May 2022

Pac-Man and Bluefish breakup events in 2022

The timing and intensity of river ice breakup depends on multiple factors driven by hydrological and meteorological conditions. Breakup may start gradually but can end with a significant ice jam flood. In turn, there are years where most ingredients are gathered for high water levels at breakup, yet Nature decides otherwise, and water levels remain low. The science (or the art) of breakup forecasting is far from infallible, but several tools and indicators exist to inform public services and the population about the annual risk of ice jam floods.

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