Soil series profile
Aledo soil series
Aledo is a well drained soil with a gravelly clay loam surface, mapped on 299,891 acres in 26 counties across 2 states. Hydrologic group D.
- Drainage class
- Well drained 100% of mapped acres
- Hydrologic group
- D 94% of mapped acres
- Typical topsoil pH
- 7.8 slightly alkaline · range 7.8–8.2
- Mapped area
- 300k acres in 26 counties, 2 states
Typical Aledo profile
Texture and pH by depth
Show as a table
| Depth | Texture | pH | Clay | Sand | Organic matter |
|---|---|---|---|---|---|
| 0–4 in (A) | Gravelly clay loam | 7.8 | 30% | 37% | 2% |
| 4–16 in (Bk) | Extremely gravelly clay loam | 8.2 | 30% | 38% | 0.75% |
| 16–80 in (R) | Bedrock | Not reported | Not reported | Not reported | Not reported |
What this means
What Aledo soil means for gardens, lawns and septic systems
For gardens
Typical topsoil in Aledo soils is slightly alkaline: pH 7.8 (most land between 7.8 and 8.2). 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 91% of mapped Aledo acres: generally the easiest soil to garden, holding moisture without staying waterlogged. The most common surface texture is gravelly clay loam (81% of mapped Aledo acres).
100% of mapped Aledo 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 91% of the acres in mapped Aledo soils very limited, 0% somewhat limited and 0% not limited (9% 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 Aledo soil is found
Mapped acres
Aledo is mapped in Texas and Oklahoma.
| County | Acres | Share of county land |
|---|---|---|
| Parker County, TX | 50,797 | 8.8% |
| Tarrant County, TX | 41,068 | 7.4% |
| Johnson County, TX | 40,086 | 8.6% |
| McLennan County, TX | 34,085 | 5.1% |
| Hood County, TX | 27,587 | 10.1% |
| Wise County, TX | 21,104 | 3.7% |
| Cooke County, TX | 18,424 | 3.3% |
| Montague County, TX | 13,668 | 2.3% |
| Hill County, TX | 13,541 | 2.2% |
| Denton County, TX | 11,462 | 2.0% |
| Erath County, TX | 6,928 | 1.0% |
| Jack County, TX | 5,016 | 0.9% |
| Love County, OK | 4,882 | 1.5% |
| Grayson County, TX | 3,910 | 0.7% |
| Bosque County, TX | 1,406 | 0.2% |
| Comanche County, TX | 1,319 | 0.2% |
| Mills County, TX | 1,196 | 0.3% |
| Coryell County, TX | 1,037 | 0.2% |
| Somervell County, TX | 817 | 0.7% |
| Shackelford County, TX | 364 | 0.1% |
| Eastland County, TX | 304 | 0.1% |
| Hamilton County, TX | 303 | 0.1% |
| Marshall County, OK | 216 | 0.1% |
| Brown County, TX | 196 | 0.0% |
| Lampasas County, TX | 174 | 0.0% |
| Bell County, TX | 1 | 0.0% |
Septic absorption fields
NRCS rating, share of Aledo acres
Show as a table
| Category | Share of acres |
|---|---|
| Not limited | 0.0% |
| Somewhat limited | 0.0% |
| Very limited | 91.3% |
| Not rated | 8.7% |
Drainage, water table and flooding
Share of Aledo 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 5–12% (median 5%).
- 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 | 0.0% |
| D: very slow infiltration (clayey, shallow or wet) | 93.8% |
| 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 | 6.2% |
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 Aledo (component kind "Series") in SSURGO: 299,891 acres.
- Method
- Shares are by mapped acres of Aledo components. The profile comes from the single largest Aledo component. Full methodology.