What are the 2 biggest lakes in Colorado?

Largest Lakes and Reservoirs in Colorado
  1. Navajo Reservoir – Arboles (1,708,600 volume; 15,600 acres) ...
  2. Blue Mesa Reservoir – Gunnison (829,500 volume; 9,180 acres) ...
  3. John Martin Reservoir – Hasty (603,500 volume; 11,650 acres) ...
  4. Lake Granby – Granby (539,758 volume; 7,256 acres)




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The largest reservoir entirely contained in Colorado is Blue Mesa Reservoir, with a capacity of 829,500 acre·ft (1.0 billion m3).

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The deepest lake in Colorado is Grand Lake, with a depth of 389 feet. Other deep lakes in Colorado are Turquoise, Twin Lake Reservoir, Pueblo, Granby, and San Cristobal lakes. Colorado lakes are known for being clear and visitors can enjoy fishing, beautiful, idyllic views, and activities.

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Only one, Grand Lake, is natural. Farthest downstream is Granby Reservoir, which is Colorado's third largest, capable of holding 539,758 acre-feet of water during runoff of spring and early summer. This compares to Ruedi Reservoir's 102,373 acre-feet and Dillon's 257,304 acre-feet.

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Lake Powell Water Levels Since the summer of 2022, water levels in Lake Powell have been steadily declining. Water levels are now at 3,524 feet above sea level, just 24 percent of its full storage capacity. The reservoir reached record low levels in April 2022, dropping to 3,519 feet above sea level.

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Top 10 States with the Most Lakes
  • #1: Alaska Lakes (3,000,000) ...
  • #2: Wisconsin Lakes (15,000) ...
  • #3: Minnesota Lakes (11,842) ...
  • #4: Michigan Lakes (11,000) ...
  • #5: Washington Lakes (8,000) ...
  • #6: New York Lakes (7,600) ...
  • #7: Florida Lakes (7,500) ...
  • #8: Texas Lakes (6,700)


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The clearest lake in Colorado is Columbine Lake, located in the San Juan National Forest near Silverton. The lake is so clear due to its alpine location, meaning it has a short warm season so natural material such as algae does not grow well in the water.

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At 1,943 feet (592 meters), Crater Lake is the deepest lake in the United States and one of the deepest in the world. The depths were first explored thoroughly in 1886 by a party from the U.S. Geological Survey.

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Lake George, known as the “Queen of American Lakes,” is 32 miles long and widely considered one of the country's most beautiful and cleanest lakes. Each year, the deep blue waters of Lake George, located in the southern Adirondack State Park, attract over 50,000 summer tourists.

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Lake Michigan, the third largest by surface area (22,300 square miles) and second largest by volume (1,180 cubic miles), is the only Great Lake located entirely within the United States.

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The Great Lakes are, from west to east: Superior, Michigan, Huron, Erie and Ontario.

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What happens if Lake Mead dries up forever? If Lake Mead were to run out of water, the Hoover Dam would no longer be able to generate power or provide water to surrounding cities and farms. The Colorado River would essentially stop flowing, and the Southwest would be in a major water crisis.

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