Wetlands destruction and urban sprawl have exacerbated flooding problems in the upper Midwest, where floods caused massive damage in 1993 and 1997, according to a new report by the Sierra Club. The group blames the U.S. Army Corps of Engineers for contributing to the problems by approving nearly all requests for permits to destroy wetlands in the region between 1988 and 1996, the last year for which data are available.
