The Iowa Environmental Mesonet (IEM) collects environmental data from cooperating members with observing networks. The data are stored and made available on this website.

IEM Daily Feature

Soil Water Removal

Posted: 12 Aug 2022 05:30 AM, Views: 847
The featured chart presents a time series of observed soil moisture from the ISU Soil Moisture station near Ames. The sensor is buried in a soybean field with sensors at the denoted depths below the ground surface. The chart nicely shows the depletion of soil water with time as the layers start drying sequentially with depth. This nicely shows the advancement of the crop roots as they grow deeper and tap moisture available at that level. You may notice that the 52 inch value is just starting to tick downward. This site has not been too bad off for drought conditions this year, but has recently been very dry and certainly could use more rainfall to help the crops reach yield potential.
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2012: Wet weeks
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Soil Temperatures

Data from the Iowa State Soil Moisture Network is found on this website and daily soil temperature averages are used to produce the highlighted analysis.


Besides point observations of precipitation, the IEM also processes gridded rainfall products made available by NOAA. This information is archived and made available in GIS ready formats.

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Current Data

The IEM combines data from participating networks into products like maps shown above and web applications to analyze the data.

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ISU Agronomy
IIHR - University of Iowa