Soil series profile
Blanket soil series
Blanket is a well drained soil with a silt loam surface, mapped on 206,941 acres in 31 counties across 2 states. Hydrologic group C.
- Drainage class
- Well drained 100% of mapped acres
- Hydrologic group
- C 100% of mapped acres
- Typical topsoil pH
- 7.0 neutral · range 7.0–7.5
- Mapped area
- 207k acres in 31 counties, 2 states
Typical Blanket profile
Texture and pH by depth
Show as a table
| Depth | Texture | pH | Clay | Sand | Organic matter |
|---|---|---|---|---|---|
| 0–12 in (Ap) | Silt loam | 7.0 | 21% | 22% | 2% |
| 12–38 in (Bt) | Silty clay | 7.3 | 42% | 9% | 1% |
| 38–56 in (Bk) | Clay loam | 8.2 | 38% | 21% | 0.5% |
| 56–79 in (BCk) | Clay loam | 8.2 | 36% | 21% | 0.1% |
What this means
What Blanket soil means for gardens, lawns and septic systems
For gardens
Typical topsoil in Blanket soils is neutral: pH 7.0 (most land between 7.0 and 7.5), the range most vegetables, flowers and lawn grasses prefer.
Loamy topsoil (loam, silt loam and similar) covers 98% of mapped Blanket acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is silt loam (78% of mapped Blanket acres).
100% of mapped Blanket 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 94% of the acres in mapped Blanket soils very limited, 4% somewhat limited and 0% not limited (2% not rated, such as urban land, pits or water).
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 Blanket soil is found
Mapped acres
Blanket is mapped in Kansas and Texas.
| County | Acres | Share of county land |
|---|---|---|
| Sedgwick County, KS | 82,348 | 12.9% |
| Pratt County, KS | 54,850 | 11.7% |
| Kingman County, KS | 14,751 | 2.7% |
| Barber County, KS | 13,466 | 1.9% |
| Erath County, TX | 11,584 | 1.7% |
| Comanche County, TX | 9,409 | 1.6% |
| Stafford County, KS | 4,848 | 1.0% |
| Parker County, TX | 3,350 | 0.6% |
| Hood County, TX | 2,820 | 1.0% |
| McCulloch County, TX | 2,655 | 0.4% |
| Palo Pinto County, TX | 2,224 | 0.4% |
| Wise County, TX | 1,620 | 0.3% |
| Callahan County, TX | 654 | 0.1% |
| Eastland County, TX | 489 | 0.1% |
| Brown County, TX | 453 | 0.1% |
| Comanche County, KS | 356 | 0.1% |
| Somervell County, TX | 250 | 0.2% |
| Mills County, TX | 192 | 0.0% |
| Butler County, KS | 163 | 0.0% |
| Cowley County, KS | 162 | 0.0% |
| Coleman County, TX | 130 | 0.0% |
| Bosque County, TX | 54 | 0.0% |
| Lampasas County, TX | 33 | 0.0% |
| Rice County, KS | 26 | 0.0% |
| Hamilton County, TX | 16 | 0.0% |
| Kiowa County, KS | 14 | 0.0% |
| McPherson County, KS | 12 | 0.0% |
| Edwards County, KS | 8 | 0.0% |
| Tarrant County, TX | 4 | 0.0% |
| Sumner County, KS | 1 | 0.0% |
| Jack County, TX | 1 | 0.0% |
Septic absorption fields
NRCS rating, share of Blanket acres
Show as a table
| Category | Share of acres |
|---|---|
| Not limited | 0.0% |
| Somewhat limited | 4.2% |
| Very limited | 94.0% |
| Not rated | 1.7% |
Drainage, water table and flooding
Share of Blanket acres
- Depth to seasonal high water table
- None reported within about 6.5 feet (median where reported).
- Flooding
- Not mapped as flooding on most acres.
- Slope
- Typically 1–2% (median 2%).
- Topsoil organic matter
- Median 2%.
Drainage class
Show as a table
| Category | Share of acres |
|---|---|
| Excessively drained | 0.0% |
| Somewhat excessively drained | 0.0% |
| Well drained | 100.0% |
| Moderately well drained | 0.0% |
| 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 | 100.0% |
| 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 | 0.0% |
| 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 Blanket (component kind "Series") in SSURGO: 206,941 acres.
- Method
- Shares are by mapped acres of Blanket components. The profile comes from the single largest Blanket component. Full methodology.