soil survey

Iowa Soil Saturated Hydraulic Conductivity (Ksat) Maps [gSSURGO]
Saturated hydraulic conductivity (Ksat) refers to the ease with which pores in a saturated soil transmit water. The estimates are expressed in terms of micrometers… Read More

22 July 2019
Iowa Soil Clay Content Maps [gSSURGO]
Clay as a soil separate consists of mineral soil particles that are less than 0.002 mm in diameter. The estimated clay content of each soil… Read More

22 July 2019
Iowa Soil Silt Content Maps [gSSURGO]
Silt as a soil separate consists of mineral soil particles that are 0.002 to 0.05 mm in diameter. In the database, the estimated silt content… Read More

22 July 2019
Iowa Soil Sand Content Maps [gSSURGO]
Sand as a soil separate consists of mineral soil particles that are 0.05 mm to 2 mm in diameter. In the database, the estimated sand… Read More

22 July 2019
Iowa Soil Water Content – 15 Bar Maps (wilting point) [gSSURGO]
Water content, -15 bar, is the amount of soil water retained at a tension of -15 bars, expressed as a volumetric percentage of the whole… Read More

22 July 2019
Iowa Soil Water Content – 1/3 Bar Maps (field capacity) [gSSURGO]
Soil water content at -1/3 bar is the amount of soil water retained at a suction tension of 1/3 bar, expressed as a volumetric percentage… Read More

22 July 2019
Iowa Soil Bulk Density – 1/3 Bar Maps [gSSURGO]
Bulk density, one-third bar, is the oven-dry weight of the soil material less than 2 mm in size per unit volume of soil at water… Read More

22 July 2019
Iowa Soil Organic Matter Maps [gSSURGO]
Organic matter is the plant and animal residue in the soil at various stages of decomposition. The estimated content of organic matter is expressed as… Read More

22 July 2019
Iowa Soil Available Water Capacity Maps [gSSURGO]
Available water capacity (AWC) refers to the volume of water held per volume of soil that is available for plant uptake. This water typically occurs… Read More

19 July 2019
Water Table Depth – gSSURGO
To download print image, right click within the pop-up gallery view and select “save image as” 01DWTJan… Read More

19 June 2019