Trempealeau County, Wisconsin

Survey Area WI121 Wisconsin

The dominant drainage class is Well drained and the dominant hydrologic group is B (moderate infiltration). 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 Trempealeau County, Wisconsin.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Boone-Elevasil complex, 15 to 45 percent slopes, rocky 62K Excessively drainedAVery limitedVery limited
Seaton silt loam, driftless ridge, 12 to 20 percent slopes, moderately eroded 37K Well drainedBVery limitedVery limited
Hixton silt loam, 12 to 20 percent slopes, moderately eroded 22K Well drainedCVery limitedVery limited
Hixton silt loam, 20 to 30 percent slopes, moderately eroded 22K Well drainedCVery limitedVery limited
Norden silt loam, 12 to 20 percent slopes, moderately eroded 18K Well drainedCVery limitedVery limited
Seaton silt loam, driftless ridge, 6 to 12 percent slopes, moderately eroded 17K Well drainedBSomewhat limitedSomewhat limited
Urne fine sandy loam, 30 to 45 percent slopes 14K Well drainedBVery limitedVery limited
Ettrick silt loam, 0 to 2 percent slopes, frequently flooded 14K Poorly drainedC/DVery limitedVery limited
Orion silt loam, 0 to 3 percent slopes, occasionally flooded 12K Somewhat poorly drainedB/DVery limitedVery limited
Festina silt loam, 1 to 6 percent slopes, moderately eroded 12K Well drainedBSomewhat limitedSomewhat limited
Norden silt loam, 6 to 12 percent slopes, moderately eroded 12K Well drainedCSomewhat limitedVery limited
Seaton silt loam, driftless ridge, 20 to 30 percent slopes, moderately eroded 12K Well drainedBVery limitedVery limited
Norden silt loam, 20 to 30 percent slopes, moderately eroded 11K Well drainedCVery limitedVery limited
Gaphill-Rockbluff complex, 30 to 60 percent slopes 9K Well drainedAVery limitedVery limited
Bilson sandy loam, 1 to 6 percent slopes 9K Well drainedANot limitedVery limited
Northbend-Ettrick silt loams, 0 to 3 percent slopes, frequently flooded 9K Somewhat poorly drainedB/DVery limitedVery limited
Urne fine sandy loam, 20 to 30 percent slopes, moderately eroded 8K Well drainedBVery limitedVery limited
Hixton silt loam, 6 to 12 percent slopes, moderately eroded 8K Well drainedCSomewhat limitedVery limited
Elevasil sandy loam, 12 to 20 percent slopes, moderately eroded 8K Well drainedBVery limitedVery limited
Palms and Houghton mucks, 0 to 1 percent slopes 7K Very poorly drainedA/DVery limitedVery limited

What This Means

Building & Foundations

About 82% of soils are rated "very limited" for dwellings with basements. Specific challenges include steep slopes, poor drainage in some areas, flood-prone areas. A geotechnical assessment is recommended before building.

Septic Systems

About 91% of soils are rated "very limited" for septic absorption fields. Despite good drainage overall, limitations may stem from shallow bedrock, steep slopes, or seasonal conditions. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.

Gardening & Agriculture

Well-drained soils on sloped terrain — good for most plants but watch for erosion. Terracing, contour planting, and mulching help retain moisture and topsoil. Drip irrigation is more effective than sprinklers on slopes.

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