Scott County, Iowa

Survey Area IA163 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 Scott County, Iowa.

Soil Map UnitAcresDrainageHydro GroupDwellingsSeptic
Tama silty clay loam, 2 to 5 percent slopes 40K Well drainedCSomewhat limitedVery limited
Tama silty clay loam, 5 to 9 percent slopes, eroded 27K Well drainedCSomewhat limitedVery limited
Muscatine silty clay loam, 0 to 2 percent slopes 24K Somewhat poorly drainedC/DVery limitedVery limited
Garwin silty clay loam, 0 to 2 percent slopes 11K Poorly drainedC/DVery limitedVery limited
Colo silty clay loam, 0 to 2 percent slopes, occasionally flooded 9K Poorly drainedC/DVery limitedVery limited
Downs-Urban land complex, 2 to 9 percent slopes 8K Well drainedCSomewhat limitedVery limited
Downs silt loam, till plain, 5 to 9 percent slopes, eroded 7K Well drainedCSomewhat limitedVery limited
Water 7K Not ratedNot rated
Ambraw-Perks-Lawson complex, frequently flooded, 0 to 2 percent slopes 6K Poorly drainedC/DVery limitedVery limited
Colo-Ely complex, 0 to 5 percent slopes 6K Poorly drainedC/DVery limitedVery limited
Tama silty clay loam, 9 to 14 percent slopes, eroded 6K Well drainedCSomewhat limitedVery limited
Ackmore silt loam, 0 to 2 percent slopes, occasionally flooded 5K Somewhat poorly drainedC/DVery limitedVery limited
Urban land 5K Not ratedNot rated
Downs silt loam, till plain, 9 to 14 percent slopes, eroded 5K Well drainedCSomewhat limitedVery limited
Dockery silt loam, 2 to 5 percent slopes 5K Somewhat poorly drainedB/DVery limitedVery limited
Downs silt loam, till plain, 2 to 5 percent slopes 4K Well drainedCSomewhat limitedVery limited
Killduff silty clay loam, 9 to 14 percent slopes, severely eroded 4K Moderately well drainedCSomewhat limitedSomewhat limited
Fayette silt loam, till plain, 5 to 9 percent slopes, eroded 4K Well drainedCSomewhat limitedVery limited
Tama silty clay loam, 5 to 9 percent slopes 3K Well drainedCSomewhat limitedVery limited
Killduff silty clay loam, 5 to 9 percent slopes, eroded 3K Moderately well drainedCSomewhat limitedVery limited

What This Means

Building & Foundations

About 34% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.

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

Drainage is generally favorable for gardening. Adding compost and mulch will improve fertility and water retention. Test your soil's pH before planting — most vegetables prefer 6.0-7.0.

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