Soil series profile

Edgerly soil series

Edgerly is a poorly drained soil with a loam surface, mapped on 138,138 acres in 9 counties in LA. Hydrologic group D.

#2667 by mapped area fine-silty Typic Argiaquolls (Mollisols)

Drainage class
Poorly drained
100% of mapped acres
Hydrologic group
D
69% of mapped acres
Typical topsoil pH
5.7
moderately acidic · range 5.7–5.7
Mapped area
138k
acres in 9 counties, 1 state

Typical Edgerly profile

Texture and pH by depth

Typical Edgerly soil profile by depth 0 in 20 in 40 in 60 in 0–7 in · Ap · pH 5.7 · 14% clay Loam 7–31 in · Bt · pH 5.9 · 22% clay Loam 31–80 in · Btg · pH 6.1 · 29% clay Clay loam
Depth to scale. More strongly shaded layers hold more clay. Horizon names are the soil survey's (A = topsoil, B = subsoil, C = parent material).
Show as a table
Typical Edgerly horizons (representative values)
Depth Texture pH Clay Sand Organic matter
0–7 in (Ap) Loam 5.7 14% 44% 2.5%
7–31 in (Bt) Loam 5.9 22% 36% 0.8%
31–80 in (Btg) Clay loam 6.1 29% 40% 0.2%

Representative values from the most extensive Edgerly map unit (Edgerly loam, 0 to 1 percent slopes, rarely flooded, survey area LA019). Other map units of this series vary within the series range.

Hands holding dark garden soil
Stock photo for illustration, not a sample of this soil series. Credit on the Sources & method page.

What this means

What Edgerly soil means for gardens, lawns and septic systems

For gardens

Typical topsoil in Edgerly soils is moderately acidic: pH 5.7. Many vegetables grow well here, and some gardens benefit from a little lime. Test before adding any.

Loamy topsoil (loam, silt loam and similar) covers 69% of mapped Edgerly acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is loam (69% of mapped Edgerly acres).

100% of mapped Edgerly acres is somewhat poorly to very poorly drained, so soil stays soggy for long spells after rain and in wet seasons. Raised beds, plants that tolerate wet feet, and not working the soil while wet all help.

For lawns and yards

On 69% of mapped acres, rain soaks in slowly (hydrologic groups C and D, including dual groups that are D until drained). Expect runoff and puddles after heavy rain: core-aerate compacted lawns and keep ground sloping away from foundations.

For a septic system

For conventional septic absorption fields, NRCS rates 69% of the acres in mapped Edgerly soils very limited, 0% somewhat limited and 0% not limited (31% not rated, such as urban land, pits or water).

Where the soil is very limited (slow permeability, a high water table, flooding, shallow bedrock or steep slopes), alternative systems such as mound or sand-filter designs are common and cost more.

Flooding is mapped on 100% of the acres (0% occasional, 0% frequent).

Only a licensed site evaluation or perc test at the actual lot decides whether a system is allowed and which design.

Generated from the mapped numbers above using fixed rules, not a site visit. See how these notes are written.

Where Edgerly soil is found

Mapped acres

Edgerly is mapped in Louisiana.

Counties with the most mapped Edgerly soil
County Acres Share of county land
Calcasieu Parish, LA 64,630 9.7%
Cameron Parish, LA 28,550 3.5%
Jefferson Davis Parish, LA 23,992 5.8%
Vermilion Parish, LA 9,317 1.3%
Acadia Parish, LA 5,976 1.4%
Allen Parish, LA 3,214 0.7%
Evangeline Parish, LA 2,161 0.5%
Lafayette Parish, LA 165 0.1%
St. Landry Parish, LA 134 0.0%

Septic absorption fields

NRCS rating, share of Edgerly acres

Not limited 0%
Somewhat limited 0%
Very limited 69%
Not rated 31%
Septic tank absorption field rating across mapped Edgerly acres. Scale 0 to 100% of mapped land.
Show as a table
Septic tank absorption field rating across mapped Edgerly acres.
CategoryShare of acres
Not limited0.0%
Somewhat limited0.0%
Very limited69.0%
Not rated31.0%

Drainage, water table and flooding

Share of Edgerly acres

Depth to seasonal high water table
About 2.0 feet (24 in) (median where reported).
Flooding
Mapped as flooding on 100% of acres (0% occasional, 0% frequent).
Slope
Typically 0–0% (median 0%).
Topsoil organic matter
Median 2.5%.

Drainage class

Excessively drained 0%
Somewhat excessively drained 0%
Well drained 0%
Moderately well drained 0%
Somewhat poorly drained 0%
Poorly drained 100%
Very poorly drained 0%
Drainage class across mapped Edgerly acres. Scale 0 to 100% of mapped land.
Show as a table
Drainage class across mapped Edgerly acres.
CategoryShare of acres
Excessively drained0.0%
Somewhat excessively drained0.0%
Well drained0.0%
Moderately well drained0.0%
Somewhat poorly drained0.0%
Poorly drained100.0%
Very poorly drained0.0%

Hydrologic soil group

A: fast infiltration (mostly sandy or gravelly) 0%
B: moderate infiltration 0%
C: slow infiltration 0%
D: very slow infiltration (clayey, shallow or wet) 69%
A/D: D as is, A if drained 0%
B/D: D as is, B if drained 0%
C/D: D as is, C if drained 0%
Not rated 31%
Hydrologic soil group across mapped Edgerly acres. Scale 0 to 100% of mapped land.
Show as a table
Hydrologic soil group across mapped Edgerly acres.
CategoryShare of acres
A: fast infiltration (mostly sandy or gravelly)0.0%
B: moderate infiltration0.0%
C: slow infiltration0.0%
D: very slow infiltration (clayey, shallow or wet)69.0%
A/D: D as is, A if drained0.0%
B/D: D as is, B if drained0.0%
C/D: D as is, C if drained0.0%
Not rated31.0%

Sources & data dates

Source
USDA NRCS Soil Survey Geographic Database (SSURGO), queried through Soil Data Access. Public domain.
Data date
SSURGO as published on November 3, 2026 (most recent survey area update October 26, 2026). NRCS refreshes SSURGO each October.
Scope
All map unit components named Edgerly (component kind "Series") in SSURGO: 138,138 acres.
Method
Shares are by mapped acres of Edgerly components. The profile comes from the single largest Edgerly component. Full methodology.

Independent reference site. No government affiliation or endorsement.

Full narrative description: USDA Official Soil Series Description for Edgerly.