Humboldt County Soil Data
Humboldt County, Iowa
Avg pH
6.6
Texture
Loam
Drainage
N/A
Organic Matter
5.6%
Hydrologic Group
N/A
Data Story
About Soil in Humboldt County, Iowa
Near-Neutral Soils with High Potential
Humboldt County's soil pH averages 6.57, nearly identical to the national median of 6.5. This balance is slightly more alkaline than the Iowa state average of 6.43. With a soil score of 78.3, this land is ranked among the higher-quality agricultural areas in the state.
Balanced Texture for All Uses
The composition is split between 38.0% sand, 37.0% silt, and 23.1% clay. This balance provides the drainage benefits of sand alongside the nutrient retention of clay and silt. It is a versatile mix that supports both traditional row crops and diverse home gardens.
Rich Organic Matter and Solid Capacity
Organic matter is very high at 5.56%, far exceeding the Iowa average of 3.81%. While the available water capacity of 0.188 in/in is just below the state average, the rich organic content ensures high fertility. This soil is naturally well-equipped to feed growing plants throughout the season.
Productive Ground with Stable Hydrology
While specific drainage class data is unavailable, the county's high soil score of 78.3 suggests favorable water management. The balanced texture usually allows for decent infiltration while maintaining enough moisture for crop health. You can expect reliable performance from this land in most weather conditions.
Planting Powerhouse in Zone 5a
In Hardiness Zone 5a, these high-organic soils are ideal for everything from corn to heavy-feeding vegetables like broccoli and squash. The near-neutral pH means most plants can access nutrients without needing soil amendments. Start your seeds with confidence in this premium Iowa soil.
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
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 Humboldt County have?
Humboldt County's soil is classified as Loam. This indicates the relative proportions of sand, silt, and clay — 38% sand, 37% silt, and 23% clay. Loamy soils hold moisture well and support a wide range of plants.
Is Humboldt County's soil acidic or alkaline?
Humboldt County's soil has a pH of 6.6, which is near neutral. This range is ideal for most garden plants and field crops.
What is the drainage class for Humboldt County?
Drainage class data is not currently available for Humboldt County.
What crops or plants grow well in Humboldt County's soil?
Based on Humboldt County's Loam texture, pH of 6.6, and drainage class, the soil is well suited for vegetables, grains, and most field crops, row crops and vegetable gardens.
What USDA soil order is found in Humboldt County?
The dominant USDA soil order for Humboldt County is not currently available in our dataset.
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Other Counties in Iowa
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.