Aquifer Characterization Through GPR and Borehole Analysis : Eau Claire Municipal Well Field, Wisconsin
Green, Mark M.
Keicher, Patrick A.
Jol, Harry M.
Morrison, Sean M.
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Our project's goal is to improve characterization of the aquifer supplying the Eau Claire municipal well held by correlating borehole data with GPR profiles to produce stratigraphic models at a higher degree of accuracy than traditional methods. Using a pulseEKKO 100 system, GPR data was collected across a 150 m and two 50 m transects to a depth of 12 m using a frequency of 100 MHz with a 0.5 m step size and 1 m antennae separation. The results show two facies representing a migrating sidebar and an expanding floodplain. Borehole data was collected to a depth of 30 m revealing grain size ranging between medium sand to gravel. Combining these data will ultimately lead to more accurate models than those produced using only point-source data. This method is effective in many geologic settings and can provide hydrogeologists with an accurate, cost-effective way to characterize aquifers without relying on costly point-source data.
Ground penetrating radar
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