Largest lakes & reservoirs in North Central Washington by water volume
The estimated volume of water that a lake contains is measured at the lake’s normal elevation. By this measure, the world’s largest freshwater lake is Siberia’s Lake Baikal.Water Volume can be measured in acre-feet, in cubic miles, or in cubic kilometers. One acre-foot is the amount of water needed to cover one acre (43,560 square feet) to a depth of one foot. One cubic mile equals 3,379,200 acre-feet. One cubic kilometer equals 810,713 acre-feet. 1 acre-foot is equal to 325,851 US gallons. Siberia’s Lake Baikal contains about 6,276,367,740,000,000 gallons of freshwater – nearly 1 million gallons for every living person on earth.
The other – and more widely used – measure of a lake’s size is the lake’s surface acreage. By that measure, the world’s largest freshwater lake is North America’s Lake Superior.
Note: In the United States, an acre foot is a unit of volume used to refer to large-scale bodies of water. It is defined by the volume of water needed to cover 1 acre of surface area to a depth of 1 foot.
You can find many of the the world’s largest lakes (by water volume) on LakeLubbers. Note: For some lakes, the water volume data is unknown or does not apply, so you may see fewer lakes than the total 15 articles we have published for North Central Washington lakes.
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Below are lakes within USA > US West Region > Washington > North Central Washington > Compared by water volume. This list does not represent all lakes in North Central Washington, only the 15 North Central Washington lake articles we have published on the LakeLubbers website.
Lake name  |
Water vol. in ac-ft |
Lake description |
|---|---|---|
| Banks Lake, WA (North Central Washington, US West Region, USA, Washington) |
1,275,000 ac-ft | Banks Lake is a 27 mile equalizing reservoir and part of the Columbia Basin Project, a major water resource project to provide irrigation water to fer … |
| Lake Chelan, WA (North Central Washington, US West Region, USA, Washington) |
1,040,000 ac-ft | From the Salish Indian word for “deep notch”, Lake Chelan is the third deepest lake in the United States with a maximum depth of almost 1500 feet. Lak … |
| Ross Lake (British Columbia, Canada, Canada, North Central Washington, US West Region, USA, Washington) |
770,000 ac-ft | (Also known as Ross Reservoir) Spectacular Ross Lake is one of the seldom seen gems in north-central Washington. This fantastic 22-mile long reservoir covers 11,680 acres along the … |
| Potholes Reservoir, WA (North Central Washington, US West Region, USA, Washington) |
500,000 ac-ft | Potholes Reservoir was formed by the building of the O’Sullivan Dam which is one of the largest earthfill dams in the United States. The name “pothole … |
| Cle Elum Lake, WA (North Central Washington, US West Region, USA, Washington) |
436,900 ac-ft | (Also known as Lake Cle Elum) Providing much needed water to the dry, fertile soil of north-central Washington, Cle Elum Lake is the largest of four irrigation storage reservoirs i … |
| Lake Entiat, WA (North Central Washington, US West Region, USA, Washington) |
382,000 ac-ft | (Also known as Rocky Reach Reservoir) No trip to the north central part of Washington would be complete without a visit to Lake Entiat and the Rocky Reach Dam. Lake Entiat is a 9,100 acre … |
| Lake Wenatchee, WA (North Central Washington, US West Region, USA, Washington) |
364,560 ac-ft | Lake Wenatchee is a high mountain lake located in the Wenatchee National Forest in the Cascade Mountains of Washington state. Fed by the Little Wenatc … |
| Lake Osoyoos, WA / Canada (British Columbia, Canada, Canada, North Central Washington, US West Region, USA, Washington) |
266,800 ac-ft | (Also known as Osoyoos Lake) Lake Osoyoos spans more than 5,700 acres and straddles the border of British Columbia, Canada and Washington state in the United States. The Okanagan … |
| Kachess Lake, WA (North Central Washington, US West Region, USA, Washington) |
239,000 ac-ft | “Kachess” means “more fish,” a name that aptly describes Lake Kachess in North Central region of Washington. The lake is full of fish, and anglers can … |
| Keechelus Lake, WA (North Central Washington, US West Region, USA, Washington) |
157,900 ac-ft | (Also known as Lake Keechelus, Keechelus Reservoir) It is a picture postcard – snow capped mountains mirrored back in clean, clear, mountain water. Set against the backdrop of Washington’s Cascade Mount … |
| Moses Lake, WA (North Central Washington, US West Region, USA, Washington) |
131,000 ac-ft | Located where Washington State’s Pacific coast transforms into the arid desert of the eastern half, Moses Lake has over 6,800 acres of surface area en … |
| Billy Clapp Lake, WA (North Central Washington, US West Region, USA, Washington) |
21,200 ac-ft | Located in north central Washington, two miles northeast of Stratford, Billy Clapp Lake offers visitors year round access to its deep blue waters. Bil … |