Soil series profile
Kenoma soil series
Kenoma is a moderately well drained soil with a silt loam surface, mapped on 1,210,904 acres in 47 counties across 3 states. Hydrologic group D.
- Drainage class
- Moderately well drained 100% of mapped acres
- Hydrologic group
- D >99% of mapped acres
- Typical topsoil pH
- 6.4 slightly acidic · range 6.4–6.4
- Mapped area
- 1.2M acres in 47 counties, 3 states
Typical Kenoma profile
Texture and pH by depth
Show as a table
| Depth | Texture | pH | Clay | Sand | Organic matter |
|---|---|---|---|---|---|
| 0–10 in (A) | Silt loam | 6.4 | 22% | 6% | 3.25% |
| 10–24 in (Bt1) | Silty clay | 6.6 | 53% | 3% | 1.5% |
| 24–41 in (Bt2) | Silty clay | 6.6 | 53% | 3% | 1.5% |
| 41–47 in (BC) | Silty clay | 7.6 | 48% | 7% | 0.4% |
| 47–69 in (C) | Silty clay | 7.6 | 47% | 6% | 0.3% |
| 69–79 in (R) | Bedrock | Not reported | Not reported | Not reported | Not reported |
What this means
What Kenoma soil means for gardens, lawns and septic systems
For gardens
Typical topsoil in Kenoma soils is slightly acidic: pH 6.4, the range most vegetables, flowers and lawn grasses prefer.
Loamy topsoil (loam, silt loam and similar) covers 100% of mapped Kenoma acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is silt loam (97% of mapped Kenoma acres).
100% of mapped Kenoma 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 Kenoma 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.
Where Kenoma soil is found
Mapped acres
Kenoma is mapped in Kansas, Missouri and Oklahoma.
| County | Acres | Share of county land |
|---|---|---|
| Bates County, MO | 170,152 | 31.6% |
| Lyon County, KS | 132,784 | 24.4% |
| Coffey County, KS | 89,548 | 22.2% |
| Osage County, KS | 74,276 | 16.6% |
| Allen County, KS | 72,794 | 22.6% |
| Cass County, MO | 71,478 | 16.0% |
| Neosho County, KS | 64,668 | 17.7% |
| Franklin County, KS | 60,405 | 16.4% |
| Anderson County, KS | 56,371 | 15.1% |
| Greenwood County, KS | 52,973 | 7.2% |
| Bourbon County, KS | 51,226 | 12.6% |
| Linn County, KS | 47,978 | 12.6% |
| Montgomery County, KS | 46,612 | 11.3% |
| Woodson County, KS | 46,567 | 14.6% |
| Labette County, KS | 40,900 | 9.9% |
| Miami County, KS | 37,618 | 10.1% |
| Wilson County, KS | 34,838 | 9.5% |
| Elk County, KS | 17,234 | 4.2% |
| St. Clair County, MO | 9,622 | 2.2% |
| Crawford County, KS | 5,241 | 1.4% |
| Chautauqua County, KS | 3,444 | 0.8% |
| Johnson County, KS | 3,394 | 1.1% |
| Craig County, OK | 2,237 | 0.5% |
| Cherokee County, KS | 2,212 | 0.6% |
| Douglas County, KS | 2,065 | 0.7% |
| Rogers County, OK | 1,812 | 0.4% |
| Nowata County, OK | 1,654 | 0.5% |
| Vernon County, MO | 1,469 | 0.3% |
| Muskogee County, OK | 1,119 | 0.2% |
| Henry County, MO | 941 | 0.2% |
| Okmulgee County, OK | 926 | 0.2% |
| Washington County, OK | 853 | 0.3% |
| Ottawa County, OK | 807 | 0.3% |
| Mayes County, OK | 789 | 0.2% |
| Wagoner County, OK | 593 | 0.2% |
| Tulsa County, OK | 552 | 0.2% |
| Pettis County, MO | 519 | 0.1% |
| Wabaunsee County, KS | 482 | 0.1% |
| Benton County, MO | 478 | 0.1% |
| Johnson County, MO | 356 | 0.1% |
| McIntosh County, OK | 330 | 0.1% |
| Cowley County, KS | 249 | 0.0% |
| Hickory County, MO | 230 | 0.1% |
| Okfuskee County, OK | 67 | 0.0% |
| Chase County, KS | 32 | 0.0% |
| Shawnee County, KS | 9 | 0.0% |
| Butler County, KS | 1 | 0.0% |
Septic absorption fields
NRCS rating, share of Kenoma acres
Show as a table
| Category | Share of acres |
|---|---|
| Not limited | 0.0% |
| Somewhat limited | 0.0% |
| Very limited | 100.0% |
Drainage, water table and flooding
Share of Kenoma acres
- Depth to seasonal high water table
- About 1.5 feet (18 in) (median where reported); within 18 inches on <1% of acres.
- Flooding
- Not mapped as flooding on most acres.
- Slope
- Typically 2–2% (median 2%).
- Topsoil organic matter
- Median 3.2%.
Drainage class
Show as a table
| 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
Show as a table
| Category | Share of acres |
|---|---|
| A: fast infiltration (mostly sandy or gravelly) | 0.0% |
| B: moderate infiltration | 0.0% |
| C: slow infiltration | 0.1% |
| D: very slow infiltration (clayey, shallow or wet) | 99.9% |
| A/D: D as is, A if drained | 0.0% |
| B/D: D as is, B if drained | 0.0% |
| 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 Kenoma (component kind "Series") in SSURGO: 1,210,904 acres.
- Method
- Shares are by mapped acres of Kenoma components. The profile comes from the single largest Kenoma component. Full methodology.