Caddo County Soil Data
Caddo County, Oklahoma
USDA SSURGO / PHZMAvg pH
6.0
Texture
Water
Drainage
N/A
Organic Matter
1.3%
Hydrologic Group
D
Data Story
About Soil in Caddo County, Oklahoma
Classic Oklahoma Soil Profile
Caddo County's soil pH of 6.03 matches the state average of 6.06 almost exactly. While more acidic than the national median of 6.5, it remains a standard profile for productive regional farmland.
Light and Easy to Work
The soil texture is composed of 43.5% sand, 31.5% silt, and 15.4% clay. This creates a light-to-medium feel that is relatively easy to work but requires attention to moisture levels.
Need for Supplemental Watering
Organic matter is 1.35%, which is lower than the Oklahoma average of 1.72%. The water capacity of 0.135 in/in also sits below the state benchmark, suggesting that supplemental watering is often necessary.
Managing Runoff in Caddo
As part of Hydrologic Group D, the soil can be prone to runoff during high-intensity rainfall. Understanding this hydrology is vital for farmers to manage drainage patterns and prevent topsoil loss.
Famous Peanut and Melon Land
Caddo's Zone 7b climate is famous for peanut production and diverse melon varieties. Adding organic amendments will help bridge the gap in fertility and improve water retention for home gardens.
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: Water
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Soil Amendment Products
Browse products to improve your soil health and lawn performance.
Browse Soil AmendmentsFrequently Asked Questions
What type of soil does Caddo County have?
Caddo County's soil is classified as Water. This indicates the relative proportions of sand, silt, and clay — 43% sand, 31% silt, and 15% clay. Sandy soils drain quickly but may need more frequent irrigation and fertilization.
Is Caddo County's soil acidic or alkaline?
Caddo County's soil has a pH of 6.0, which is moderately acidic. This range suits many crops and is common across much of the eastern US.
What is the drainage class for Caddo County?
Drainage class data is not currently available for Caddo County.
What crops or plants grow well in Caddo County's soil?
Based on Caddo County's Water texture, pH of 6.0, and drainage class, the soil is well suited for vegetables, grains, and most field crops.
What USDA soil order is found in Caddo County?
The dominant USDA soil order for Caddo County is not currently available in our dataset.
Soil & Planting Advisory: Caddo County
Soil Verdict
Caddo County is in USDA hardiness zone 7b, a moderate climate zone. where winter lows can reach 5°F. Mild winters mean soil rarely freezes deeply, allowing year-round microbial activity and faster organic matter breakdown.
Planting Guidance
Warm-season crops, citrus relatives, and heat-loving ornamentals do well. Cool-season vegetables should be planted in fall and winter. Always match plant selections to the specific microclimate of your property — low spots, slopes, and wind exposure can shift effective hardiness by half a zone.
Soil Implications
Warm soils accelerate organic matter breakdown, so compost and mulch need replenishing more frequently than in cooler zones. Sandy soils common in warm zones drain quickly; water-retentive amendments like compost or peat help hold moisture.
Regional Context
Caddo County closely matches the Oklahoma average hardiness conditions.
Planning your lawn? View lawn care data for Caddo County on LawnByCounty.com →
Other Counties in Oklahoma
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.