Based on the findings of this project, the following recommendations are made.

   Finding a high percentage (- 30 %) of the tested wells that appear not to have a good hydraulic
   connection with the aquifer, these wells should be repaired or replaced with one of suitable size
   so that a good hydraulic connection is established between the well and the geologic unit it taps.
   This will improve the efficiency and quality of the network, and optimize the use of project

   Detailed interpretation of the geophysical logs should be made to provide additional useful
   information such as depths and thickness of geologic formations.

   All accessible network wells should be tested on a regular basis (for example every five years) to
   ensure that they are in good hydraulic connection with the geologic unit.

                                     Cited References

Dunning C. P., Ellefson B. R., and Zaporozec A., 1996, Collection of hydraulic and geologic data to
improve the quality of the Wisconsin observation-well network: WGNHS/USGS report to Wisconsin
DNR on project no. 118, 44 p.

Hvorslev M. J., 1951, Time lag and soil permeability in ground-water observations: U.S. Army Corps of
Engineers, Waterways Experimental Station, Bulletin 36, 50 p.

Keyes W. S., and MacCary L. M., 1971, Application of borehole geophysics to water-resources
investigations: Techniques of Water-Resources Investigations of the Unites States Geological Survey,
Book 2, Chapter El, 126 p.

Zaporozec A., 1996, Wisconsin ground-waterobservation-well network, 1946-95 : Wisconsin
Geological and Natural History Survey Educational Series 40, 13 p.

                          WATER RESOURCES INSTITUTE
                             UNIVERSITY OF WISCONSIN
                                 1975 WILLOW DRIVE
                              MADISON, WI 53706-1103