The purpose of this thesis was to determine the hydraulic conductivity of discrete five foot intervals in the aquifer located at the Bonita, S.D.S.U well field. Slug tests were used to test vertically contiguous five foot intervals of a monitoring well using a system of straddle packers. Two cycles of coarsening downward sediment were revealed by the slug test. A chief goal of this thesis was to compare the slug test straddle packer method to electrical conductivity data and the relatively labor intensive tracer test method.