The longest route in this dataset is almost certainly from Northwest Montana to the Gulf of Mexico; see, eg. the beautiful illustration of watersheds in North A

The longest route in this dataset is almost certainly from Northwest Montana to the Gulf of Mexico; see, eg. the beautiful illustration of watersheds in North America at [1]. Example: [2] [1] https://www.visualcapitalist.com/maps-worlds-watersheds/ https://www.visualcapitalist.com/maps-worlds-watersheds/ [2] https://river-runner.samlearner.com/?lng=-113.26136901231438&lat=48.47374874798547 https://river-runner.samlearner.com/?lng=-113.26136901231438...