Tom Green County Soil Data
Tom Green County, Texas
Avg pH
7.2
Texture
Clay Loam
Drainage
N/A
Organic Matter
2.4%
Hydrologic Group
D
Data Story
About Soil in Tom Green County, Texas
Slightly Alkaline Soils in San Angelo
Tom Green County features soils with an average pH of 7.23, which is slightly more alkaline than the national median of 6.5. This pH level is common for the Concho Valley and supports a variety of native species.
Heavier Soil with Significant Clay
The soil contains 29.8% clay and 33.0% silt, creating a relatively heavy texture. With sand at 28.7%, the soil holds nutrients well but can become sticky and difficult to work when wet.
Rich Organic Matter Surpasses Averages
The county boasts an impressive organic matter level of 2.37%, well above the 2.0% national average. The available water capacity of 0.131 in/in is nearly identical to the Texas state average.
Low Infiltration and High Runoff Potential
Belonging to hydrologic group D, these soils have very low infiltration rates when saturated. This can lead to standing water in low areas and requires careful drainage planning for home foundations.
Hardy Crops for Zone 8a
In hardiness zone 8a, these organic-rich soils are excellent for cotton, alfalfa, and pecans. Home gardeners should take advantage of the high organic matter to grow robust vegetable crops like squash and okra.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Group D — High Runoff
Clay soils with very slow infiltration rates. Highest runoff potential. These soils have a permanent high water table or are shallow over impervious material.
Drainage Class
Drainage class data not available.
Soil Profile
Dominant texture: Clay Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Tom Green County have?
Tom Green County's soil is classified as Clay Loam. This indicates the relative proportions of sand, silt, and clay — 29% sand, 33% silt, and 30% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Tom Green County's soil acidic or alkaline?
Tom Green County's soil has a pH of 7.2, which is near neutral. This range is ideal for most garden plants and field crops.
What is the drainage class for Tom Green County?
Drainage class data is not currently available for Tom Green County.
What crops or plants grow well in Tom Green County's soil?
Based on Tom Green County's Clay Loam texture, pH of 7.2, and drainage class, the soil is well suited for drought-tolerant crops and native grasses, row crops and vegetable gardens.
What USDA soil order is found in Tom Green County?
The dominant USDA soil order for Tom Green County is not currently available in our dataset.
Planning your lawn? View lawn care data for Tom Green County on LawnByCounty.com →
Other Counties in Texas
Soil data sourced from USDA SSURGO via Soil Data Access. Data is informational only and should not be used as a substitute for on-site soil testing. Contact your local NRCS office for site-specific soil information.