The Corps of Engineers spends hundreds of millions of dollars each year
dredging harbors and river shipping channels nationwide to keep them
open. For more than 30 years conservationists have been yearning for
ways to do more than just keep barge canals open. They want to save
vulnerable river backwaters and ever-shallower lakes. Until recently
there has never been a technology capable of moving the amount of
sediment at reasonable costs while keeping the environment safe. But,
as the Great Lakes Radio Consortium’s Charlie Schlenker reports, that
may be changing: