Soil series profile
Woodward soil series
Woodward is a well drained soil with a loam surface, mapped on 1,332,050 acres in 56 counties across 3 states. Hydrologic group C.
- Drainage class
- Well drained >99% of mapped acres
- Hydrologic group
- C 94% of mapped acres
- Typical topsoil pH
- 7.5 slightly alkaline · range 7.5–7.5
- Mapped area
- 1.3M acres in 56 counties, 3 states
Typical Woodward profile
Texture and pH by depth
Show as a table
| Depth | Texture | pH | Clay | Sand | Organic matter |
|---|---|---|---|---|---|
| 0–7 in (A) | Loam | 7.5 | 14% | 49% | 1.25% |
| 7–18 in (Bw) | Loam | 7.9 | 14% | 49% | 0.25% |
| 18–25 in (BCk) | Loam | 7.9 | 14% | 38% | 0.25% |
| 25–50 in (Cd) | Very fine sandy loam | 8.6 | 14% | 62% | 0.15% |
What this means
What Woodward soil means for gardens, lawns and septic systems
For gardens
Typical topsoil in Woodward soils is slightly alkaline: pH 7.5. Acid-loving plants such as blueberries and azaleas struggle without amended beds, and some trees and shrubs show iron chlorosis (yellow leaves with green veins).
Loamy topsoil (loam, silt loam and similar) covers 95% of mapped Woodward acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is loam (85% of mapped Woodward acres).
>99% of mapped Woodward acres is moderately well to excessively drained, which suits most garden plants.
For lawns and yards
On 94% 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 95% of the acres in mapped Woodward soils very limited, 0% somewhat limited and 0% not limited (6% 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 Woodward soil is found
Mapped acres
Woodward is mapped in Texas, Oklahoma and Kansas.
| County | Acres | Share of county land |
|---|---|---|
| Hall County, TX | 133,812 | 23.2% |
| Custer County, OK | 122,311 | 19.3% |
| Roger Mills County, OK | 95,781 | 13.1% |
| Collingsworth County, TX | 69,453 | 11.8% |
| Motley County, TX | 66,814 | 10.6% |
| Fisher County, TX | 66,311 | 11.6% |
| Dewey County, OK | 65,130 | 10.1% |
| Cottle County, TX | 61,089 | 10.6% |
| Harper County, OK | 59,381 | 9.0% |
| King County, TX | 48,641 | 8.3% |
| Woodward County, OK | 47,445 | 5.7% |
| Washita County, OK | 46,190 | 7.2% |
| Barber County, KS | 43,870 | 6.1% |
| Clark County, KS | 37,593 | 6.1% |
| Childress County, TX | 36,624 | 8.0% |
| Comanche County, KS | 35,997 | 7.1% |
| Woods County, OK | 34,168 | 4.2% |
| Dickens County, TX | 31,231 | 5.4% |
| Beckham County, OK | 28,950 | 5.0% |
| Ellis County, OK | 27,946 | 3.5% |
| Harper County, KS | 27,674 | 5.4% |
| Stonewall County, TX | 26,023 | 4.4% |
| Kent County, TX | 23,339 | 4.1% |
| Harmon County, OK | 22,662 | 6.7% |
| Nolan County, TX | 19,456 | 3.3% |
| Alfalfa County, OK | 15,447 | 2.8% |
| Armstrong County, TX | 9,991 | 1.7% |
| Caddo County, OK | 5,481 | 0.7% |
| Blaine County, OK | 5,368 | 0.9% |
| Greer County, OK | 3,275 | 0.8% |
| Texas County, OK | 2,977 | 0.2% |
| Kiowa County, KS | 1,786 | 0.4% |
| Scurry County, TX | 1,750 | 0.3% |
| Major County, OK | 1,109 | 0.2% |
| Gray County, TX | 916 | 0.2% |
| Wheeler County, TX | 888 | 0.2% |
| Kiowa County, OK | 835 | 0.1% |
| Randall County, TX | 821 | 0.1% |
| Kingman County, KS | 634 | 0.1% |
| Coke County, TX | 484 | 0.1% |
| Mitchell County, TX | 329 | 0.1% |
| Beaver County, OK | 329 | 0.0% |
| Potter County, TX | 263 | 0.0% |
| Hardeman County, TX | 256 | 0.1% |
| Briscoe County, TX | 244 | 0.0% |
| Donley County, TX | 228 | 0.0% |
| Foard County, TX | 163 | 0.0% |
| Tillman County, OK | 131 | 0.0% |
| Jackson County, OK | 131 | 0.0% |
| Runnels County, TX | 127 | 0.0% |
| Floyd County, TX | 126 | 0.0% |
| Coleman County, TX | 19 | 0.0% |
| Clay County, TX | 18 | 0.0% |
| Wichita County, TX | 16 | 0.0% |
| Wilbarger County, TX | 16 | 0.0% |
| Sumner County, KS | 2 | 0.0% |
Septic absorption fields
NRCS rating, share of Woodward acres
Show as a table
| Category | Share of acres |
|---|---|
| Not limited | 0.0% |
| Somewhat limited | 0.0% |
| Very limited | 94.5% |
| Not rated | 5.5% |
Drainage, water table and flooding
Share of Woodward 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 2–11% (median 7%).
- Topsoil organic matter
- Median 1.2%.
Drainage class
Show as a table
| Category | Share of acres |
|---|---|
| Excessively drained | 0.0% |
| Somewhat excessively drained | 0.0% |
| Well drained | 99.8% |
| Moderately well drained | 0.0% |
| Somewhat poorly drained | 0.0% |
| Poorly drained | 0.0% |
| Very poorly drained | 0.0% |
| Not rated | 0.2% |
Hydrologic soil group
Show as a table
| Category | Share of acres |
|---|---|
| A: fast infiltration (mostly sandy or gravelly) | 0.0% |
| B: moderate infiltration | 0.1% |
| C: slow infiltration | 94.4% |
| 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% |
| Not rated | 5.5% |
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 Woodward (component kind "Series") in SSURGO: 1,332,050 acres.
- Method
- Shares are by mapped acres of Woodward components. The profile comes from the single largest Woodward component. Full methodology.