Soil survey area

Pemiscot County, Missouri

Survey Area MO155• Missouri
The short version

The most common soil here is Sharkey, on about 31% of the land: a clay, sticky when wet and rock-hard when dry. Commerce and Dundee come next.

About 4% of the land drains well, and 84% stays wet for long stretches; groundwater comes within two feet of the surface under 86% of it.

USDA rates 93% of the land very limited for a standard septic drain field, and 93% very limited for homes with basements. That means extra cost or special design, not that it can't be done.

Worth knowing: 39% of the land floods occasionally or more.

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 Pemiscot County, Missouri, each drawn five feet deep from its official USDA description, in its recorded colors.

Sharkey
31% of the area
Clay topsoil · poorly drained
Sticky when wet and rock-hard when dry. Drains slowly.
Vertisols
Commerce
16% of the area
Silt loam topsoil · somewhat poorly drained
Smooth, like flour. Fertile and holds water well.
Inceptisols
Dundee
9% of the area
Loam topsoil · somewhat poorly drained
A balanced mix that crumbles in your hand. The gardener's ideal.
Alfisols
Hayti
9% of the area
Silty clay loam topsoil · poorly drained
Smooth and slightly sticky. Holds a lot of water.
Entisols
Crevasse
5% of the area
Sand topsoil · excessively drained
Loose sand that holds almost no water.
Entisols
Portageville
4% of the area
Clay topsoil · poorly drained
Sticky when wet and rock-hard when dry. Drains slowly.
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 Poorly drained and the dominant hydrologic group is D (very slow infiltration, high runoff). The most common soil order is Entisols — young soils with little profile development, often on floodplains or steep slopes. 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 Pemiscot County, Missouri. Search your address to find the exact soil composition, drainage, and series details at your specific location.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Sharkey silty clay, 0 to 1 percent slopes, occasionally flooded 82K Poorly drainedDVery limitedVery limited
Commerce silt loam, 0 to 1 percent slopes, rarely flooded 34K Somewhat poorly drainedC/DVery limitedVery limited
Hayti silty clay loam, 0 to 1 percent slopes, rarely flooded 25K Poorly drainedC/DVery limitedVery limited
Dundee silt loam, 0 to 1 percent slopes, rarely flooded 16K Somewhat poorly drainedC/DVery limitedVery limited
Sharkey clay, 0 to 1 percent slopes, rarely flooded, north 15K Poorly drainedDVery limitedVery limited
Dundee silty clay loam, 0 to 1 percent slopes, rarely flooded 15K Somewhat poorly drainedC/DVery limitedVery limited
Water 13K SubaqueousNot ratedNot rated
Sharkey silty clay loam, 0 to 1 percent slopes, rarely flooded 12K Poorly drainedDVery limitedVery limited
Commerce silty clay loam, 0 to 1 percent slopes, frequently flooded 12K Somewhat poorly drainedC/DVery limitedVery limited
Cooter-Crevasse complex, 0 to 1 percent slopes, occasionally flooded 11K Moderately well drainedDVery limitedVery limited
Commerce silt loam, 0 to 1 percent slopes, frequently flooded 9K Somewhat poorly drainedC/DVery limitedVery limited
Levees-Borrow pits complex, 0 to 25 percent slopes 9K Somewhat poorly drainedNot ratedNot rated
Portageville clay, 0 to 1 percent slopes, rarely flooded 9K Poorly drainedDVery limitedVery limited
Commerce silty clay loam, 0 to 1 percent slopes, rarely flooded 7K Somewhat poorly drainedC/DVery limitedVery limited
Steele sandy loam, 0 to 1 percent slopes, rarely flooded 5K Moderately well drainedDVery limitedVery limited
Crevasse loamy sand, 0 to 1 percent slopes, rarely flooded 5K Excessively drainedAVery limitedVery limited
Caruthersville very fine sandy loam, 0 to 1 percent slopes, occasionally flooded 4K Moderately well drainedCVery limitedVery limited
Wardell loam, 0 to 1 percent slopes, rarely flooded 4K Poorly drainedB/DVery limitedVery limited
Hayti silty clay loam, 0 to 1 percent slopes, frequently flooded 4K Poorly drainedC/DVery limitedVery limited
Portageville silty clay loam, 0 to 1 percent slopes, rarely flooded 4K Poorly 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.

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

What This Means

Building & Foundations

About 93% 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 93% of soils are rated "very limited" for septic absorption fields. Poorly drained soils can't absorb septic effluent effectively. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.

Gardening & Agriculture

Many soils hold water for extended periods. Raised beds are highly recommended to improve drainage for vegetables. Well-adapted native plants and water-loving species will do best in natural conditions.

Look Up a Specific Address

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