Thursday saw much needed rainfall over a decent chunk of Iowa. The Ames area received two to over three inches of rain, so it is a good time to check in on the ISU soil moisture sensors to see if the rain soaked in. The featured chart is from the sensor at the "Kitchen Farm", just southwest of Ames. The chart plots the soil moisture sensors at various depths down to 40 inches below the surface since the start of June. The side panels show the depth soil moisture values at the start of June and the most recent observation plotted. The soaking nature of the rain is immediately noticeable with even the shallowest depth starting to dry as the water soaks deeper into the soil. You may be wondering what is happening with the 40 inch value as a 0.7 volumetric value is very high. The belief/hope is that the water table rose to a depth shallower than 40 inches and so the sensor at that depth is submerged. The sensor is in a "prairie pot hole" region with a shallow water table.

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