Soil survey area

Humboldt County, Nevada, West Part

Survey Area NV760• Nevada
The short version

The most common soil here is Typic Udorthents, on about 8% of the land. Boton and Bucklake come next.

About 89% of the land drains well, and 11% stays wet for long stretches; groundwater comes within two feet of the surface under 12% of it.

USDA rates 91% of the land very limited for a standard septic drain field, and 75% very limited for homes with basements. That means extra cost or special design, not that it can't be done.

Worth knowing: 11% of the land floods occasionally or more, and bedrock lies within 40 inches under 52% of it.

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 Humboldt County, Nevada, West Part, each drawn five feet deep from its official USDA description, in its recorded colors.

Boton
5% of the area
Silt loam topsoil · well drained
Smooth, like flour. Fertile and holds water well.
Entisols
Bucklake
4% of the area
Very stony loam topsoil · well drained
A balanced mix that crumbles in your hand. The gardener's ideal.
Mollisols
Rocconda
4% of the area
Very channery loam topsoil · well drained
A balanced mix that crumbles in your hand. The gardener's ideal.
Aridisols
Wylo
3% of the area
Very cobbly loam topsoil · well drained
A balanced mix that crumbles in your hand. The gardener's ideal.
Mollisols
Mazuma
3% of the area
Fine sandy loam topsoil · well drained
Gritty and crumbly. Drains fast and warms early in spring.
Entisols

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 D (very slow infiltration, high 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 Humboldt County, Nevada, West Part. Search your address to find the exact soil composition, drainage, and series details at your specific location.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Wylo-Bucklake-Rock outcrop association 111K Well drainedDVery limitedVery limited
Typic Udorthents, sandy dunes-Typic Udorthents, interdunes complex 89K Somewhat poorly drainedC/DVery limitedVery limited
Typic Udorthents, 0 to 1 percent slopes 81K Somewhat poorly drainedDVery limitedVery limited
Sondoa-Isolde association 75K Well drainedCSomewhat limitedVery limited
Boton complex, occasionally flooded 70K Well drainedCSomewhat limitedVery limited
Rocconda association 56K Well drainedDVery limitedVery limited
Ninemile-Sumine-Softscrabble association 53K Well drainedDVery limitedVery limited
Rocconda-Coppereid-Soughe complex 47K Well drainedDVery limitedVery limited
Boton-Playas association 39K Well drainedCNot limitedVery limited
Grumblen-Pickup association MLRA 27 38K Well drainedDVery limitedVery limited
Bullump-Sumine-Cleavage association 37K Well drainedCVery limitedVery limited
Skedaddle-Rock outcrop-Sumya complex 34K Well drainedDVery limitedVery limited
Tumtum very cobbly loam, 4 to 15 percent slopes 32K Well drainedDVery limitedVery limited
Isolde-Ragtown association MLRA 27 32K Excessively drainedAVery limitedVery limited
Shawave-Deadyon association 31K Well drainedCNot limitedNot limited
Devada-Bucklake complex 30K Well drainedDVery limitedVery limited
Tenabo-Gwena-Fulstone association 29K Well drainedDVery limitedVery limited
Singatse-Rocconda-Badland association 29K Somewhat excessively drainedDVery limitedVery limited
Jaybee-Soughe-Hoot complex 28K Well drainedDVery limitedVery limited
Mazuma-Toulon-Isolde association 27K Excessively drainedAVery 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.

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.
Aridisols
Dry-climate soils with low organic matter. Often have caliche layers that make excavation difficult. Low shrink-swell is good for foundations.
Inceptisols
Young but developing soils found in mountains and river terraces. Variable properties — check drainage and bedrock depth.

What This Means

Building & Foundations

About 75% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.

Septic Systems

About 91% 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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