Soil survey area

Tulare County, Western Part, California

Survey Area CA659• California
The short version

The most common soil here is Colpien, on about 10% of the land: a loam, a balanced mix that crumbles in your hand. Nord and Exeter come next.

About 43% of the land drains well, and 18% stays wet for long stretches.

USDA rates 72% of the land very limited for a standard septic drain field, and 99% 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 Tulare County, Western Part, California, each drawn five feet deep from its official USDA description, in its recorded colors.

Colpien
10% of the area
Loam topsoil · moderately well drained
A balanced mix that crumbles in your hand. The gardener's ideal.
Mollisols
Nord
10% of the area
Fine sandy loam topsoil · well drained
Gritty and crumbly. Drains fast and warms early in spring.
Mollisols
Exeter
8% of the area
Loam topsoil · moderately well drained
A balanced mix that crumbles in your hand. The gardener's ideal.
Alfisols
Akers
6% of the area
Fine sandy loam topsoil · well drained
Gritty and crumbly. Drains fast and warms early in spring.
Inceptisols
Hanford
6% of the area
Fine sandy loam topsoil · well drained
Gritty and crumbly. Drains fast and warms early in spring.
Entisols
Flamen
5% of the area
Loam topsoil · moderately well drained
A balanced mix that crumbles in your hand. The gardener's ideal.
Mollisols

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 Well drained and the dominant hydrologic group is C (slow infiltration, moderate runoff). The most common soil order is Mollisols — grassland soils with a thick, dark, fertile topsoil rich in organic matter. 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 Tulare County, Western Part, California. Search your address to find the exact soil composition, drainage, and series details at your specific location.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Nord fine sandy loam, 0 to 2 percent slopes 88K Well drainedBVery limitedSomewhat limited
Colpien loam, 0 to 2 percent slopes 85K Moderately well drainedCVery limitedVery limited
Exeter loam, 0 to 2 percent slopes 66K Moderately well drainedCVery limitedVery limited
Akers-Akers, saline-Sodic, complex, 0 to 2 percent slopes 58K Well drainedBVery limitedSomewhat limited
Hanford sandy loam, 0 to 2 percent slopes 51K Well drainedAVery limitedVery limited
Flamen loam, 0 to 2 percent slopes 41K Moderately well drainedBVery limitedSomewhat limited
Calgro-Calgro, saline-Sodic, complex, 0 to 2 percent slopes 37K Moderately well drainedCVery limitedVery limited
Crosscreek-Kai association, 0 to 2 percent slopes 36K Well drainedCVery limitedVery limited
Tagus loam, 0 to 2 percent slopes 35K Well drainedBVery limitedVery limited
Quonal-Lewis association, 0 to 2 percent slopes 24K Moderately well drainedDVery limitedVery limited
Gareck-Garces association, 0 to 2 percent slopes 24K Well drainedCVery limitedVery limited
Nahrub silt loam, overwashed, 0 to 1 percent slopes 24K Somewhat poorly drainedDVery limitedVery limited
Grangeville sandy loam, drained, 0 to 2 percent slopes 23K Somewhat poorly drainedAVery limitedVery limited
Gambogy-Biggriz, saline-Sodic, association, drained, 0 to 2 percent slopes 21K Poorly drainedCVery limitedVery limited
Gambogy loam, drained, 0 to 1 percent slopes 21K Poorly drainedCVery limitedVery limited
Biggriz-Biggriz, saline-Sodic, complex, 0 to 2 percent slopes 17K Somewhat poorly drainedCVery limitedVery limited
San Joaquin loam, 0 to 2 percent slopes 15K Moderately well drainedDVery limitedVery limited
Yettem sandy loam, 0 to 2 percent slopes 13K Well drainedAVery limitedVery limited
Atesh-Jerryslu association, 0 to 2 percent slopes 10K Moderately well drainedBVery limitedSomewhat limited
Kimberlina fine sandy loam, 0 to 2 percent slopes MLRA 17 8K Well drainedAVery limitedSomewhat 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.

Mollisols
Fertile grassland soils with thick, dark topsoil. Among the best for agriculture, building, and gardening.
Entisols
Young soils with little development — found on floodplains, dunes, and steep slopes. Properties vary widely by setting.
Vertisols
High-clay soils that shrink and swell dramatically. Fertile but challenging for foundations and septic systems.
Alfisols
Moderately weathered forest soils with clay-enriched subsoil. Productive for agriculture, generally good for building and septic.
Inceptisols
Young but developing soils found in mountains and river terraces. Variable properties — check drainage and bedrock depth.

What This Means

Building & Foundations

About 99% of soils are rated "very limited" for dwellings with basements. Specific challenges include poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.

Septic Systems

About 72% 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

Drainage is generally favorable for gardening. Adding compost and mulch will improve fertility and water retention. Test your soil's pH before planting — most vegetables prefer 6.0-7.0.

Look Up a Specific Address

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