Sand Boil Behind Levee

Sand Boil Behind Levee


This show the bubbling of sand near a levee in the lowlying farmlands, the sand seepage results from the pressure gradient that is caused by high river stage in flood conditions. This example is near Bennington Levee, Indiana, where the White River was at flood stage in March 2011. The sand boil was an indicator of the underminng of the levee and a 25 ft breach did happen during this same flood.

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