Soil survey area

Lawrence County, Alabama

Survey Area AL079• Alabama
The short version

The most common soil here is Muskingum (Gorgas), on about 15% of the land. Wynnville and Colbert come next.

About 58% of the land drains well, and 19% stays wet for long stretches; groundwater comes within two feet of the surface under 28% of it.

USDA rates 76% of the land very limited for a standard septic drain field, and 71% very limited for homes with basements. That means extra cost or special design, not that it can't be done.

Worth knowing: 9% of the land floods occasionally or more, and bedrock lies within 40 inches under 29% 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 Lawrence County, Alabama, each drawn five feet deep from its official USDA description, in its recorded colors.

Wynnville
7% of the area
Fine sandy loam topsoil · moderately well drained
Gritty and crumbly. Drains fast and warms early in spring.
Ultisols
Colbert
6% of the area
Silt loam topsoil · moderately well drained
Smooth, like flour. Fertile and holds water well.
Alfisols
Decatur
5% of the area
Silt loam topsoil · well drained
Smooth, like flour. Fertile and holds water well.
Ultisols
Etowah
4% of the area
Silt loam topsoil · well drained
Smooth, like flour. Fertile and holds water well.
Ultisols
Barfield
4% of the area
Silty clay loam topsoil · well drained
Smooth and slightly sticky. Holds a lot of water.
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 D (very slow infiltration, high runoff). The most common soil order is Ultisols — strongly weathered soils with clay-enriched subsoils, common in warm humid climates. 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 Lawrence County, Alabama. Search your address to find the exact soil composition, drainage, and series details at your specific location.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Muskingum (Gorgas) stony fine sandy loam, 20 to 45 percent slopes, very stony 79K Well drainedDVery limitedVery limited
Wynnville fine sandy loam, 2 to 5 percent slopes, moderately eroded 23K Moderately well drainedDVery limitedVery limited
Ketona silt loam, 0 to 2 percent slopes, occasionally ponded 20K Poorly drainedC/DVery limitedVery limited
Etowah loam, 2 to 6 percent slopes, moderately eroded 18K Well drainedBNot limitedSomewhat limited
Decatur silty clay loam, 2 to 6 percent slopes, eroded 17K Well drainedBNot limitedSomewhat limited
Water 16K Not ratedNot rated
Rockland, limestone, steep 15K Well drainedDVery limitedVery limited
Wynnville fine sandy loam, 5 to 10 percent slopes, moderately eroded 14K Moderately well drainedDVery limitedVery limited
Enders loam, 5 to 12 percent slopes 14K Well drainedDSomewhat limitedVery limited
Prader silt loam 10K Poorly drainedC/DVery limitedVery limited
Colbert silty clay loam, 2 to 6 percent slopes, eroded 9K Moderately well drainedDVery limitedVery limited
Ooltewah silt loam 9K Somewhat poorly drainedB/DVery limitedVery limited
Hollywood silty clay 9K Moderately well drainedDVery limitedVery limited
Abernathy-Emory silt loams, 0 to 2 percent slopes 8K Well drainedCVery limitedVery limited
Talbott silty clay loam, eroded, undulating phase 8K Well drainedCVery limitedVery limited
Cumberland loam, 2 to 6 percent slopes, eroded 7K Well drainedBSomewhat limitedSomewhat limited
Lindside silty clay loam 7K Somewhat poorly drainedDVery limitedVery limited
Dunning silty clay 7K Poorly drainedC/DVery limitedVery limited
Cumberland loam, 2 to 6 percent slopes, eroded 7K Well drainedBSomewhat limitedSomewhat limited
Melvin silt loam 6K Poorly drainedB/DVery 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.

Ultisols
Strongly weathered clay soils of the Southeast. Acidic and naturally low in nutrients. Clay subsoil can slow drainage.
Alfisols
Moderately weathered forest soils with clay-enriched subsoil. Productive for agriculture, generally good for building and septic.
Mollisols
Fertile grassland soils with thick, dark topsoil. Among the best for agriculture, building, and gardening.
Inceptisols
Young but developing soils found in mountains and river terraces. Variable properties — check drainage and bedrock depth.

What This Means

Building & Foundations

About 71% 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 76% 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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