America 250 Environmental History of Mississippi

Threats for the Upper Mississippi River never stop, but they do change over time.  Still the river and watershed has improved in the recent decades.  Long time Wisconsin D-N-R Warden Steve Dewald witnessed a lot of change and was influential in enforcement and improvements for commercial oil vessels on the River.  As part of our America 250 coverage Mr. Dewald shared his knowledge and appreciation of the Mississippi with LaCrosseTalk host Sean Dwyer. See omnystudio.com/listener for privacy information.