Ida County, Iowa

Survey Area IA093 Iowa

The dominant drainage class is Well drained and the dominant hydrologic group is C (slow infiltration, moderate runoff). 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 Ida County, Iowa.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Galva silty clay loam, 2 to 5 percent slopes 28K Well drainedCSomewhat limitedVery limited
Galva silty clay loam, 5 to 9 percent slopes, eroded 24K Well drainedCSomewhat limitedVery limited
Colo-Judson silty clay loams, 0 to 5 percent slopes, occasionally flooded 23K Poorly drainedC/DVery limitedVery limited
Monona silty clay loam, 9 to 14 percent slopes, eroded 22K Well drainedCSomewhat limitedSomewhat limited
Galva silty clay loam, 5 to 9 percent slopes 19K Well drainedCSomewhat limitedVery limited
Kennebec silty clay loam, 2 to 5 percent slopes, occasionally flooded 12K Moderately well drainedCVery limitedVery limited
Monona silty clay loam, 5 to 9 percent slopes, eroded 10K Well drainedCNot limitedSomewhat limited
Kennebec silty clay loam, 0 to 2 percent slopes, occasionally flooded 8K Moderately well drainedCVery limitedVery limited
Marshall silty clay loam, 5 to 9 percent slopes, eroded 7K Well drainedCSomewhat limitedVery limited
Galva silty clay loam, 2 to 5 percent slopes, eroded 7K Well drainedCSomewhat limitedVery limited
Colo silty clay loam, deep loess, 0 to 2 percent slopes, occasionally flooded 7K Poorly drainedC/DVery limitedVery limited
Judson silty clay loam, deep loess, 5 to 9 percent slopes 6K Well drainedCSomewhat limitedVery limited
Galva silty clay loam, 9 to 14 percent slopes, eroded 6K Well drainedCSomewhat limitedVery limited
Colo silt loam, deep loess, 0 to 2 percent slopes, overwash, occasionally flooded 5K Poorly drainedC/DVery limitedVery limited
Monona silty clay loam, 9 to 14 percent slopes, severely eroded 5K Well drainedCSomewhat limitedSomewhat limited
Ida silt loam, 9 to 14 percent slopes, severely eroded 5K Well drainedBSomewhat limitedSomewhat limited
Monona silty clay loam, 14 to 20 percent slopes, severely eroded 4K Well drainedCVery limitedVery limited
Exira silty clay loam, 9 to 14 percent slopes, eroded 4K Well drainedCSomewhat limitedVery limited
Marshall silty clay loam, 2 to 5 percent slopes 4K Well drainedCSomewhat limitedVery limited
Primghar silty clay loam, 2 to 5 percent slopes 4K Somewhat poorly drainedC/DVery limitedVery limited

What This Means

Building & Foundations

About 30% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.

Septic Systems

About 80% 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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