Multiple choice general knowledge Shortest River Kavery river Roe River Nile river Ganges Reveal answer Fill a bubble to check yourself B Correct answer Explanation The Roe River in Montana, USA is recognized by Guinness World Records as the shortest river at just 201 feet (61 meters) long. It flows from Giant Springs to the Missouri River. Note: 'Kavery' is a spelling error (should be 'Kaveri').