A study to evaluate and elaborate a rational strategy for the streamgaging program in the State of Illinois has been performed at the Illinois State Water Survey. One of the important aspects of the study was to evaluate the regional value of each station through a regional analysis of its low, average and high flows. Analysis has been performed for the main physiographic regions in the State, and the stations have been evaluated using a new approach based on entropy analysis. Several information parameters, including total transinformation transmitted and received by a station, as well as the total net information, were computed for each station within a region. The stations were ranked based on those parameters. For comparison, a different approach to the gage network analysis based on generalized least square method, developed by the U.S. Geological Survey, was applied to the same data sets. An example from a region in southern Illinois is presented and the results of the two approaches are evaluated. Copyright ASCE 2004.