American Rivers, a national nonprofit river advocacy group, has named the Kansas River as one of America's Most Endangered Rivers due to the increased threat of in-river sand dredging. Five Kansas sand and gravel companies recently proposed to increase dredging on the Kansas River by more than 50%, including re-opening stretches previously closed because of unacceptable degradation from earlier dredging activities.  That proposal is currently under review by the U.S. Army Corps of Engineers with a decision expected sometime this year.