Waldo Lake
| Waldo Lake | |
|---|---|
| Location | Cascade Mountains, Lane County, Oregon, US |
| Coordinates | 43°43′48″N 122°02′32″W / 43.729918°N 122.0423006°W |
| Type | Alpine |
| Primary outflows | North Fork Middle Fork Willamette River |
| Basin countries | United States |
| Max. length | 5.75 mi (9.25 km) |
| Max. width | 2.75 mi (4.43 km) |
| Surface area | > 10 sq mi (26 km2) |
| Average depth | mean: 128 ft (39 m) |
| Max. depth | 420 ft (130 m) |
| Water volume | 0.9537 km3 (0.2288 cu mi) |
| Residence time | 32 years |
| Surface elevation | 5,420 ft (1,650 m) |
Waldo Lake is a natural alpine lake in the Cascade Mountains of the U.S. state of Oregon. It is the second largest natural non-alkali lake in Oregon with just under 10 square miles (26 km2) of water surface and a maximum depth of 420 feet (130 m). The lake is named after Oregon politician, judge, and conservationist John B. Waldo.