Which river in the United States is nicknamed Old Man River and is also the chief river of the second largest drainage system on the North American continent?
Mississippi River
Colorado River
Colorado River
Missouri River
Mississippi River
The Missouri River
Colorado River
Missouri River
The Missouri River
Mississippi River
Columbia River
The Mississippi River
Colorado River
Missouri River
The Missouri River
The Mississippi River
The Missouri River
Mississippi River
Columbia River
Colorado River
The Mississippi River
The Colorado River
Missouri River
The Missouri River
Colorado River, Missouri River
Hudson River
Colorado River, Colorado River
The Mississippi River
Missouri River, Missouri River
The Colorado River
Mississippi River
The Missouri River, Missouri River
St. Lawrence River
Colorado River
Columbia River, Missouri River
The Missouri River, Mississippi River
Colorado River, Mississippi River
Missouri River, Mississippi River
The Missouri River
Columbia River
Cascades
Missouri River
Arkansas River
Caspian Sea
Colorado River - Colorado River
The Mississippi River
The Colorado River
Yellowstone River
Mississippi River, Mississippi River
The Missouri River, Missouri River
River of the Americas
The Missouri River, Mississippi River
Cascades
Colorado River
Caspian Sea
The Missouri River
St. Lawrence River
Hudson River
Mississippi River
Colorado River.
Niagara River
The Colorado River
The Mississippi River, Mississippi River
River of the Americas
St. Johns River
Colorado River, Missouri River
The Yellowstone River
Missouri River
The Mississippi River
Colorado River, Colorado River
The Missouri River, Missouri River
Columbia River
St. John River
Mississippi
The Missouri River.
Missouri River, Missouri River
Colorado River
The Missouri River, Mississippi River
Arkansas River
Mississippi
Columbia River, Missouri River
The Colorado River
Colorado River, Mississippi River
Missouri River, Mississippi River
River of the Americas
Mississippi
Missouri River.
The Missouri River
Cascade River
The Yellowstone River
Mississippi River
The Missouri River.
St. Lawrence River
River of the Americas.
Yellowstone River
Colorado River - Colorado River
The Mississippi River, Mississippi River
St. Johns River
Hudson River
Missouri River
Mississippi
The Mississippi River
River of the Plains
Colorado River / Colorado River
Colorado River.
The Missouri River, Missouri River
River of the United States
Colorado River, Arkansas River
St. John River
Mississippi
The Columbia River
Colorado River
Columbia River
River of the Americas
The Missouri River, Mississippi River
Mississippi
River of the Golden Gate
River of the North
The Missouri River.
The Colorado River
River of the Yellowstone
River of the Golden Isles
River of the United States
Arkansas River
Mississippi River
River of the Plains
Cascades River
Colorado River, Colorado River
Grand Canyon
The Yellowstone River
St. Johns River
Colorado River, Missouri River
Mississippi
The Missouri River
Missouri River
Rio Grande
Caspian Sea.
St. Croix River
Cascade River
St. Francis River
River of the North
River of the Golden Gate
Cascades Creek
Colorado River
The Mississippi River, Mississippi River
St. Louis River
Rivers of North America
Mississippi
Colorado
Missouri River.
Grand Canyon
Cascade Range
The Mississippi River
The Columbia River
Missouri River, Missouri River
Cascades Canyon
The Missouri River, Missouri River
Rivers of America
The Yellowstone River
River of the Americas
Rio Grande
The Missouri River.
River of the West
Mississippi
Colorado
Colorado River.
Colorado River, Mississippi River
Cascade Mountains
Missouri River, Mississippi River
The Missouri River, Arkansas River
Hudson River
River of the Plains
River of the North
Grand Canyon
St. John River
River of the Golden Gate
Columbia River
Caspian Sea.
Niagara River
The Colorado River
St. Clair River
The Missouri River, Mississippi River
River of the South
Mississippi River
Mississippi
Cascades River
Colorado
The Missouri River
Cascade Range
Cascades Creek
River of the West
St. Croix River
The Yellowstone River
River of the Mountains
Colorado River
Missouri River
Cascades Canyon
Grand Canyon
Rivers of America
River of the North
Mississippi