Just How Deep Is the Deepest Lake in Colorado?

Colorado is a land with thousands of lakes. From the plains to the Rocky Mountains, Coloradans love visiting our lakes and reservoirs for recreational activities and to observe wildlife.

If you wanted to find Colorado's largest lake you would head to the Blue Mesa Reservoir in Gunnison County. If you are looking for Colorado's largest and deepest natural lake, that takes us in a different direction.

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Where Is Colorado's Deepest Natural Lake

Colorado's deepest natural lake is located in Grand County, Colorado, and is known as Grand Lake. The lake stretches over a mile and a half in length and is one mile wide. Grand Lake offers 507 surface acres for boating, swimming, and fishing.

History of Grand Lake

European hunting parties reached the area of Grand Lake in the mid-1800s. They built cabins along the lake shore and hired mountain guides to help them find game to hunt. The town of Grand Lake was established in 1867. By 1870, silver was discovered in the lakes and rivers around the lake, which helped bring even more people to the area.

How Deep Is Grand Lake?

Grand Lake reaches a maximum depth of almost 400 feet (389 feet). That's deep enough to submerge Denver's Daniels & Fisher Tower and Colorado's Bishop's Castle. Not only is Grand Lake Colorado's deepest lake, but it's also the largest natural lake found in the state. Colorado's second-deepest lake is Lake Grandby, which follows Grand Lake with a depth of 221 feet.