The causes of the 2018 and 2019 spring freshets are explained in this You Tube video, Flooding in New Brunswick: Cause and Effect. It answers my questions. Jasmin Boisvert is a water resources specialist. He may be understated on the role of deforestation and flooding but his other factors, however, seem spot-on. Addressing the effect of the Mactaquac Dam and river control is the best explanation I have heard. His explanation of not using the answer of “climate change” to explain the flooding was satisfying to me.
Please watch the video through along with the discussion at the end for an understanding of the flood season in NB.
I often entertain myself with factors to predict the flood season but this shows how complex the determination is in reality.