Glacial Lake Columbia, Glacial lake in central Washington, United States.
Glacial Lake Columbia covered 500 square miles, stretching 30 miles in length and 20 miles in width, reaching depths of 600 feet.
The lake formed behind the Okanogan lobe of the Cordilleran Ice Sheet during the Wisconsin glaciation period, creating substantial geological formations.
The lake's sedimentary deposits contain annual varves that researchers study to understand the timing and frequency of prehistoric flooding events.
Visitors can observe ancient shorelines positioned above Lake Roosevelt, offering direct evidence of historical water levels and geological processes.
The lake experienced approximately 40 massive floods from Glacial Lake Missoula, with the largest flood measuring 2,500 cubic kilometers in volume.
GPS coordinates: 47.95000,-118.96000
Latest update: April 14, 2025 11:38
Grand Coulee Dam
1.8 km
Dry Falls
48.3 km
Grand Coulee
45 km
Banks Lake
20.4 km
Franklin D. Roosevelt Lake
1.7 km
Steamboat Rock State Park
16.1 km
Sun Lakes-Dry Falls State Park
49.5 km
Crab Creek
70.8 km
Alta Lake State Park
73.4 km
Wells Dam
67.6 km
Fort Okanogan
58.9 km
Withrow Moraine and Jameson Lake Drumlin Field
57.7 km
Fort Spokane
48.9 km
Omak Rock
43.9 km
Lake Lenore Caves State Park
68.1 km
Bridgeport State Park
48.9 km
Sims Corner Eskers and Kames
33.4 km
Beebe Bridge
77.1 km
Lake Pateros
67.6 km
Grand Coulee Bridge
2.4 km
Gallaher House
53.7 km
Columbia River Bridge
52 km
Creaser Hotel
79.4 km
Harrington Bank Block & Opera House
74.3 km
Fairweather–Trevitt House
79.3 km
Omak Theater
66.6 km
Mirage Theatre
66.6 km
Spokane River Bridge at Fort Spokane
48.2 kmReviews
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