Clark County Soil Data
Clark County, Kansas
Avg pH
7.5
Texture
Fine sandy loam
Drainage
Well drained
Organic Matter
1.5%
Hydrologic Group
B
Data Story
About Soil in Clark County, Kansas
Classic Western Kansas Mollisols
Clark County is characterized by Mollisols, the deep, dark soils known for prairie fertility, though here they lean alkaline with a pH of 7.46. This pH is notably higher than the national median of 6.5 and the state average of 6.80. The overall soil score of 34.3 reflects the limited rainfall and lower organic content of the region.
The Versatility of Fine Sandy Loam
The dominant texture is a fine sandy loam, backed by 44.3% sand and 36.1% silt. With only 19.3% clay, this soil is exceptionally easy to work and resists compaction. It offers a porous structure that allows roots to penetrate deeply and quickly.
Lean Organic Profiles in the South
Organic matter sits at 1.47%, which is below the national average of 2.0% and the Kansas average of 2.22%. The available water capacity is also lower than average at 0.166 in/in. Gardeners in Clark County will need to focus on building soil health through composting to improve these baseline numbers.
Well Drained and Ready for Rain
Classified as well-drained and part of hydrologic group B, these soils handle moderate rainfall with ease. This combination of fine sandy loam and group B classification means water moves steadily through the profile without pooling. It is an ideal setup for preventing root rot in sensitive plants.
Drought-Tolerant Varieties for Zone 6b
Clark County’s Zone 6b climate favors hardy perennials and crops that can withstand the summer heat. Mediterranean herbs, succulents, and deep-rooted native wildflowers are perfectly suited for the 44.3% sand content. Start a garden using water-wise techniques to see the best results in this well-drained landscape.
Soil Composition
Soil pH
Soil Series
Detailed soil series data not yet available for this county.
Hydrologic Group
Group B — Moderate Runoff
Moderately deep, moderately well-drained soils with moderate infiltration rates. Good balance of drainage and water retention.
Drainage Class
Well drained
Water is removed from the soil readily but not rapidly. Optimal for most plants and construction.
Soil Profile
Dominant texture: Fine sandy loam
Typical soil profile. Actual depths vary by location.
USDA Soil Orders
Frequently Asked Questions
What type of soil does Clark County have?
Clark County's soil is classified as Fine sandy loam. This indicates the relative proportions of sand, silt, and clay — 44% sand, 36% silt, and 19% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Clark County's soil acidic or alkaline?
Clark County's soil has a pH of 7.5, which is near neutral. This range is ideal for most garden plants and field crops.
What is the drainage class for Clark County?
Clark County has a dominant drainage class of "Well drained." Well-drained soils allow excess water to move through quickly, reducing waterlogging risk and supporting most field and garden crops.
What crops or plants grow well in Clark County's soil?
Based on Clark County's Fine sandy loam texture, pH of 7.5, and Well drained, the soil is well suited for drought-tolerant crops and native grasses, row crops and vegetable gardens, most annual and perennial crops.
What USDA soil order is found in Clark County?
Clark County's dominant soil order is Mollisols. Mollisols are fertile, dark-colored soils that formed under grassland vegetation. They are among the most productive agricultural soils in the world.
Planning your lawn? View lawn care data for Clark County on LawnByCounty.com →
Other Counties in Kansas
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.