• Iowa Soil Drainage Class Maps [gSSURGO]

    “Drainage class (natural)” refers to the frequency and duration of wet periods under conditions similar to those under which the soil formed. Alterations of the… Read More

  • Iowa Soil Drainage Class Maps

    “Drainage class (natural)” refers to the frequency and duration of wet periods under conditions similar to those under which the soil formed. Alterations of the… Read More

  • Iowa Depth to Water Table Maps [gSSURGO]

    “Water table” refers to a saturated zone in the soil. It occurs during specified months. Estimates of the upper limit are based mainly on observations… Read More

  • Iowa Depth to Water Table Maps

    “Water table” refers to a saturated zone in the soil. It occurs during specified months. Estimates of the upper limit are based mainly on observations… Read More

  • Iowa Soil pH Maps

    Soil reaction is a measure of acidity or alkalinity. It is important in selecting crops and other plants, in evaluating soil amendments for fertility and… Read More