Austin and Waller Counties, Texas
The dominant drainage class is Moderately well drained and the dominant hydrologic group is D (very slow infiltration, high runoff). This report summarizes the major soil map units across the survey area to help you understand what to expect when buying, building, or gardening in Austin and Waller Counties, Texas.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Katy fine sandy loam, 0 to 1 percent slopes | 60K | Moderately well drained | C | Not limited | Very limited |
| Brazoria clay, 0 to 1 percent slopes, rarely flooded | 39K | Moderately well drained | D | Very limited | Very limited |
| Wockley fine sandy loam, 0 to 1 percent slopes | 37K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Tremona loamy fine sand, 1 to 5 percent slopes | 28K | Somewhat poorly drained | A | Somewhat limited | Very limited |
| Hockley loamy fine sand, 1 to 3 percent slopes | 27K | Well drained | B | Somewhat limited | Very limited |
| Kenney loamy fine sand, 2 to 8 percent slopes | 27K | Well drained | A | Not limited | Very limited |
| Cyfair-Katy complex, 0 to 1 percent slopes | 24K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Catilla loamy fine sand, 0 to 8 percent slopes | 22K | Moderately well drained | A | Somewhat limited | Very limited |
| Monaville loamy fine sand, 1 to 3 percent slopes | 21K | Moderately well drained | C | Not limited | Very limited |
| Tabor fine sandy loam, 1 to 5 percent slopes | 21K | Moderately well drained | D | Very limited | Very limited |
| Verland clay loam, 0 to 1 percent slopes | 19K | Somewhat poorly drained | D | Very limited | Very limited |
| Trinity clay, 0 to 1 percent slopes, frequently flooded | 17K | Moderately well drained | D | Very limited | Very limited |
| Lake Charles clay, 0 to 1 percent slopes | 17K | Moderately well drained | D | Very limited | Very limited |
| Frelsburg clay, 3 to 5 percent slopes | 16K | Moderately well drained | D | Very limited | Very limited |
| Churnabog clay, 0 to 1 percent slopes, frequently flooded, occasionally ponded | 14K | Poorly drained | C/D | Very limited | Very limited |
| Crockett fine sandy loam, 1 to 5 percent slopes | 12K | Moderately well drained | D | Very limited | Very limited |
| Wockley fine sandy loam, 1 to 3 percent slopes | 12K | Somewhat poorly drained | C/D | Very limited | Very limited |
| Styx loamy fine sand, 1 to 5 percent slopes | 11K | Well drained | B | Somewhat limited | Somewhat limited |
| Straber loamy fine sand, 1 to 5 percent slopes | 11K | Moderately well drained | D | Very limited | Very limited |
| Chazos loamy fine sand, 1 to 5 percent slopes | 10K | Moderately well drained | C | Somewhat limited | Very limited |
What This Means
Building & Foundations
About 53% of soils are rated "very limited" for dwellings with basements. Specific challenges include poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 97% of soils are rated "very limited" for septic absorption fields. Despite good drainage overall, limitations may stem from shallow bedrock, steep slopes, or seasonal conditions. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.
Gardening & Agriculture
Drainage is generally favorable for gardening. Adding compost and mulch will improve fertility and water retention. Test your soil's pH before planting — most vegetables prefer 6.0-7.0.