Clallam County Soil Data
Clallam County, Washington
USDA SSURGO / PHZMAvg pH
N/A
Texture
Unknown
Drainage
N/A
Organic Matter
N/A
Hydrologic Group
N/A
Data Story
About Soil in Clallam County, Washington
Coastal Soils of the Peninsula
Clallam County's coastal soils lack specific pH and taxonomic data in these recent surveys. In this rainy climate, soils are often more acidic than the national 6.5 median due to heavy nutrient leaching from rainfall.
Olympic Mountain Influence
Exact percentages for sand, silt, and clay are currently unavailable. The proximity to the Olympic Mountains suggests a mix of stony and fine materials that affect how water moves through the ground.
Lush Growth and Natural Matter
No data exists for organic matter or water capacity in the current records. Local gardeners often find they have more natural organic matter than the 2.0% national average thanks to the region's lush, year-round vegetation.
Managing High Rainfall Drainage
Official drainage and hydrologic groups are not listed for this county. Given the extremely high rainfall, ensuring your garden beds aren't waterlogged is a top priority for any planting project.
Maritime Gardening in Zone 8b
Hardiness zone 8b offers a mild maritime climate perfect for cool-season greens and berries. The long, temperate season allows you to grow a wide variety of ornamentals and vegetables with very little frost risk.
Soil Composition
Composition data not available for this county.
Soil pH
pH data not available for this county.
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Hydrologic group data not available.
Drainage Class
Drainage class data not available.
Soil Profile
Dominant texture: Unknown
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Soil Amendment Products
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Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Clallam County have?
Clallam County's soil is classified as Unknown. This indicates the relative proportions of sand, silt, and clay — sand percentage unavailable, silt percentage unavailable, and clay percentage unavailable. Sandy soils drain quickly but may need more frequent irrigation and fertilization.
Is Clallam County's soil acidic or alkaline?
pH data is not available for Clallam County.
What is the drainage class for Clallam County?
Drainage class data is not currently available for Clallam County.
What crops or plants grow well in Clallam County's soil?
Based on Clallam County's Unknown texture, soil pH, and drainage class, the soil is well suited for a variety of crops depending on local conditions.
What USDA soil order is found in Clallam County?
The dominant USDA soil order for Clallam County is not currently available in our dataset.
Soil & Planting Advisory: Clallam County
Soil Verdict
Clallam County is in USDA hardiness zone 8b, a warm climate zone. where winter lows can reach 15°F. Mild winters mean soil rarely freezes deeply, allowing year-round microbial activity and faster organic matter breakdown.
Planting Guidance
Warm-season crops, citrus relatives, and heat-loving ornamentals do well. Cool-season vegetables should be planted in fall and winter. Always match plant selections to the specific microclimate of your property — low spots, slopes, and wind exposure can shift effective hardiness by half a zone.
Soil Implications
Warm soils accelerate organic matter breakdown, so compost and mulch need replenishing more frequently than in cooler zones. Sandy soils common in warm zones drain quickly; water-retentive amendments like compost or peat help hold moisture.
Regional Context
Clallam County is somewhat warmer than the Washington statewide average. The zone range of 8b-9a within the county means soil and planting decisions should account for local elevation and topography.
Planning your lawn? View lawn care data for Clallam County on LawnByCounty.com →
Other Counties in Washington
Soil data sourced from USDA SSURGO via Soil Data Access. Data is informational only and should not be used as a substitute for on-site soil testing. Contact your local NRCS office for site-specific soil information.