Webster County, Iowa

Survey Area IA187 Iowa

The dominant drainage class is Poorly drained and the dominant hydrologic group is C/D (varies with drainage). This report summarizes the major soil map units across the survey area to help you understand what to expect when buying, building, or gardening in Webster County, Iowa.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Webster clay loam, 0 to 2 percent slopes 85K Poorly drainedC/DVery limitedVery limited
Nicollet clay loam, 1 to 3 percent slopes 55K Somewhat poorly drainedC/DVery limitedVery limited
Kossuth silty clay loam, 0 to 2 percent slopes 50K Poorly drainedC/DVery limitedVery limited
Canisteo clay loam, 0 to 2 percent slopes 50K Poorly drainedC/DVery limitedVery limited
Clarion loam, 2 to 6 percent slopes 45K Moderately well drainedCSomewhat limitedVery limited
Okoboji silty clay loam, 0 to 1 percent slopes 21K Very poorly drainedC/DVery limitedVery limited
Lester-Belview complex, 22 to 40 percent slopes 16K Well drainedCVery limitedVery limited
Nicollet-Guckeen complex, 1 to 3 percent slopes 11K Somewhat poorly drainedDVery limitedVery limited
Brownton silty clay loam, 0 to 2 percent slopes 11K Poorly drainedC/DVery limitedVery limited
Harps clay loam, 0 to 2 percent slopes 10K Poorly drainedC/DVery limitedVery limited
Clarion loam, 6 to 10 percent slopes, moderately eroded 8K Well drainedBSomewhat limitedSomewhat limited
Guckeen clay loam, 1 to 3 percent slopes 8K Somewhat poorly drainedC/DVery limitedVery limited
Coland clay loam, 0 to 2 percent slopes, occasionally flooded 5K Poorly drainedC/DVery limitedVery limited
Fluvaquents, loamy, 0 to 2 percent slopes, frequently flooded 4K Very poorly drainedA/DVery limitedVery limited
Pits, gypsum quarries 4K Not ratedNot rated
Wacousta silty clay loam, depressional, 0 to 1 percent slopes 4K Very poorly drainedC/DVery limitedVery limited
Corvuso-Brownton complex, 0 to 2 percent slopes 4K Poorly drainedDVery limitedVery limited
Water 3K Not ratedNot rated
Angus loam, 2 to 6 percent slopes 3K Well drainedCSomewhat limitedVery limited
Clarion clay loam, 2 to 5 percent slopes 3K Moderately well drainedCSomewhat limitedSomewhat limited

What This Means

Building & Foundations

About 83% of soils are rated "very limited" for dwellings with basements. Specific challenges include shallow bedrock, steep slopes, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.

Septic Systems

About 95% of soils are rated "very limited" for septic absorption fields. Poorly drained soils can't absorb septic effluent effectively. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.

Gardening & Agriculture

Many soils hold water for extended periods. Raised beds are highly recommended to improve drainage for vegetables. Well-adapted native plants and water-loving species will do best in natural conditions.

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