Pool 4 - Upper Mississippi River

Upper Mississippi River Pool Maps

River of History - Chapter 1 - Mississippi National River & Recreation Area (U.S. National Park Service)

GIS Data - Pool 13 - Upper Mississippi River

Search Results - ScienceBase - ScienceBase-Catalog

PDF) 22 Years of Aquatic Plant Spatiotemporal Dynamics in the Upper Mississippi River

Formation and early history of Lakes Pepin and St. Croix of the upper Mississippi River

Mississippi River - Pool 15

Mississippi River - Pool 18