Delaware County Soil Data
Delaware County, Oklahoma
Avg pH
5.2
Texture
Loam
Drainage
Subaqueous
Organic Matter
5.8%
Hydrologic Group
N/A
Data Story
About Soil in Delaware County, Oklahoma
Highly Acidic Soils in Delaware County
Delaware County has highly acidic soil with a pH of 5.21, well below the national median of 6.5. This low pH presents challenges for traditional crops but is perfect for acid-loving plants like blueberries.
Silty Texture Requires Careful Management
The soil consists of 24.0% sand, 45.5% silt, and 16.1% clay. This silty texture provides a smooth feel and decent workability, though it requires careful management to avoid surface erosion during storms.
Massive Organic Matter Boosts Growth
This county features a remarkable 5.83% organic matter, nearly triple the national average of 2.0%. This high fertility is complemented by an available water capacity of 0.150 in/in, which is better than the state average.
Subaqueous Drainage Challenges
The dominant drainage class is listed as subaqueous, indicating soils that are frequently saturated. This unique hydrology suggests that specialized wetland gardening or intensive drainage management is necessary for success.
Forest-Style Gardening in Zone 7a
Situated in Zone 7a, the county offers a robust environment for perennial shrubs and forest-style gardening. The high organic content makes this a powerhouse for growers who can manage the acidic conditions.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Hydrologic group data not available.
Drainage Class
Subaqueous
Drainage class: Subaqueous
Soil Profile
Dominant texture: Loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Delaware County have?
Delaware County's soil is classified as Loam. This indicates the relative proportions of sand, silt, and clay — 24% sand, 46% silt, and 16% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Delaware County's soil acidic or alkaline?
Delaware County's soil has a low pH of 5.2, which is strongly acidic. Acidic soils benefit from lime applications to raise pH and improve nutrient availability.
What is the drainage class for Delaware County?
Delaware County has a dominant drainage class of "Subaqueous." Moderate drainage allows adequate moisture retention while still permitting excess water to drain over time.
What crops or plants grow well in Delaware County's soil?
Based on Delaware County's Loam texture, pH of 5.2, and Subaqueous, the soil is well suited for acid-loving plants like blueberries and azaleas, row crops and vegetable gardens.
What USDA soil order is found in Delaware County?
The dominant USDA soil order for Delaware County is not currently available in our dataset.
Planning your lawn? View lawn care data for Delaware 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.