Entries in GPR (1)


GPR imaging of ground water seepage within an earthen dam



This is one slice of a 3-D radar survey performed at an earthen dam in northeastern Indiana (click the image to enlarge). The bright areas near the center of the image indicate ground water saturation. A geotextile layer is imaged as an inclined planar surface, and breaching of ground water from the geotextile into the fill lifts is observed. This indicates failure of the textile to route seepage to the toe drain.