Soil series profile

Keeno soil series

Keeno is a moderately well drained soil with a gravelly silt loam surface, mapped on 87,992 acres in 14 counties in MO. Hydrologic group D.

#3888 by mapped area loamy-skeletal Oxyaquic Fragiudalfs (Alfisols)

Drainage class
Moderately well drained
100% of mapped acres
Hydrologic group
D
74% of mapped acres
Typical topsoil pH
7.1
neutral · range 5.9–7.1
Mapped area
88k
acres in 14 counties, 1 state

Typical Keeno profile

Texture and pH by depth

Typical Keeno soil profile by depth 0 in 20 in 40 in 60 in 0–6 in · A · pH 7.1 · 22% clay Gravelly silt loam 6–19 in · Bt1 · pH 6.3 · 33% clay Very gravelly silty clay loam 19–29 in · 2Btx · pH 5.5 · 20% clay Extremely gravelly silt loam 29–79 in · 3Bt2 · pH 5.4 · 51% clay Extremely gravelly clay
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 Keeno horizons (representative values)
Depth Texture pH Clay Sand Organic matter
0–6 in (A) Gravelly silt loam 7.1 22% 15% 3.5%
6–19 in (Bt1) Very gravelly silty clay loam 6.3 33% 9% 2.3%
19–29 in (2Btx) Extremely gravelly silt loam 5.5 20% 22% 0.3%
29–79 in (3Bt2) Extremely gravelly clay 5.4 51% 13% 0.3%

Representative values from the most extensive Keeno map unit (Keeno gravelly silt loam, 3 to 8 percent slopes, survey area MO109). 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 Keeno soil means for gardens, lawns and septic systems

For gardens

Typical topsoil in Keeno soils is neutral: pH 7.1 (most land between 5.9 and 7.1), the range most vegetables, flowers and lawn grasses prefer.

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

100% of mapped Keeno 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.

A seasonal high water table comes within 18 inches of the surface on 74% 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 Keeno 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 Keeno soil is found

Mapped acres

Keeno is mapped in Missouri.

Counties with the most mapped Keeno soil
County Acres Share of county land
Lawrence County, MO 28,802 7.3%
Greene County, MO 27,933 6.5%
Newton County, MO 19,085 4.8%
Barton County, MO 3,016 0.8%
Dallas County, MO 2,844 0.8%
Dade County, MO 2,321 0.7%
Jasper County, MO 2,058 0.5%
Barry County, MO 800 0.2%
Polk County, MO 601 0.1%
Cedar County, MO 306 0.1%
Laclede County, MO 89 0.0%
Christian County, MO 68 0.0%
McDonald County, MO 47 0.0%
Hickory County, MO 21 0.0%

Septic absorption fields

NRCS rating, share of Keeno acres

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

Drainage, water table and flooding

Share of Keeno acres

Depth to seasonal high water table
About 1.3 feet (16 in) (median where reported); within 18 inches on 74% of acres.
Flooding
Not mapped as flooding on most acres.
Slope
Typically 4–6% (median 6%).
Topsoil organic matter
Median 3.5%.

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

Hydrologic soil group

A: fast infiltration (mostly sandy or gravelly) 0%
B: moderate infiltration 0%
C: slow infiltration 26%
D: very slow infiltration (clayey, shallow or wet) 74%
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%
Hydrologic soil group across mapped Keeno acres. Scale 0 to 100% of mapped land.
Show as a table
Hydrologic soil group across mapped Keeno acres.
CategoryShare of acres
A: fast infiltration (mostly sandy or gravelly)0.0%
B: moderate infiltration0.0%
C: slow infiltration26.2%
D: very slow infiltration (clayey, shallow or wet)73.8%
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%

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 Keeno (component kind "Series") in SSURGO: 87,992 acres.
Method
Shares are by mapped acres of Keeno components. The profile comes from the single largest Keeno component. Full methodology.

Independent reference site. No government affiliation or endorsement.

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