Soil survey area

Bangor Naval Station, Washington

Survey Area WA778• Washington
The short version

The most common soil here is Alderwood, on about 56% of the land: a gravelly sandy loam, gritty and crumbly. Indianola and Kitsap come next.

About under 1% of the land drains well; groundwater comes within two feet of the surface under 10% of it.

USDA rates all of the land very limited for a standard septic drain field, and all very limited for homes with basements. That means extra cost or special design, not that it can't be done.

Soils change over short distances, so look up an address below for the soil at that exact spot and the reasons behind each rating.

The ground underfoot

The soils you're most likely standing on

The biggest named soils in Bangor Naval Station, Washington, each drawn five feet deep from its official USDA description, in its recorded colors.

Alderwood
56% of the area
Gravelly sandy loam topsoil · moderately well drained
Gritty and crumbly. Drains fast and warms early in spring.
Inceptisols
Indianola
17% of the area
Loamy sand topsoil · somewhat excessively drained
Gritty and loose. Water runs straight through it.
Entisols
Kitsap
8% of the area
Silt loam topsoil · somewhat poorly drained
Smooth, like flour. Fertile and holds water well.
Inceptisols
McKenna
6% of the area
Gravelly loam topsoil · poorly drained
A balanced mix that crumbles in your hand. The gardener's ideal.
Inceptisols
Kapowsin
4% of the area
Gravelly ashy loam topsoil · moderately well drained
A balanced mix that crumbles in your hand. The gardener's ideal.
Inceptisols
Poulsbo
1% of the area
Very gravelly sandy loam topsoil · moderately well drained
Gritty and crumbly. Drains fast and warms early in spring.
Inceptisols

Dots mark gravel; white flecks mark lime. Shares are by acres across the survey area, and each mapped patch usually mixes several of these soils.

The biggest mapped areas

The dominant drainage class is Moderately well drained and the dominant hydrologic group is A (high infiltration, low runoff). The most common soil order is Inceptisols — young soils with minimal horizon development but more than Entisols. This report summarizes the major soil map units across the survey area to help you understand what to expect when buying, building, or gardening in Bangor Naval Station, Washington. Search your address to find the exact soil composition, drainage, and series details at your specific location.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Alderwood-Indianola complex, 15 to 35 percent slopes 3K Moderately well drainedAVery limitedVery limited
Alderwood-Indianola complex, 0 to 15 percent slopes 3K Moderately well drainedAVery limitedVery limited
Alderwood-Kitsap complex, 12 to 60 percent slopes 678 Moderately well drainedAVery limitedVery limited
Poulsbo-Ragnar complex, 15 to 35 percent slopes 123 Moderately well drainedDVery limitedVery limited
Poulsbo-Ragnar complex, 0 to 15 percent slopes 66 Moderately well drainedDVery limitedVery limited
Xerorthents-Endoaquents, tidal association, 0 to 100 percent slopes 36 Excessively drainedAVery limitedVery limited
Mckenna-Mukilteo complex, 0 to 5 percent slopes 30 Poorly drainedC/DVery limitedVery limited
Water, fresh 22 Not ratedNot rated
Poulsbo-Ragnar-Urban Land complex, 15 to 35 percent slopes 16 Moderately well drainedDVery limitedVery limited
Poulsbo-Ragnar-Urban Land complex, 0 to 15 percent slopes 6 Moderately well drainedDVery limitedVery limited

Soil Orders in This Area

The USDA classifies every soil into one of 12 soil orders. Here are the dominant orders found in this survey area.

Inceptisols
Young but developing soils found in mountains and river terraces. Variable properties — check drainage and bedrock depth.
Entisols
Young soils with little development — found on floodplains, dunes, and steep slopes. Properties vary widely by setting.
Histosols
Organic peat and muck soils formed in wetlands. Very poor for building (compressible) and septic. Often in regulated wetlands.

What This Means

Building & Foundations

About 100% of soils are rated "very limited" for dwellings with basements. Specific challenges include steep slopes, poor drainage in some areas. A geotechnical assessment is recommended before building.

Septic Systems

About 100% of soils are rated "very limited" for septic absorption fields. Despite good drainage overall, limitations may stem from shallow bedrock, steep slopes, or seasonal conditions. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.

Gardening & Agriculture

Well-drained soils on sloped terrain — good for most plants but watch for erosion. Terracing, contour planting, and mulching help retain moisture and topsoil. Drip irrigation is more effective than sprinklers on slopes.

Look Up a Specific Address

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