A Trip by the Numbers

mo river

From the edge of Yellowstone National Park to the foot of the St. Louis Gateway Arch:

  • States (7): Montana, North Dakota, South Dakota, Nebraska, Iowa, Kansas, Missouri (Wyoming??? Illinois???)
  • Total miles: 2,450
    • Madison River: 100
    • Missouri River: 2,341
    • Mississippi River: 9
  • Number of dams: 15
  • Average depth: 10 to 20 ft, at least 6ft at low water
  • Average current speed: 1.2 to 3 miles per hour, zero mph on the lakes
  • 3 of 5 of America’s largest reservoirs: Lake Sakakawea, Lake Oahe, Fort Peck Lake
  • Total number of days from start to finish: 90 to 140

mf