Clay County Soil Data
Clay County, Texas
Avg pH
7.0
Texture
Loam
Drainage
N/A
Organic Matter
1.3%
Hydrologic Group
D
Data Story
About Soil in Clay County, Texas
Nearly Neutral Soil Profile
Clay County features an average pH of 7.04, which is almost perfectly neutral and sits right near the state average of 7.09. This is slightly higher than the national median of 6.5 but provides an excellent baseline for most plants. Such a balanced pH makes it one of the more flexible counties for diverse gardening.
Sand-Heavy Loam Textures
The soil mix contains 49.8% sand, 31.0% silt, and 19.2% clay. This nearly 50% sand content ensures the soil doesn't become overly compacted or impossible to work during dry spells. It provides a balanced environment for root systems to thrive and expand.
Healthy Water Storage Capacity
With an available water capacity of 0.147 in/in, Clay County's soil holds moisture better than the state average of 0.133 in/in. Organic matter is 1.34%, which is slightly below the state's 1.66% average. Adding compost can help bridge that gap and further improve the soil's natural productivity.
Managing Slow Water Infiltration
The county's soils primarily fall into hydrologic group D, indicating slow water movement and high runoff potential. This means that while the soil holds water well, it doesn't take it in very quickly during intense rain. Proper surface management is necessary to prevent erosion on agricultural land.
Diverse Planting in Zone 8a
Clay County resides in USDA Hardiness Zone 8a, offering a long and productive growing season. The neutral pH and good water capacity are perfect for growing everything from pecans to tomatoes. It is a fantastic place to start a backyard vegetable garden or a small orchard.
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: Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Clay County have?
Clay County's soil is classified as Loam. This indicates the relative proportions of sand, silt, and clay — 50% sand, 31% silt, and 19% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Clay County's soil acidic or alkaline?
Clay County's soil has a pH of 7.0, which is near neutral. This range is ideal for most garden plants and field crops.
What is the drainage class for Clay County?
Drainage class data is not currently available for Clay County.
What crops or plants grow well in Clay County's soil?
Based on Clay County's Loam texture, pH of 7.0, 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 Clay County?
The dominant USDA soil order for Clay County is not currently available in our dataset.
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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.