Runnels County Soil Data
Runnels County, Texas
Avg pH
7.6
Texture
Clay Loam
Drainage
N/A
Organic Matter
2.0%
Hydrologic Group
D
Data Story
About Soil in Runnels County, Texas
Alkaline Earths of Central Texas
Runnels County features a pH of 7.63, which is more alkaline than the state average of 7.09 and the national median of 6.5. This level is common for the rolling plains and affects which micronutrients are available to plants.
A Firm Clay-Silt Foundation
The soil mix contains 40.1% sand, 29.5% silt, and 29.8% clay. This relatively high clay content provides good structural support for deep-rooted crops but can be difficult to plow when dry.
Above Average Fertility Levels
At 1.97%, the organic matter content is significantly higher than the state average of 1.66%. The available water capacity of 0.139 in/in also beats the state average, providing a better buffer against drought.
Slow Infiltration and Group D
The soil is classified under Hydrologic Group D, meaning it has high runoff potential and slow water movement. This makes it crucial to manage erosion on sloped fields and plan for drainage in gardens.
Productive Seasons in Zone 8a
Hardiness Zone 8a offers a long season for cotton, sorghum, and home vegetable gardens. The high organic matter means your plants have a head start on nutrition in this productive central county.
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 Runnels County have?
Runnels County's soil is classified as Clay Loam. This indicates the relative proportions of sand, silt, and clay — 40% sand, 30% silt, and 30% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Runnels County's soil acidic or alkaline?
Runnels County's soil has a pH of 7.6, which is mildly to moderately alkaline. Sulfur amendments can lower pH if needed.
What is the drainage class for Runnels County?
Drainage class data is not currently available for Runnels County.
What crops or plants grow well in Runnels County's soil?
Based on Runnels County's Clay Loam texture, pH of 7.6, 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 Runnels County?
The dominant USDA soil order for Runnels County is not currently available in our dataset.
Planning your lawn? View lawn care data for Runnels 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.