The local rivers are running high. Both the Ottawa and the Petawawa are above or near record levels.
The control dam at Rapides des Joachims is essentially wide open even though the head pond is perhaps six feet below summer levels. They need the capacity to catch the massive outflows expected from central Quebec that are still to come.
For a while, the Petawawa River was threatening the bridge in the Town of Petawawa, prompting its closing. However, by dumping large quantities of blast rock down the shore embankment, they have stopped the shore erosion and the bridge has reopened.