The Effigy Mounds are one of the densest collections still existing in North America, but the Mississippi River is eating ...
Sinkler divided the different types of ports into three levels. Terminals ... of these port regions in the upper Midwest along or leading to the Mississippi River. The Northern Grain Belt Ports ...
A dry fall is resulting in the early closure of two locks along the Upper Mississippi River. The U.S. Army Corps of Engineers ...
The Upper Mississippi River National Wildlife and Fish Refuge ... the elevation of islands to protect trees from higher water levels. “The way we build these islands is usually dredged material ...
The Upper Mississippi River National Wildlife and Fish Refuge is the core of ... Some projects focus on raising the elevation of islands to protect trees from higher water levels. “The way we build ...