So how does one go about dynamiting these rocks without creating the river equivalent of tsunamis?
Typically if the water is that shallow the troublesome rocks would be cofferdammed around enough to expose the tops at least, then rock-drilled and blasted into small enough pieces for the dredge to pick up. No really large explosions required-——just “stitch “ lines across the high spots and turn them into gravel. Some where a room full of geniuses is wishing they’d done this decades ago assuming the rocks are the actual problem and not the result of some previous half-assed flood control project.
or setting off the New Madrid?