0.0%
B: moderate infiltration0.0%
C: slow infiltration0.0%
D: very slow infiltration (clayey, shallow or wet)0.0%
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 drained100.0%

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 Westboro (component kind "Series") in SSURGO: 105,100 acres.
Method
Shares are by mapped acres of Westboro components. The profile comes from the single largest Westboro component. Full methodology.

Independent reference site. No government affiliation or endorsement.

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