Corps, USGS Deploy 800-Pound ‘Dart’ To Map Levees Corps, USGS Deploy 800-Pound ‘Dart’ To Map Levees
Corps, USGS Deploy 800-Pound ‘Dart’ To Map Levees

Last summer, people living along the Mississippi River from its confluence with the Ohio all the way down to Baton Rouge, La., might have seen a strange sight: a helicopter… Read More