Obion County, Tennessee

Survey Area TN131 Tennessee

The dominant drainage class is Well drained and the dominant hydrologic group is B (moderate infiltration). 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 Obion County, Tennessee.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Memphis silt loam, 20 to 30 percent slopes, moderately eroded, northern phase 33K Well drainedBVery limitedVery limited
Falaya silt loam, 0 to 2 percent slopes, occasionally flooded, brief 29K Somewhat poorly drainedB/DVery limitedVery limited
Adler silt loam, 0 to 2 percent slopes, occasionally flooded 23K Moderately well drainedCVery limitedVery limited
Grenada silt loam, 2 to 5 percent slopes 21K Moderately well drainedC/DVery limitedVery limited
Grenada silt loam, 5 to 8 percent slopes, eroded 19K Moderately well drainedDVery limitedVery limited
Memphis silt loam, 30 to 50 percent slopes 17K Well drainedBVery limitedVery limited
Memphis silt loam, 2 to 5 percent slopes, northern phase 17K Well drainedBNot limitedSomewhat limited
Waverly silt loam, 0 to 2 percent slopes, frequently flooded, long 15K Poorly drainedB/DVery limitedVery limited
Calloway silt loam 14K Somewhat poorly drainedC/DVery limitedVery limited
Convent silt loam 14K Somewhat poorly drainedCSomewhat limitedVery limited
Water 11K Not ratedNot rated
Waverly silt loam, 0 to 2 percent slopes, occasionally flooded, brief 10K Poorly drainedB/DVery limitedVery limited
Loring silt loam, 8 to 12 percent slopes, eroded 10K Moderately well drainedDVery limitedVery limited
Loring silt loam, 2 to 5 percent slopes 9K Moderately well drainedCVery limitedVery limited
Routon-Bonn silt loam complex 9K Poorly drainedC/DVery limitedVery limited
Memphis silt loam, 5 to 8 percent slopes, moderately eroded, northern phase 9K Well drainedBNot limitedSomewhat limited
Memphis-Gullied land complex, 12 to 30 percent slopes 8K Well drainedBVery limitedVery limited
Routon silt loam, 0 to 2 percent slopes 7K Poorly drainedC/DVery limitedVery limited
Center silt loam, 0 to 2 percent slopes 7K Somewhat poorly drainedC/DVery limitedVery limited
Swamp (Rosebloom, ponded) 7K Poorly drainedB/DVery limitedVery limited

What This Means

Building & Foundations

About 82% of soils are rated "very limited" for dwellings with basements. Specific challenges include steep slopes, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.

Septic Systems

About 87% 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.

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