Lac Deschênes
Lac Deschênes is a 44 kilometres (27 miles) long lake on the Ottawa River that runs from the Chats Falls Dam near Fitzroy Harbour in the west to the Deschênes Rapids at Britannia in the east. It is a little over 3.2 kilometres (2.0 miles) wide at its widest point and little more than a few hundred metres at its narrowest. The provincial border between Ontario and Quebec runs through the length of the lake with the City of Ottawa on its southern shore and the city of Gatineau on much of its northern shore.
| Lac Deschênes | |
|---|---|
Lac Deschênes | |
| Location | Ottawa, Ontario and Gatineau / Pontiac, Quebec |
| Coordinates | 45°23′N 75°52′W |
| Primary inflows | Ottawa River, Carp River, Constance Creek, Shirley's Brook, Watts Creek, Still Water Creek, Graham Creek |
| Primary outflows | Ottawa River |
| Catchment area | 90,900 km2 (35,100 sq mi) |
| Basin countries | Canada |
| Max. length | 44 km (27 mi) |
| Max. width | 3.2 km (2.0 mi) |
| Average depth | 9.0 m (29.5 ft) |
| Max. depth | 49 m (161 ft) |
| Surface elevation | 57.9 m (190 ft) |
| Islands | Kedey's Island (ON), Île O'Connor (QC), Alexandra Island (ON), Île Mohr (QC), Île Allen (QC) (Twelve Mile Island), Alymer Island (ON) |
| Settlements | Ottawa (ON), Gatineau (QC) |
| References | |
The shoreline is mostly gently sloped and composed of broken limestone interspersed with smaller sections of aquatic shoreline vegetation or mudflats. Above the Chats Falls Dam is Lac des Chats. Below Britannia is a series of rapids and waterfalls culminating with the Chaudière Falls. Between the rapids and the falls, the river is not navigable.