How often does the Red River Valley flood?
It floods to some extent every year there is average or above snowfall. As you'd expect, the more snowmelt there is, the higher the river rises during flood stage. One of the main reasons the land is so popular for farming there is because the periodic flooding wash more topsoil onto the area than the flooding removes.
Other people asked questions on similar topics, check out the answers they received:
Other people asked questions on various topics, and are still waiting for answer. Would be great if you can take a sec and answer them