Author(s)

T. Wasklewicz, S. Franklin, S. Greulich & J. Grubaugh

Abstract

Changes in the hydrologic periodicity of the Mississippi River, USA 1 T O 0 T. Wasklewicz , S. Franklin , S. Greulich , and J. Grubaugh *Dept. of Geography, University of Memphis, USA *Dept. of Biology, University of Memphis, USA *Ecologie des Hydrosystemes Fluviaux, Uniersity Claude Bernard, France Abstract The Mississippi River Basin is the largest in North America. Throughout much of its recent history, it has experienced channel modification from management schemes that have relied on engineered solutions. To determine how some of the hydrologic processes have changed the present study examines the temporal variability in data from historic river stage records. The temporal autocorrelation at nine gages along the mainstem of the Mississippi River were examined using semivariance analysis for pre- and post-regulation time- periods. Significant changes in the temporal dependence were identified from the pre- to post-reg

Keywords