Soil series profile
Verdigris soil series
Verdigris is a well drained soil with a silt loam surface, mapped on 1,201,887 acres in 77 counties across 3 states. Hydrologic group B.
- Drainage class
- Well drained >99% of mapped acres
- Hydrologic group
- B 94% of mapped acres
- Typical topsoil pH
- 6.5 slightly acidic · range 6.5–6.5
- Mapped area
- 1.2M acres in 77 counties, 3 states
Typical Verdigris profile
Texture and pH by depth
Show as a table
| Depth | Texture | pH | Clay | Sand | Organic matter |
|---|---|---|---|---|---|
| 0–32 in (A) | Silt loam | 6.5 | 23% | 15% | 3% |
| 32–43 in (AC) | Silt loam | 6.5 | 26% | 15% | 1.25% |
| 43–79 in (C) | Silt loam | 6.5 | 26% | 15% | 1.25% |
What this means
What Verdigris soil means for gardens, lawns and septic systems
For gardens
Typical topsoil in Verdigris soils is slightly acidic: pH 6.5, the range most vegetables, flowers and lawn grasses prefer.
Loamy topsoil (loam, silt loam and similar) covers 100% of mapped Verdigris acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is silt loam (89% of mapped Verdigris acres).
100% of mapped Verdigris acres is moderately well to excessively drained, which suits most garden plants.
For lawns and yards
Most land is in hydrologic groups B and C, where rain soaks in at a moderate pace.
For a septic system
For conventional septic absorption fields, NRCS rates >99% of the acres in mapped Verdigris soils very limited, <1% 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 (56% occasional, 44% frequent).
Only a licensed site evaluation or perc test at the actual lot decides whether a system is allowed and which design.
Where Verdigris soil is found
Mapped acres
Verdigris is mapped in Kansas, Oklahoma and Missouri. The 60 counties with the most Verdigris acres:
| County | Acres | Share of county land |
|---|---|---|
| Butler County, KS | 82,370 | 9.0% |
| Osage County, OK | 77,309 | 5.4% |
| Okmulgee County, OK | 46,805 | 10.5% |
| Marion County, KS | 46,072 | 7.6% |
| Pontotoc County, OK | 45,269 | 9.9% |
| Hughes County, OK | 43,030 | 8.4% |
| Cowley County, KS | 42,619 | 5.9% |
| Bates County, MO | 40,116 | 7.4% |
| Rogers County, OK | 35,962 | 8.4% |
| Muskogee County, OK | 35,590 | 6.9% |
| Osage County, KS | 35,333 | 7.9% |
| Craig County, OK | 34,845 | 7.2% |
| Franklin County, KS | 33,905 | 9.2% |
| Washington County, OK | 33,548 | 12.7% |
| Coffey County, KS | 33,507 | 8.3% |
| Henry County, MO | 31,634 | 7.1% |
| Pittsburg County, OK | 28,075 | 3.3% |
| Montgomery County, KS | 27,026 | 6.6% |
| Wilson County, KS | 26,628 | 7.3% |
| Neosho County, KS | 26,049 | 7.1% |
| Allen County, KS | 25,774 | 8.0% |
| Cass County, MO | 24,140 | 5.4% |
| Anderson County, KS | 23,295 | 6.3% |
| Woodson County, KS | 23,050 | 7.2% |
| Linn County, KS | 22,299 | 5.9% |
| McIntosh County, OK | 21,637 | 5.5% |
| Labette County, KS | 21,328 | 5.1% |
| Bryan County, OK | 20,340 | 3.5% |
| Jasper County, MO | 20,267 | 5.0% |
| Miami County, KS | 20,072 | 5.4% |
| Bourbon County, KS | 20,028 | 4.9% |
| Okfuskee County, OK | 16,432 | 4.1% |
| Mayes County, OK | 15,941 | 3.8% |
| Vernon County, MO | 13,646 | 2.6% |
| St. Clair County, MO | 12,681 | 2.9% |
| Johnston County, OK | 12,681 | 3.1% |
| Elk County, KS | 10,949 | 2.6% |
| Chautauqua County, KS | 10,837 | 2.6% |
| Ottawa County, OK | 10,122 | 3.4% |
| Barton County, MO | 5,655 | 1.5% |
| Benton County, MO | 5,562 | 1.2% |
| Cherokee County, KS | 5,451 | 1.5% |
| Lyon County, KS | 4,341 | 0.8% |
| Crawford County, KS | 3,826 | 1.0% |
| Creek County, OK | 3,793 | 0.6% |
| Delaware County, OK | 3,416 | 0.7% |
| Johnson County, KS | 3,099 | 1.0% |
| Hickory County, MO | 2,141 | 0.8% |
| Dade County, MO | 1,587 | 0.5% |
| Sumner County, KS | 1,537 | 0.2% |
| Wagoner County, OK | 1,488 | 0.4% |
| Douglas County, KS | 1,346 | 0.5% |
| Lawrence County, MO | 1,129 | 0.3% |
| Nowata County, OK | 1,096 | 0.3% |
| Tulsa County, OK | 1,033 | 0.3% |
| Cherokee County, OK | 930 | 0.2% |
| Cedar County, MO | 548 | 0.2% |
| Johnson County, MO | 456 | 0.1% |
| Chase County, KS | 407 | 0.1% |
| Greenwood County, KS | 288 | 0.0% |
Septic absorption fields
NRCS rating, share of Verdigris acres
Show as a table
| Category | Share of acres |
|---|---|
| Not limited | 0.0% |
| Somewhat limited | 0.1% |
| Very limited | 99.9% |
Drainage, water table and flooding
Share of Verdigris acres
- Depth to seasonal high water table
- About 8 inches (median where reported); within 18 inches on <1% of acres.
- Flooding
- Mapped as flooding on 100% of acres (56% occasional, 44% frequent).
- Slope
- Typically 0–1% (median 1%).
- Topsoil organic matter
- Median 3%.
Drainage class
Show as a table
| Category | Share of acres |
|---|---|
| Excessively drained | 0.0% |
| Somewhat excessively drained | 0.0% |
| Well drained | 99.9% |
| Moderately well drained | 0.1% |
| 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 | 94.2% |
| C: slow infiltration | 5.7% |
| 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 | 0.1% |
| 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 Verdigris (component kind "Series") in SSURGO: 1,201,887 acres.
- Method
- Shares are by mapped acres of Verdigris components. The profile comes from the single largest Verdigris component. Full methodology.