Plaquemines Parish, Louisiana

Survey Area LA075• Louisiana

The dominant drainage class is Very poorly drained and the dominant hydrologic group is D (very slow infiltration, high runoff). The most common soil order is Histosols — organic soils (peat/muck) formed in wetlands. 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 Plaquemines Parish, Louisiana. 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
Water, tidal	469K			Not rated	Not rated
Balize and Larose soils	60K	Very poorly drained	B/D	Very limited	Very limited
Clovelly muck, 0 to 0.2 percent slopes, very frequently flooded	57K	Very poorly drained	C/D	Very limited	Very limited
Water	56K			Not rated	Not rated
Lafitte muck, 0 to 0.2 percent slopes, very frequently flooded	45K	Very poorly drained	A/D	Very limited	Very limited
Bellpass muck, 0 to 0.2 percent slopes, very frequently flooded	35K	Very poorly drained	D	Very limited	Very limited
Timbalier muck, 0 to 0.2 percent slopes, tidal	34K	Very poorly drained	A/D	Very limited	Very limited
Aquents, dredged, frequently flooded	24K	Very poorly drained	D	Not rated	Not rated
Scatlake muck, 0 to 0.2 percent slopes, tidal	19K	Very poorly drained	D	Very limited	Very limited
Harahan clay, 0 to 1 percent slopes	16K	Poorly drained	D	Very limited	Very limited
Gentilly muck, 0 to 0.5 percent slopes, very frequently flooded	15K	Very poorly drained	D	Very limited	Very limited
Schriever clay, 0 to 1 percent slopes, rarely flooded	14K	Poorly drained	D	Very limited	Very limited
Carville, Cancienne, and Schriever soils, frequently flooded	13K	Somewhat poorly drained	C	Very limited	Very limited
Westwego clay, 0 to 0.5 percent slopes	8K	Poorly drained	D	Very limited	Very limited
Cancienne silty clay loam, 0 to 1 percent slopes	8K	Somewhat poorly drained	C	Somewhat limited	Very limited
Rita mucky clay	7K	Poorly drained	D	Very limited	Very limited
Fausse muck, saline	4K	Very poorly drained	D	Very limited	Very limited
Allemands muck, 0 to 0.2 percent slopes, very frequently flooded	4K	Very poorly drained	A/D	Very limited	Very limited
Cancienne silt loam, 0 to 1 percent slopes	3K	Somewhat poorly drained	C	Somewhat limited	Very limited
Kenner muck, 0 to 1 percent slopes, very frequently flooded	3K	Very 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.

Histosols

Organic peat and muck soils formed in wetlands. Very poor for building (compressible) and septic. Often in regulated wetlands.

Entisols

Young soils with little development — found on floodplains, dunes, and steep slopes. Properties vary widely by setting.

Inceptisols

Young but developing soils found in mountains and river terraces. Variable properties — check drainage and bedrock depth.

Vertisols

High-clay soils that shrink and swell dramatically. Fertile but challenging for foundations and septic systems.

What This Means

Building & Foundations

About 37% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.

Septic Systems

About 38% of soils have significant septic limitations, while others are more suitable. A perc test is essential — conditions vary across the area.

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.