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Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mississippi River, Muscatine, Muscatine County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mississippi River, Muscatine, Muscatine County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mississippi River, Muscatine, Muscatine County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mississippi River, Muscatine, Muscatine County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 13, Upper Mississippi River, Fulton, Whiteside County, IL

Mississippi River 9-Foot Channel Project, Lock & Dam No. 13, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 22, Upper Mississippi River, Saverton, Ralls County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mississippi River, Muscatine, Muscatine County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 13, Upper Mississippi River, Fulton, Whiteside County, IL

Mississippi River 9-Foot Channel Project, Lock & Dam No. 13, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 13, Upper Mississippi River, Fulton, Whiteside County, IL

Mississippi River 9-Foot Channel Project, Lock & Dam No. 13, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 22, Upper Mississippi River, Saverton, Ralls County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 22, Upper Mississippi River, Saverton, Ralls County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 21, Upper Mississippi River, Quincy, Adams County, IL

Mississippi River 9-Foot Channel Project, Lock & Dam No. 21, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 13, Upper Mississippi River, Fulton, Whiteside County, IL

Mississippi River 9-Foot Channel Project, Lock & Dam No. 13, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 22, Upper Mississippi River, Saverton, Ralls County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 22, Upper Mississippi River, Saverton, Ralls County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mississippi River, Muscatine, Muscatine County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mississippi River, Muscatine, Muscatine County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 13, Upper Mississippi River, Fulton, Whiteside County, IL

Mississippi River 9-Foot Channel Project, Lock & Dam No. 13, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 22, Upper Mississippi River, Saverton, Ralls County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 22, Upper Mississippi River, Saverton, Ralls County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 22, Upper Mississippi River, Saverton, Ralls County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 22, Upper Mississippi River, Saverton, Ralls County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mississippi River, Muscatine, Muscatine County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 13, Upper Mississippi River, Fulton, Whiteside County, IL

Mississippi River 9-Foot Channel Project, Lock & Dam No. 13, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 21, Upper Mississippi River, Quincy, Adams County, IL

Mississippi River 9-Foot Channel Project, Lock & Dam No. 21, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mississippi River, Muscatine, Muscatine County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 16, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi River, Le Claire, Scott County, IA

Mississippi River 9-Foot Channel, Lock & Dam No. 14, Upper Mississippi...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mississippi River, Dubuque, Dubuque County, IA

Mississippi River 9-Foot Channel Project, Lock & Dam No. 11, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Mississippi River 9-Foot Channel Project, Lock & Dam No. 13, Upper Mississippi River, Fulton, Whiteside County, IL

Mississippi River 9-Foot Channel Project, Lock & Dam No. 13, Upper Mis...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 22, Upper Mississippi River, Saverton, Ralls County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 22, Upper Mississippi River, Saverton, Ralls County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex No. 20, Upper Mississippi River, Canton, Lewis County, MO

Upper Mississippi River Nine-Foot Channel Project, Lock & Dam Complex ...

Significance: The U.S. Army Corps of Engineers Nine-Foot Channel Project (1927-1940) represents the culmination of a 100-year effort to improve the navigability of the Upper Mississippi River between the mouth ... More

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