Grayson County, Texas
The most common soil here is Normangee, on about 9% of the land: a clay loam, firm and a little sticky. Crockett and Wilson come next.
About 51% of the land drains well.
USDA rates 88% of the land very limited for a standard septic drain field, and 73% very limited for homes with basements. That means extra cost or special design, not that it can't be done.
Worth knowing: 8% of the land floods occasionally or more, and bedrock lies within 40 inches under 27% of it.
Soils change over short distances, so look up an address below for the soil at that exact spot and the reasons behind each rating.
The soils you're most likely standing on
The biggest named soils in Grayson County, Texas, each drawn five feet deep from its official USDA description, in its recorded colors.
Dots mark gravel; white flecks mark lime. Shares are by acres across the survey area, and each mapped patch usually mixes several of these soils.
The biggest mapped areas
The dominant drainage class is Moderately well drained and the dominant hydrologic group is D (very slow infiltration, high runoff). The most common soil order is Alfisols — moderately leached forest soils with a clay-enriched subsoil. 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 Grayson County, Texas. Search your address to find the exact soil composition, drainage, and series details at your specific location.
| Soil Map Unit | Acres | Drainage | Hydro Group | Dwellings | Septic |
|---|---|---|---|---|---|
| Fairlie and Houston Black clays, 1 to 3 percent slopes | 64K | Moderately well drained | D | Very limited | Very limited |
| Normangee clay loam, 1 to 3 percent slopes | 47K | Moderately well drained | C | Very limited | Very limited |
| Water | 31K | D | Not rated | Not rated | |
| Crockett loam, 2 to 5 percent slopes, eroded | 25K | Moderately well drained | D | Very limited | Very limited |
| Wilson silty clay loam, 1 to 3 percent slopes | 23K | Moderately well drained | D | Very limited | Very limited |
| Whitewright-Eddy-Howe complex, 5 to 12 percent slopes | 21K | Well drained | D | Very limited | Very limited |
| Crockett loam, 1 to 3 percent slopes | 20K | Moderately well drained | D | Very limited | Very limited |
| Vertel clay, 3 to 5 percent slopes | 19K | Well drained | D | Very limited | Very limited |
| Elbon soils, frequently flooded | 18K | Moderately well drained | C | Very limited | Very limited |
| Wilson silty clay loam, 0 to 1 percent slopes | 18K | Moderately well drained | D | Very limited | Very limited |
| Heiden clay, 3 to 5 percent slopes | 17K | Well drained | D | Very limited | Very limited |
| Vertel clay, 5 to 12 percent slopes | 17K | Well drained | D | Very limited | Very limited |
| Crosstell fine sandy loam, 2 to 5 percent slopes, eroded | 17K | Well drained | D | Very limited | Very limited |
| Bunyan and Whitesboro soils, frequently flooded | 16K | Well drained | B | Very limited | Very limited |
| Austin silty clay, 2 to 5 percent slopes, moderately eroded | 16K | Well drained | D | Somewhat limited | Very limited |
| Aubrey-Birome complex, 3 to 12 percent slopes | 16K | Well drained | D | Somewhat limited | Very limited |
| Heiden clay, 1 to 3 percent slopes | 15K | Well drained | D | Very limited | Very limited |
| Austin silty clay, 1 to 3 percent slopes | 13K | Well drained | D | Somewhat limited | Very limited |
| Aubrey fine sandy loam, 5 to 8 percent slopes | 11K | Well drained | D | Somewhat limited | Very limited |
| Callisburg fine sandy loam, 2 to 5 percent slopes erode d | 10K | Well drained | C | Somewhat limited | Very limited |
Soil Orders in This Area
The USDA classifies every soil into one of 12 soil orders. Here are the dominant orders found in this survey area.
What This Means
Building & Foundations
About 73% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, flood-prone areas. A geotechnical assessment is recommended before building.
Septic Systems
About 88% 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.