Hurricanes Katrina and Rita transformed some 100 square miles of marsh to open water in southeastern Louisiana, according to preliminary estimates by U.S. Geological Survey (USGS) based on an analysis of Landsat satellite data from September and October.
Future observations of Landsat imagery over the upcoming year will allow scientists at the USGS National Wetlands Research Center (NWRC) in Baton Rouge and Lafayette, La., to determine how much of the loss is permanent and how the marsh recovers. Although this early analysis of wetlands does not take into account some marsh recovery, indications are that much of the loss may be permanent. Some of the new areas of open water will likely become new lakes...
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