(photo by Bob: 2006-03-26 - explore)
Swisha The Ottawa River looking down the Deep River Reach from Rapides des Joachims (Swisha). The open water here is due to current, but perhaps more importantly, the power dam drawing relatively warmer (~4C) water from depth in the head pond. However, the same effect in summer guarantees that the river downstream is cold. (The power dam tailrace is to the right.)