County soil summary
Soil types in Wichita County, Texas
The most widespread soils are Kamay, Tillman and Deandale; the most common drainage class is well drained (84% of the land), and typical topsoil pH is 7.0.
- Well or moderately well drained
- 94% of land · state 88%
- Typical topsoil pH
- 7.0 neutral · state 7.5
- Septic fields very limited
- 85% of land · state 71%
- Subject to flooding
- 16% of land, any frequency · state 10%
Most common soils in Wichita County
Share of mapped land
A county is a patchwork of many soils. These 8 cover 59% of the mapped land; 57 named soil series are mapped here in all.
| Soil | Share of land | Drainage | Topsoil pH |
|---|---|---|---|
| Kamay | 15.8% | Well drained | 7.0 |
| Tillman | 10.8% | Well drained | 7.0 |
| Deandale | 7.7% | Moderately well drained | 7.3 |
| Bluegrove | 6.5% | Well drained | 6.5 |
| Vernon | 5.5% | Well drained | 8.0 |
| Enterprise | 5.1% | Well drained | 7.5 |
| Knoco | 3.9% | Well drained | 8.2 |
| Winters | 3.8% | Well drained | 7.0 |
What this means
What the soils in Wichita County mean for gardens, lawns and septic systems
For your garden
Typical topsoil in Wichita County is neutral: pH 7.0 (most land between 6.5 and 8.2), the range most vegetables, flowers and lawn grasses prefer.
Loamy topsoil (loam, silt loam and similar) covers 78% of the land: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is silt loam (31% of the land).
94% of the land is moderately well to excessively drained, which suits most garden plants.
For your lawn and yard
On 70% of the land, 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 85% of the land in Wichita County very limited, 7% somewhat limited and <1% not limited (8% not rated, such as urban land, pits or water).
Statewide, 71% of the land is very limited, so Wichita County is more restrictive than typical.
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 16% of the land (13% occasional, 3% frequent).
Only a licensed site evaluation or perc test at the actual lot decides whether a system is allowed and which design.
Drainage
How long the soil stays wet
The most common drainage class is well drained (84%). 94% of the land is moderately well drained or better, compared with 88% across Texas.
Show as a table
| Category | Wichita County | Texas |
|---|---|---|
| Excessively drained | 0.4% | 1.0% |
| Somewhat excessively drained | 1.4% | 1.4% |
| Well drained | 84.1% | 69.9% |
| Moderately well drained | 8.0% | 15.8% |
| Somewhat poorly drained | 0.1% | 3.7% |
| Poorly drained | 0.1% | 2.2% |
| Very poorly drained | 0.0% | 0.5% |
| Not rated | 5.9% | 5.6% |
Septic absorption fields
NRCS rating for conventional drain fields
The rating looks at the soil from 24 to 60 inches deep: permeability, depth to a seasonal water table or bedrock, flooding and slope. “Very limited” means at least one feature is unfavorable enough that a conventional field is hard to make work.
Show as a table
| Category | Wichita County | Texas |
|---|---|---|
| Not limited | 0.4% | 1.4% |
| Somewhat limited | 7.1% | 16.7% |
| Very limited | 84.8% | 70.9% |
| Not rated | 7.7% | 11.0% |
Rain, runoff and water table
Hydrologic soil group, flooding, seasonal water table
Hydrologic soil group
How fast rain soaks in when the soil is already wet. Group A soaks in fastest, D slowest.
Show as a table
| Category | Wichita County | Texas |
|---|---|---|
| A: fast infiltration (mostly sandy or gravelly) | 8.3% | 7.2% |
| B: moderate infiltration | 14.1% | 20.0% |
| C: slow infiltration | 26.7% | 22.9% |
| D: very slow infiltration (clayey, shallow or wet) | 43.5% | 38.3% |
| A/D: D as is, A if drained | 0.0% | 0.1% |
| B/D: D as is, B if drained | 0.0% | 0.8% |
| C/D: D as is, C if drained | 0.1% | 1.8% |
| Not rated | 7.2% | 8.8% |
Flooding
Show as a table
| Category | Wichita County | Texas |
|---|---|---|
| No flooding | 80.7% | 86.1% |
| Rare or very rare | 0.2% | 2.1% |
| Occasional | 13.2% | 3.4% |
| Frequent or very frequent | 3.0% | 4.6% |
| Not reported | 2.8% | 3.7% |
Seasonal high water table
Show as a table
| Category | Wichita County | Texas |
|---|---|---|
| Within 18 inches at some time of year | 0.2% | 5.7% |
| 18 inches to 3.3 feet | 0.0% | 3.6% |
| Deeper than 3.3 feet or none reported | 99.6% | 89.0% |
| Not reported | 0.2% | 1.6% |
Topsoil pH and texture
First mineral layer of each soil
Typical topsoil pH is 7.0 (neutral); 80% of rated land falls between 6.5 and 8.2. Median topsoil organic matter is 2%.
Show as a table
| Category | Wichita County | Texas |
|---|---|---|
| Strongly acidic (below 5.5) | 0.1% | 5.2% |
| Moderately to slightly acidic (5.5–6.4) | 0.5% | 9.8% |
| Near neutral (6.5–7.3) | 55.8% | 24.9% |
| Alkaline (7.4 and up) | 31.8% | 46.8% |
| Not reported | 11.9% | 13.3% |
Texture
Show as a table
| Category | Wichita County | Texas |
|---|---|---|
| Sandy | 2.8% | 14.6% |
| Loamy (loam, silt loam and similar) | 78.0% | 56.0% |
| Clayey (40%+ clay) | 7.3% | 15.9% |
| Organic (muck or peat) | 0.0% | 0.1% |
| Not reported (rock, urban land, etc.) | 11.9% | 13.4% |
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
- Wichita County, Texas (FIPS 48485): 386,658 acres of mapped land, 5,202 acres of open water excluded. State comparisons pool all mapped land in Texas.
- Method
- Shares are by mapped land area: each map unit’s acres in the county times each soil component’s percentage. Open water is excluded. Topsoil values use the first mineral horizon of each component. Full methodology.