Soil series profile

Peavine soil series

Peavine is a well drained soil with a silty clay loam surface, mapped on 214,529 acres in 7 counties in OR. Hydrologic group C.

#1660 by mapped area fine Typic Haplohumults (Ultisols)

Drainage class: Well drained
Hydrologic group: C
Typical topsoil pH: 5.6
Mapped area: 215k

Typical Peavine profile

Texture and pH by depth

Depth to scale. More strongly shaded layers hold more clay. Horizon names are the soil survey's (A = topsoil, B = subsoil, C = parent material).

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Typical Peavine horizons (representative values)
Depth	Texture	pH	Clay	Sand	Organic matter
0–1 in (Oi)	Slightly decomposed plant material	4.5	15%	35%	75%
1–9 in (H1)	Silty clay loam	5.6	35%	17%	6%
9–39 in (H2)	Clay	5.0	53%	18%	1.75%
39–49 in (H3)	Weathered bedrock	Not reported	Not reported	Not reported	Not reported

Representative values from the most extensive Peavine map unit (Peavine silty clay loam, 30 to 60 percent slopes, survey area OR637). Other map units of this series vary within the series range.

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

What this means

What Peavine soil means for gardens, lawns and septic systems

For gardens

Typical topsoil in Peavine soils is moderately acidic: pH 5.6. Many vegetables grow well here, and some gardens benefit from a little lime. Test before adding any.

Loamy topsoil (loam, silt loam and similar) covers 100% of mapped Peavine acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is silty clay loam (96% of mapped Peavine acres).

100% of mapped Peavine acres is moderately well to excessively drained, which suits most garden plants.

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.

For a septic system

For conventional septic absorption fields, NRCS rates 100% of the acres in mapped Peavine 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 Peavine soil is found

Mapped acres

Peavine is mapped in Oregon.

Counties with the most mapped Peavine soil
County	Acres	Share of county land
Lane County, OR	160,420	10.2%
Yamhill County, OR	16,172	3.7%
Linn County, OR	12,325	1.5%
Polk County, OR	10,933	2.6%
Benton County, OR	10,219	2.7%
Douglas County, OR	3,235	0.2%
Lincoln County, OR	1,224	0.2%

Septic absorption fields

NRCS rating, share of Peavine acres

Not limited 0%

Somewhat limited 0%

Very limited 100%

Septic tank absorption field rating across mapped Peavine acres. Scale 0 to 100% of mapped land.

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Septic tank absorption field rating across mapped Peavine acres.
Category	Share of acres
Not limited	0.0%
Somewhat limited	0.0%
Very limited	100.0%

Drainage, water table and flooding

Share of Peavine acres

Depth to seasonal high water table: None reported within about 6.5 feet (median where reported).
Flooding: Not mapped as flooding on most acres.
Slope: Typically 17–45% (median 45%).
Topsoil organic matter: Median 6%.

Drainage class

Excessively drained 0%

Somewhat excessively drained 0%

Well drained 100%

Moderately well drained 0%

Somewhat poorly drained 0%

Poorly drained 0%

Very poorly drained 0%

Drainage class across mapped Peavine acres. Scale 0 to 100% of mapped land.

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Drainage class across mapped Peavine acres.
Category	Share of acres
Excessively drained	0.0%
Somewhat excessively drained	0.0%
Well drained	100.0%
Moderately well drained	0.0%
Somewhat poorly drained	0.0%
Poorly drained	0.0%
Very poorly drained	0.0%

Hydrologic soil group

A: fast infiltration (mostly sandy or gravelly) 0%

B: moderate infiltration 0%

C: slow infiltration 100%

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 0%

Hydrologic soil group across mapped Peavine acres. Scale 0 to 100% of mapped land.

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Hydrologic soil group across mapped Peavine acres.
Category	Share of acres
A: fast infiltration (mostly sandy or gravelly)	0.0%
B: moderate infiltration	0.0%
C: slow infiltration	100.0%
D: very slow infiltration (clayey, shallow or wet)	0.0%
A/D: D as is, A if drained	0.0%
B/D: D as is, B if drained	0.0%
C/D: D as is, C if drained	0.0%

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 Peavine (component kind "Series") in SSURGO: 214,529 acres.
Method: Shares are by mapped acres of Peavine components. The profile comes from the single largest Peavine component. Full methodology.

Independent reference site. No government affiliation or endorsement.

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