Soil series profile

Riedtown soil series

Riedtown is a moderately well drained soil with a silt loam surface, mapped on 92,563 acres in 3 counties in MS. Hydrologic group B/D.

#3752 by mapped area coarse-silty Fluvaquentic Eutrudepts (Inceptisols)

Drainage class: Moderately well drained
Hydrologic group: B/D
Typical topsoil pH: 6.2
Mapped area: 93k

Typical Riedtown profile

Texture and pH by depth

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 Riedtown horizons (representative values)
Depth	Texture	pH	Clay	Sand	Organic matter
0–7 in (Ap)	Silt loam	6.2	13%	3%	2%
7–27 in (Bw)	Silt loam	5.8	15%	2%	0.25%
27–42 in (Bb/E)	Silt loam	6.2	20%	4%	0.2%
42–80 in (Bgb)	Silt loam	6.4	21%	4%	0.25%

Representative values from the most extensive Riedtown map unit (Riedtown silt loam, 0 to 2 percent slopes, occasionally flooded, survey area MS049). Other map units of this series vary within the series range.

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

What this means

What Riedtown soil means for gardens, lawns and septic systems

For gardens

Typical topsoil in Riedtown soils is slightly acidic: pH 6.2 (most land between 6.2 and 6.5), the range most vegetables, flowers and lawn grasses prefer.

Loamy topsoil (loam, silt loam and similar) covers 100% of mapped Riedtown acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is silt loam (100% of mapped Riedtown acres).

100% of mapped Riedtown acres is moderately well to excessively drained, which suits most garden plants.

For lawns and yards

On 100% 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 100% of the acres in mapped Riedtown soils very limited, 0% somewhat limited and 0% not limited.

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 (76% 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 Riedtown soil is found

Mapped acres

Riedtown is mapped in Mississippi.

Counties with the most mapped Riedtown soil
County	Acres	Share of county land
Hinds County, MS	63,319	11.5%
Wilkinson County, MS	22,396	5.2%
Madison County, MS	6,848	1.5%

Septic absorption fields

NRCS rating, share of Riedtown acres

Not limited 0%

Somewhat limited 0%

Very limited 100%

Septic tank absorption field rating across mapped Riedtown acres. Scale 0 to 100% of mapped land.

Show as a table

Septic tank absorption field rating across mapped Riedtown acres.
Category	Share of acres
Not limited	0.0%
Somewhat limited	0.0%
Very limited	100.0%

Drainage, water table and flooding

Share of Riedtown acres

Depth to seasonal high water table: About 1.8 feet (22 in) (median where reported).
Flooding: Mapped as flooding on 100% of acres (76% occasional, 0% frequent).
Slope: Typically 1–1% (median 1%).
Topsoil organic matter: Median 2%.

Drainage class

Excessively drained 0%

Somewhat excessively drained 0%

Well drained 0%

Moderately well drained 100%

Somewhat poorly drained 0%

Poorly drained 0%

Very poorly drained 0%

Drainage class across mapped Riedtown acres. Scale 0 to 100% of mapped land.

Show as a table

Drainage class across mapped Riedtown acres.
Category	Share of acres
Excessively drained	0.0%
Somewhat excessively drained	0.0%
Well drained	0.0%
Moderately well drained	100.0%
Somewhat poorly drained	0.0%
Poorly drained	0.0%
Very poorly drained	0.0%

Hydrologic soil group

A: fast infiltration (mostly sandy or gravelly) 0%

B: moderate infiltration 0%

C: slow infiltration 31%

D: very slow infiltration (clayey, shallow or wet) 0%

A/D: D as is, A if drained 0%

B/D: D as is, B if drained 69%

C/D: D as is, C if drained 0%

Hydrologic soil group across mapped Riedtown acres. Scale 0 to 100% of mapped land.

Show as a table

Hydrologic soil group across mapped Riedtown acres.
Category	Share of acres
A: fast infiltration (mostly sandy or gravelly)	0.0%
B: moderate infiltration	0.0%
C: slow infiltration	31.1%
D: very slow infiltration (clayey, shallow or wet)	0.0%
A/D: D as is, A if drained	0.0%
B/D: D as is, B if drained	68.9%
C/D: D as is, C if drained	0.0%

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 Riedtown (component kind "Series") in SSURGO: 92,563 acres.
Method: Shares are by mapped acres of Riedtown components. The profile comes from the single largest Riedtown component. Full methodology.

Independent reference site. No government affiliation or endorsement.

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