| Lake Madawaska | |
|---|---|
| Location | Ontario |
| Coordinates | 45°24′20″N76°20′30″W / 45.40556°N 76.34167°W |
| Type | reservoir |
| Primary inflows | Madawaska River |
| Primary outflows | Madawaska River |
| Basin countries | Canada |
| Settlements | Arnprior, Ontario |
Lake Madawaska is the headpond of the Arnprior Generating Station (operated by Ontario Power Generation) [1] near the town of Arnprior, Ontario. The lake was created in 1976 by a hydroelectric dam on the Madawaska River just before it joins the Ottawa River.