Aquifer test results from several studies in the Platte River valley, including Kollet and Zlotnik (2003), indicate that the values of the horizontal hydraulic conductivity have a wide range. The upper bound of the Kr value can be as large as 290 m/day. The values of Kr for the streambed sediments of the Platte River can be larger than 200 m/day, and a mean value as large as 293 m/day has been reported for one study site by Rus et al. (2001). Chen and Chen's (2003a) Kr values are compatible with the Kr values of the streambed measured at four sites in the Platte River channels. It is apparent that the range of the Kr values for the alluvial aquifer as well as for the channel sediments in the Platte River valley is much wider than Kollet has assumed. We believe that continued investigation of the hydraulic properties of both the alluvial aquifer and channel sediments in the Platte River will again yield a wide range of results. Chen and Chen's (2003a) study has filled some knowledge gaps on streamflow depletion parameters. The study of the effects of realistic and complex stream-aquifer-well conditions on streamflow depletion parameters, for example, a stream without a low-permeability streambed, remains an important topic of research, and numerical modeling approaches are good tools in such a study.
ASJC Scopus subject areas
- Water Science and Technology