King County Soil Data
King County, Texas
Avg pH
7.5
Texture
Loam
Drainage
N/A
Organic Matter
1.2%
Hydrologic Group
D
Data Story
About Soil in King County, Texas
Alkaline Soils in King County
The soil here has a pH of 7.54, making it significantly more alkaline than the national 6.5 benchmark. This level is also higher than the typical Texas average of 7.09.
Sandy Mix for Aeration
The soil mix is 46.2% sand, balanced by 31.8% silt and 20.9% clay. This lighter texture provides decent aeration for roots while maintaining enough clay to hold some nutrients for plant growth.
Moderate Fertility and Water Capacity
Organic matter is low at 1.22%, trailing the state average of 1.66%. However, the available water capacity of 0.144 in/in is higher than the state average, meaning the soil holds moisture well.
High Runoff Potential Concerns
As part of hydrologic group D, these soils generally have very slow infiltration rates despite the higher sand content. Dense sub-layers may cause water to pool or run off quickly during storms.
Gardening in Hardiness Zone 8a
Zone 8a offers a long season for warm-weather crops like melons and okra. Focus on building up soil health with mulch and organic amendments to support more demanding vegetable varieties.
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 King County have?
King County's soil is classified as Loam. This indicates the relative proportions of sand, silt, and clay — 46% sand, 32% silt, and 21% clay. Loamy soils hold moisture well and support a wide range of plants.
Is King County's soil acidic or alkaline?
King County's soil has a pH of 7.5, which is mildly to moderately alkaline. Sulfur amendments can lower pH if needed.
What is the drainage class for King County?
Drainage class data is not currently available for King County.
What crops or plants grow well in King County's soil?
Based on King County's Loam texture, pH of 7.5, 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 King County?
The dominant USDA soil order for King County is not currently available in our dataset.
Planning your lawn? View lawn care data for King 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.