Lake Chelan, looking northwest from Lakeside Park near Chelan.
|Location||Chelan County, Washington,
|Primary inflows||Stehekin River|
|Primary outflows||Chelan River|
|Basin countries||United States|
|Max. length||50.5 mi (81.3 km)|
|Surface area||52.1 sq mi (135 km2)|
|Average depth||474 ft (144 m)|
|Max. depth||1,486 ft (453 m)|
|Water volume||15,800,000 acre feet (1.95×1010 m3)|
|Residence time||10.6 years|
|Shore length1||109.2 mi (175.7 km)|
|Surface elevation||1,098 ft (335 m)|
|Settlements||Chelan, Manson, Stehekin, Holden, Lucerne|
|1 Shore length is not a well-defined measure.|
Fed by streams from the Cascade Range and the Chelan Mountains, Lake Chelan has a maximum depth of 1,486 ft (453 m) (although some sources cite 1,420 feet), making it the third deepest lake in the country and the 26th deepest in the world. The surface of the lake is 1,098 feet (335 m) above sea level, while the average width of the lake is one mile.
The city of Chelan sits at the southeast tip of the lake, where its water flows into the Chelan River through the hydroelectric Lake Chelan Dam. At the northwest end of the lake is the town of Stehekin, where the town's namesake river, the Stehekin River, flows into the lake. The Stehekin is the lake's largest inflow stream. Access to the far end of the lake is limited to boat, plane, or hiking.
Lake Chelan State Park lies along the southern shore of the lake, and can be accessed from the city of Chelan by road. The northern portion of the lake is protected by Lake Chelan National Recreation Area. The area is also home to the Lake Chelan AVA.
Swimmer for cancer awareness
In 2011, Emily von Jentzen became the first person alive in america to swim the length of Lake Chelan, which she did in 36 hours. She performed the feat to raise money for Katelyn Roker, a young girl battling stage-4 neuroblastoma. von Jentzen chronicled her training for the swim on a blog, A Lakke for Katelyn. [sic]
Lake Chelan Crossing by Standup Paddleboard
On July 11, 2014, Lake Chelan was crossed via standup paddleboard (SUP) from Stehekin to Chelan in 12 hours, 30 minutes by Matt Parker and Joe Walker. It was the first such crossing. They left the Stehekin River at 7:15 AM on July 11, 2014 and touched dry land at Campbell's Resort in Chelan, WA at 8:45 PM that same day. They traveled via 14' SUP boards. 
- "TMDL Case Study: Lake Chelan, Washington". EPA Number: 841F94001. Environmental Protection Agency. January 1994. Retrieved 2007-02-11.
- Kendra, Will; Lynn Singleton (January 1987). "Morphometry of Lake Chelan". Ecology Report 87-1. Washington State Department of Ecology. Retrieved 2007-06-26.
- "Native American Legends". USDA Forest Service - Pacific Northwest Region. Retrieved 2007-06-26.
- Story; LA Times; retrieved 2013-10-30
- She Conquers Lake Chelan; September 2, 2011; Wenatchee World article online; retrieved ?
- Swim; Seattle Times article; retrieved ?
- Kalispell Woman Becomes First Person to Swim Lake Chelan; Flathead Beacon article; retrieved ?
- A Lakke for Katelyn blog
- "Paddleboard Adventure on Lake Chelan"; July 16, 2014; Go Lake Chelan article online;
|Wikimedia Commons has media related to Lake Chelan.|
- National Park Service Lake Chelan
- University of Washington Libraries Digital Collections – Lawrence Denny Lindsley Photographs Includes 66 images (ca. 1907–1950) of Lake Chelan and nearby settlements.
- Schoolbus plunges into Lake Chelan, killing 15 students and the driver, on November 26, 1945.
- Emily von Jentzen swims Lake Chelan