Mississippi River
Mackenzie River
St. Lawrence River
Snake River
Yukon River
Columbia River
Peace River
Ohio River
Rio Grande River
Colorado River
Canadian Shield
Appalachian Mountains
Great Basin
Mt. Elbert
Mt. Denali
Rocky Mountains
Great Plains
Mt. Logan
Great Bear Lake
Lake Huron
Lake Athabasca
Labrador Sea
Lake Michigan
Great Slave Lake
Hudson Bay
Lake Ontario
Lake Winnipeg
Lake Superior
Gulf of Mexico
Lake Erie
Gulf of Alaska
Missouri River
