I've been tracking Minot's Souris river levels too, yet another record breaker.
The second crest rose so fast and high that they had little time to prepare for it.
The Souris has never been that high since records were kept dating back to 1881.
Other smaller towns along the Souris, like Burlington (above Minot), Sawyer, Velva (below Minot) also had flooding problems.
Charts mine, data here.
North Dakota Rivers - Souris highlighted:
(Layer the two on top of each other.)