Soil series profile

Glencoe soil series

Glencoe is a very poorly drained soil with a clay loam surface, mapped on 611,641 acres in 56 counties across 2 states. Hydrologic group C/D.

#421 by mapped area fine-loamy Cumulic Endoaquolls (Mollisols)

Drainage class
Very poorly drained
100% of mapped acres
Hydrologic group
C/D
98% of mapped acres
Typical topsoil pH
7.0
neutral · range 7.0–7.0
Mapped area
612k
acres in 56 counties, 2 states

Typical Glencoe profile

Texture and pH by depth

Typical Glencoe soil profile by depth 0 in 20 in 40 in 60 in 0–9 in · Ap · pH 7.0 · 33% clay Clay loam 9–39 in · A · pH 7.0 · 33% clay Clay loam 39–50 in · Bg · pH 7.3 · 31% clay Clay loam 50–79 in · Cg · pH 8.0 · 28% 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 Glencoe horizons (representative values)
Depth Texture pH Clay Sand Organic matter
0–9 in (Ap) Clay loam 7.0 33% 22% 9%
9–39 in (A) Clay loam 7.0 33% 26% 6%
39–50 in (Bg) Clay loam 7.3 31% 24% 1.5%
50–79 in (Cg) Clay loam 8.0 28% 35% 0.25%

Representative values from the most extensive Glencoe map unit (Canisteo-Glencoe complex, 0 to 2 percent slopes, survey area MN091). 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 Glencoe soil means for gardens, lawns and septic systems

For gardens

Typical topsoil in Glencoe soils is neutral: pH 7.0, the range most vegetables, flowers and lawn grasses prefer.

Loamy topsoil (loam, silt loam and similar) covers 100% of mapped Glencoe acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is clay loam (97% of mapped Glencoe acres).

100% of mapped Glencoe 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 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.

A seasonal high water table comes within 18 inches of the surface on 100% 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 100% of the acres in mapped Glencoe 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.

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 Glencoe soil is found

Mapped acres

Glencoe is mapped in Minnesota and Iowa.

Counties with the most mapped Glencoe soil
County Acres Share of county land
Martin County, MN 62,097 13.7%
McLeod County, MN 42,694 13.5%
Renville County, MN 37,724 6.0%
Sibley County, MN 32,514 8.6%
Jackson County, MN 28,837 6.4%
Freeborn County, MN 26,700 5.9%
Faribault County, MN 25,282 5.5%
Lac qui Parle County, MN 23,035 4.7%
Nicollet County, MN 22,869 7.9%
Redwood County, MN 19,429 3.5%
Waseca County, MN 19,292 7.1%
Wright County, MN 18,434 4.4%
Steele County, MN 18,332 6.7%
Cottonwood County, MN 16,130 3.9%
Brown County, MN 15,636 4.0%
Watonwan County, MN 14,880 5.3%
Le Sueur County, MN 14,130 4.9%
Yellow Medicine County, MN 13,960 2.9%
Scott County, MN 13,572 6.0%
Lyon County, MN 12,643 2.8%
Blue Earth County, MN 11,605 2.4%
Kandiyohi County, MN 10,902 2.1%
Rice County, MN 10,320 3.2%
Hennepin County, MN 9,604 2.7%
Meeker County, MN 7,979 2.0%
Kossuth County, IA 7,922 1.3%
Nobles County, MN 7,427 1.6%
Carver County, MN 7,419 3.2%
Murray County, MN 5,698 1.3%
Pocahontas County, IA 5,263 1.4%
Calhoun County, IA 4,728 1.3%
Webster County, IA 4,629 1.0%
Hancock County, IA 4,051 1.1%
Wright County, IA 4,037 1.1%
Hamilton County, IA 3,828 1.0%
Humboldt County, IA 3,464 1.2%
Winnebago County, IA 3,228 1.3%
Palo Alto County, IA 3,137 0.9%
Cerro Gordo County, IA 2,287 0.6%
Emmet County, IA 2,245 0.9%
Buena Vista County, IA 2,156 0.6%
Dakota County, MN 1,657 0.5%
Franklin County, IA 1,403 0.4%
Greene County, IA 1,314 0.4%
Boone County, IA 1,231 0.3%
Worth County, IA 1,189 0.5%
Sac County, IA 890 0.2%
Dickinson County, IA 887 0.4%
Clay County, IA 830 0.2%
Story County, IA 582 0.2%
Osceola County, IA 461 0.2%
Hardin County, IA 443 0.1%
Anoka County, MN 395 0.1%
Chippewa County, MN 212 0.1%
Lincoln County, MN 26 0.0%
Carroll County, IA 0 0.0%

Septic absorption fields

NRCS rating, share of Glencoe acres

Not limited 0%
Somewhat limited 0%
Very limited 100%
Septic tank absorption field rating across mapped Glencoe acres. Scale 0 to 100% of mapped land.
Show as a table
Septic tank absorption field rating across mapped Glencoe acres.
CategoryShare of acres
Not limited0.0%
Somewhat limited0.0%
Very limited100.0%

Drainage, water table and flooding

Share of Glencoe acres

Depth to seasonal high water table
About 0 inches (median where reported); within 18 inches on 100% of acres.
Flooding
Not mapped as flooding on most acres.
Slope
Typically 0–0% (median 0%).
Topsoil organic matter
Median 9%.

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 100%
Drainage class across mapped Glencoe acres. Scale 0 to 100% of mapped land.
Show as a table
Drainage class across mapped Glencoe 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 drained100.0%

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) 0%
A/D: D as is, A if drained 0%
B/D: D as is, B if drained 2%
C/D: D as is, C if drained 98%
Hydrologic soil group across mapped Glencoe acres. Scale 0 to 100% of mapped land.
Show as a table
Hydrologic soil group across mapped Glencoe 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)0.0%
A/D: D as is, A if drained0.0%
B/D: D as is, B if drained1.8%
C/D: D as is, C if drained98.2%

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 Glencoe (component kind "Series") in SSURGO: 611,641 acres.
Method
Shares are by mapped acres of Glencoe components. The profile comes from the single largest Glencoe component. Full methodology.

Independent reference site. No government affiliation or endorsement.

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