Soil series profile
Laurelwood soil series
Laurelwood is a well drained soil with a silt loam surface, mapped on 40,295 acres in 3 counties in OR. Hydrologic group B.
- Drainage class
- Well drained 100% of mapped acres
- Hydrologic group
- B 100% of mapped acres
- Typical topsoil pH
- 5.8 moderately acidic · range 5.7–5.8
- Mapped area
- 40k acres in 3 counties, 1 state
Typical Laurelwood profile
Texture and pH by depth
Show as a table
| Depth | Texture | pH | Clay | Sand | Organic matter |
|---|---|---|---|---|---|
| 0–11 in (H1) | Silt loam | 5.8 | 19% | 12% | 3% |
| 11–52 in (H2) | Silty clay loam | 5.3 | 29% | 7% | 1.25% |
| 52–72 in (H3) | Silty clay | 5.3 | 45% | 7% | 0.25% |
What this means
What Laurelwood soil means for gardens, lawns and septic systems
For gardens
Typical topsoil in Laurelwood soils is moderately acidic: pH 5.8 (most land between 5.7 and 5.8). 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 Laurelwood acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is silt loam (100% of mapped Laurelwood acres).
100% of mapped Laurelwood acres is moderately well to excessively drained, which suits most garden plants.
For lawns and yards
Most land is in hydrologic groups B and C, where rain soaks in at a moderate pace.
For a septic system
For conventional septic absorption fields, NRCS rates 94% of the acres in mapped Laurelwood soils very limited, 6% 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.
Where Laurelwood soil is found
Mapped acres
Laurelwood is mapped in Oregon.
| County | Acres | Share of county land |
|---|---|---|
| Washington County, OR | 31,686 | 8.0% |
| Yamhill County, OR | 6,505 | 1.5% |
| Clackamas County, OR | 2,104 | 0.4% |
Septic absorption fields
NRCS rating, share of Laurelwood acres
Show as a table
| Category | Share of acres |
|---|---|
| Not limited | 0.0% |
| Somewhat limited | 6.4% |
| Very limited | 93.6% |
Drainage, water table and flooding
Share of Laurelwood 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 5–45% (median 16%).
- Topsoil organic matter
- Median 3%.
Drainage class
Show as a table
| 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
Show as a table
| Category | Share of acres |
|---|---|
| A: fast infiltration (mostly sandy or gravelly) | 0.0% |
| B: moderate infiltration | 100.0% |
| C: slow infiltration | 0.0% |
| 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 Laurelwood (component kind "Series") in SSURGO: 40,295 acres.
- Method
- Shares are by mapped acres of Laurelwood components. The profile comes from the single largest Laurelwood component. Full methodology.