Washington's largest lakes

The Grand Coulee Dam is massive enough to hold back the waters of the largest lake in the state. At 123.4 square miles, Lake Roosevelt winds more than 50 miles up the Columbia River's course in northeastern Washington. It and the next nine largest lakes make up today's list.

-1. Lake Franklin D Roosevelt, 79,000 acres
-2. Umatilla Lake, 52,000 acres*
-3. Lake Wallula, 38,800 acres*
-4. Lake Chelan, 33,104 acres
-5. Potholes Reservoir, 28,200 acres
-6. Banks Lake, 24,900 acres
-7. Lake Washington, 22,138 acres
-8. Ross Lake, 11,678 acres
-9. Moses Lake, 6,815 acres
10. Osoyoos Lake, 5,729 acres*

*straddles state line; acreage given only for portion within Washington.

List adapted from: The Washington Almanac: Facts About Washington by Andrea Jarvela (WestWinds Press, 1999)