Discover the 10 Largest Lakes in Washington

Written by Jennifer Gaeng
Published: September 15, 2023
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Washington, the Evergreen State, is renowned for its breathtaking landscapes, diverse ecosystems, and abundant natural wonders. Among its many treasures, lakes hold a special place, offering a serene retreat and endless opportunities for outdoor adventures.

In this article, we invite you to embark on a journey to explore the 10 largest lakes that grace the picturesque lands of Washington. From the majestic depths of Lake Chelan to the tranquil shores of Lake Sammamish, each lake on this list boasts its unique charm and grandeur, leaving visitors spellbound with their sheer size and natural beauty. So, let’s dive in and discover the awe-inspiring wonders that await at the largest lakes in Washington!

1.      Lake Chelan:

Mountains near Lake Chelan

Lake Chelan in Washington is a large lake that stretches over 50 miles.

©Fen Kuntz/Shutterstock.com

Nestled in the heart of the Cascade Mountains, Lake Chelan stretches over 50 miles, making it one of the largest natural lakes in Washington. Its crystal-clear blue waters are surrounded by steep hillsides and snow-capped peaks, creating a breathtaking backdrop for outdoor enthusiasts and nature lovers alike.

2.      Lake Crescent:

Lake Crescent at Olympic National Park, Washington, USA

Lake Crescent in Washington is a large, crystal-clear lake in Olympic National Park.

©Galyna Andrushko/Shutterstock.com

Tucked away in Olympic National Park, Lake Crescent is a pristine glacial lake renowned for its deep blue waters and serene beauty. Spanning over 12 miles in length, this majestic lake offers a tranquil retreat and is a popular destination for boating, fishing, and hiking amidst the towering evergreens.

3.      Franklin D. Roosevelt Lake:

Franklin D. Roosevelt Lake (Lake Roosevelt) in Washington state

Franklin D. Roosevelt Lake (Lake Roosevelt) in Washington state has a surface area of over 130,000 acres.

©Steve Bower/Shutterstock.com

Named after the 32nd President of the United States, Franklin D. Roosevelt Lake is an expansive reservoir created by the Grand Coulee Dam on the Columbia River. With a surface area of over 130,000 acres, this massive lake provides ample opportunities for boating, water sports, and fishing, while also serving as a stunning backdrop for the surrounding rugged landscapes.

4.      Moses Lake:

sunset over Moses Lake in state Washington

Moses Lake is one of the largest lakes in the state of Washington.

©alexmisu/Shutterstock.com

Located in the heart of the Columbia Basin, Moses Lake is a sprawling freshwater lake covering approximately 6,800 acres. Renowned for its size and recreational opportunities, this bustling lake attracts visitors from near and far for boating, swimming, and jet-skiing, while its sandy beaches offer the perfect spot for sunbathing and picnicking.

5.      Potholes Reservoir:

Potholes Reservoir, Washington

The Potholes Reservoir in Washington covers around 28,000 acres.

©Joe Mabel / Creative Commons – Original / License

Situated in the arid landscapes of Central Washington, Potholes Reservoir is an expansive body of water covering roughly 28,000 acres. Formed by the O’Sullivan Dam, this reservoir is a haven for anglers, with its abundance of fish species such as walleye and bass, while also offering ample space for water sports and birdwatching.

6.      Lake Washington:

USA, Washington State, Bellevue. Newport Shores neighborhood, Lake Washington and floating bridge in autumn, with Seattle in distance.

Lake Washington is a large lake located in the bustling city of Seattle.

©Danita Delimont/Shutterstock.com

Spanning over 22,000 acres, Lake Washington is the second-largest natural lake in Washington. With its proximity to Seattle and the stunning backdrop of the Cascade Mountains, this iconic lake is a hub for recreational activities, including boating, sailing, and kayaking, while also offering breathtaking views of the surrounding cityscape.

7.      Lake Wallula:

Lake Wallula in Washington stretches more than 64 miles and is a popular spot for fishing and wildlife watching.

©Gregory Varnum / Creative Commons – Original / License

Formed by the McNary Dam on the Columbia River, Lake Wallula stretches over 64 miles, spanning parts of both Washington and Oregon. This expansive reservoir is famous for its size and picturesque landscapes, attracting visitors with its ample opportunities for fishing, boating, and wildlife watching.

8.      Lake Coeur d’Alene (partially in Washington):

Lake Coeur d’Alene, which is mostly located in Idaho, spreads partially into Washington and has a surface area of over 50 square miles.

©Inland Northwest Visuals/Shutterstock.com

Although primarily located in Idaho, Lake Coeur d’Alene spills over into Washington, showcasing its grandeur across state lines. With a surface area of over 50 square miles, this magnificent lake is renowned for its sparkling emerald-green waters, surrounding mountains, and a plethora of recreational activities, including boating, fishing, and scenic cruises.

9.      Lake Ozette:

Ozette Lake

Ozette Lake in Washington covers 8 square miles and is located in Olympic National Park making it an excellent shoreline for hiking.

©iStock.com/JachanDeVol

Nestled within Olympic National Park, Ozette Lake is a hidden gem known for its unspoiled beauty and pristine surroundings. Covering approximately 8 square miles, this tranquil lake offers visitors the chance to explore its shores, hike through ancient forests, and immerse themselves in the serenity of nature.

10.   Lake Sammamish:

Pine Lake Sammamish Washington USA Aerial View

Pine Lake Sammamish in Washington is over 7 miles in length and is known for its lush surroundings of pine trees near the Cascade Mountains.

©SEASTOCK/iStock via Getty Images

Located just east of Seattle, Pine Lake Sammamish is a picturesque freshwater lake spanning over 7 miles in length. With its sandy beaches, clear waters, and idyllic setting, this popular recreational destination attracts visitors for swimming, boating, paddleboarding, and picnicking, all while enjoying the stunning views of the surrounding Cascade Mountains.

In Conclusion

As our journey through the 10 largest lakes in Washington comes to an end, it is evident that these aquatic wonders hold a profound significance in the heart of this beautiful state. From the sparkling blue waters of Lake Crescent to the sprawling expanse of Lake Roosevelt, each lake has its own tale to tell and its unique allure to captivate our senses.

These lakes not only provide a haven for outdoor enthusiasts and water lovers but also play a vital role in supporting the delicate ecosystems of Washington. From sustaining diverse wildlife to acting as a vital water source for surrounding communities, these lakes are invaluable treasures that must be cherished and protected for generations to come.

So, the next time you find yourself in Washington, make sure to set aside some time to explore these magnificent lakes!

The photo featured at the top of this post is © Michael J Magee/Shutterstock.com


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About the Author

Jennifer Gaeng is a writer at A-Z-Animals focused on animals, lakes, and fishing. With over 15 years of collective experience in writing and researching, Jennifer has honed her skills in various niches, including nature, animals, family care, and self-care. Hailing from Missouri, Jennifer finds inspiration in spending quality time with her loved ones. Her creative spirit extends beyond her writing endeavors, as she finds joy in the art of drawing and immersing herself in the beauty of nature.

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