Humphreys County, Mississippi

Survey Area MS053• Mississippi

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 Alfisols — moderately leached forest soils with a clay-enriched subsoil. 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 Humphreys County, Mississippi. Search your address to find the exact soil composition, drainage, and series details at your specific location.

Soil Map Unit	Acres	Drainage	Hydro Group	Dwellings	Septic
Alligator clay, 0.5 to 2 percent slopes, occasionally flooded	64K	Poorly drained	D	Very limited	Very limited
Forestdale silt loam, 0 to 2 percent slopes	30K	Poorly drained	D	Very limited	Very limited
Forestdale silty clay loam, 0.5 to 2 percent slopes	23K	Poorly drained	D	Very limited	Very limited
Dowling clay (alligator)	22K	Very poorly drained	D	Very limited	Very limited
Alligator, Dowling, and Forestdale soils, frequently flooded (alligator, alligator, forestdale)	19K	Poorly drained	D	Very limited	Very limited
Alligator clay, 0 to 0.5 percent slopes, occasionally flooded	15K	Poorly drained	D	Very limited	Very limited
Alligator-Dowling clays, frequently flooded (alligator, alligator)	11K	Poorly drained	D	Very limited	Very limited
Alligator silty clay loam, 0 to 2 percent slopes, rarely flooded	9K	Poorly drained	D	Very limited	Very limited
Dowling soils (alligator)	8K	Very poorly drained	D	Very limited	Very limited
Water	7K			Not rated	Not rated
Forestdale-Brittain silt loams (forestdale, amagon)	6K	Poorly drained	D	Very limited	Very limited
Dowling clay, frequently flooded (alligator)	6K	Very poorly drained	D	Very limited	Very limited
Forestdale very fine sandy loam, 0 to 2 percent slopes	5K	Poorly drained	D	Very limited	Very limited
Forestdale silty clay, 0 to 2 percent slopes	5K	Poorly drained	D	Very limited	Very limited
Dundee silt loam, 0 to 2 percent slopes, rarely flooded	5K	Somewhat poorly drained	C	Very limited	Very limited
Alligator clay, 0.5 to 2 percent slopes, frequently flooded	5K	Poorly drained	D	Very limited	Very limited
Dundee very fine sandy loam	5K	Somewhat poorly drained	C	Very limited	Very limited
Marsh	4K			Not rated	Not rated
Dundee silt loam, 2 to 5 percent slopes, moderately eroded, rarely flooded	3K	Somewhat poorly drained	C	Very limited	Very limited
Forestdale silty clay loam, 0.5 to 2 percent slopes, frequently flooded	3K	Poorly drained	D	Very limited	Very 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.

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 95% 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 95% 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.