Soil series profile

Latty soil series

Latty is a very poorly drained soil with a silty clay surface, mapped on 203,593 acres in 19 counties across 2 states. Hydrologic group D.

#1779 by mapped area fine Typic Endoaquepts (Inceptisols)

Drainage class
Very poorly drained
97% of mapped acres
Hydrologic group
D
82% of mapped acres
Typical topsoil pH
6.5
slightly acidic · range 6.5–7.0
Mapped area
204k
acres in 19 counties, 2 states

Typical Latty profile

Texture and pH by depth

Typical Latty soil profile by depth 0 in 20 in 40 in 60 in 0–7 in · Ap · pH 6.5 · 44% clay Silty clay 7–24 in · Bg · pH 7.2 · 49% clay Silty clay 24–37 in · BCg · pH 7.7 · 52% clay Silty clay 37–67 in · C1 · pH 7.9 · 45% clay Silty clay 67–80 in · 2C2 · pH 7.9 · 36% clay Silty 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 Latty horizons (representative values)
Depth Texture pH Clay Sand Organic matter
0–7 in (Ap) Silty clay 6.5 44% 15% 4.8%
7–24 in (Bg) Silty clay 7.2 49% 10% 2%
24–37 in (BCg) Silty clay 7.7 52% 3% 0.5%
37–67 in (C1) Silty clay 7.9 45% 12% 0.5%
67–80 in (2C2) Silty clay loam 7.9 36% 18% 0.5%

Representative values from the most extensive Latty map unit (Latty silty clay, till substratum, 0 to 1 percent slopes, survey area OH125). 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 Latty soil means for gardens, lawns and septic systems

For gardens

Typical topsoil in Latty soils is slightly acidic: pH 6.5 (most land between 6.5 and 7.0), the range most vegetables, flowers and lawn grasses prefer.

Clayey topsoil covers 92% of mapped Latty acres. Clay holds water and nutrients but drains slowly and compacts if worked wet: add compost, avoid tilling soggy soil and consider raised beds. The most common surface texture is silty clay (92% of mapped Latty acres).

97% of mapped Latty 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 97% 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.

A seasonal high water table comes within 18 inches of the surface on 97% of mapped acres, often in spring. Basements, sump pumps and lawns in low spots feel it first.

For a septic system

For conventional septic absorption fields, NRCS rates 97% of the acres in mapped Latty soils very limited, 0% somewhat limited and 0% not limited (3% 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.

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 Latty soil is found

Mapped acres

Latty is mapped in Ohio and Michigan.

Counties with the most mapped Latty soil
County Acres Share of county land
Paulding County, OH 60,181 22.6%
Defiance County, OH 33,219 12.6%
Putnam County, OH 22,603 7.3%
Lucas County, OH 17,950 8.2%
Fulton County, OH 9,923 3.8%
Van Wert County, OH 9,873 3.8%
Wood County, OH 9,398 2.4%
Logan County, OH 9,157 3.1%
Williams County, OH 6,955 2.6%
Wyandot County, OH 6,906 2.7%
Marion County, OH 6,885 2.7%
Ottawa County, OH 3,475 2.1%
Hardin County, OH 2,796 0.9%
Henry County, OH 2,719 1.0%
Tuscola County, MI 962 0.2%
Auglaize County, OH 363 0.1%
St. Clair County, MI 117 0.0%
Lapeer County, MI 64 0.0%
Macomb County, MI 48 0.0%

Septic absorption fields

NRCS rating, share of Latty acres

Not limited 0%
Somewhat limited 0%
Very limited 97%
Not rated 3%
Septic tank absorption field rating across mapped Latty acres. Scale 0 to 100% of mapped land.
Show as a table
Septic tank absorption field rating across mapped Latty acres.
CategoryShare of acres
Not limited0.0%
Somewhat limited0.0%
Very limited96.6%
Not rated3.4%

Drainage, water table and flooding

Share of Latty acres

Depth to seasonal high water table
About 0 inches (median where reported); within 18 inches on 97% of acres.
Flooding
Not mapped as flooding on most acres.
Slope
Typically 0–1% (median 0%).
Topsoil organic matter
Median 4.8%.

Drainage class

Excessively drained 0%
Somewhat excessively drained 0%
Well drained 0%
Moderately well drained 0%
Somewhat poorly drained 0%
Poorly drained 0%
Very poorly drained 97%
Not rated 3%
Drainage class across mapped Latty acres. Scale 0 to 100% of mapped land.
Show as a table
Drainage class across mapped Latty acres.
CategoryShare of acres
Excessively drained0.0%
Somewhat excessively drained0.0%
Well drained0.0%
Moderately well drained0.0%
Somewhat poorly drained0.0%
Poorly drained0.0%
Very poorly drained96.6%
Not rated3.4%

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) 82%
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 15%
Not rated 3%
Hydrologic soil group across mapped Latty acres. Scale 0 to 100% of mapped land.
Show as a table
Hydrologic soil group across mapped Latty 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)81.5%
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 drained15.0%
Not rated3.4%

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 Latty (component kind "Series") in SSURGO: 203,593 acres.
Method
Shares are by mapped acres of Latty components. The profile comes from the single largest Latty component. Full methodology.

Independent reference site. No government affiliation or endorsement.

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