The Regreg river

[dirk]

Since I live in a desert region, I'll give you a answer. The flow of the river may be small but the height of the river channel to bank may make it a major river crossing. I know that the river channel for the Dirty Devil River in Utah can have a  ten to twenty foot drop from bank to water level. I would go with a Major river. Think of a very large anti-tank ditch.