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What happens if Lake Okeechobee floods?

The flood will have a devastating impact on businesses, families and Florida's famous Everglades, which would suffer massive environmental damage. The lake sediment contains decades worth of chemical runoff from local farms.



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“The Storm of 1928” pushes water out of Lake Okeechobee. Several thousand people drown in the small farming communities bordering its southern rim. Wind tides on the lake cause such deadly overflows that the state forms the Okeechobee Drainage District to prevent future destruction.

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Toxic algae fed by agricultural fertilizers spread across the wide, shallow lake, which is the largest in the Southeast United States. The algae poisons the air, and seasonal rains threaten to swell the lake and disperse the contaminated water toward popular beaches.

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About 2,500 acres of estuaries are polluted, accounting for 99% of the total assessed. A big driverof that is Lake Okeechobee, which covers about 450,000 square acres and has been polluted by decades of agricultural and stormwater runoff.

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Many years of high water levels in the Lake made the Dike prone to “piping,” a leak that can lead to collapse. Erosion and Dike failure can also occur from water overtopping the Dike during major storm events. On a scale of Dam Safety Action Classification, the Dike is identified at Level 1 on a scale of 1-5.

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The lake, at 730 square miles and an average depth of only 10 feet, begins to flood the surrounding communities. Eventually, much of South Florida will be inundated. U.S. highways 441 and 98, and state roads 715 and 80 are destroyed by the slow-moving water.

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Visiting Lake Okeechobee is worth it for many folks interested in fishing, nature, hiking, and other outdoor activities. It is not, however, an experience for those who wish to go swimming, wading, or otherwise come into contact with the water. The alligators alone make the lake a dangerous spot.

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However, the lake's level began dropping soon after and by July 2007, it had dropped more than 4 feet (1.2 m) to its all-time low of 8.82 feet (2.69 m).

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The Florida Department of Health advises against it, according to its website. Fish tested from water with blue-green algae show that cyanotoxins don't accumulate much in the edible parts — muscle or fillet — of fish, but can in other organs, its website says. The safest choice is to not harvest or eat these fish.

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The Florida Department of Health advises against it, according to its website. Fish tested from water with blue-green algae show that cyanotoxins don't accumulate much in the edible parts — muscle or fillet — of fish, but can in other organs, its website says. The safest choice is to not harvest or eat these fish.

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The Okeechobee Utility Authority usually pulls 2.5 million gallons per day from the lake. They can also pull from the Rim Canal nearby as a backup option. In about 15 to 20 minutes, raw lake water is drinkable.

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Downriver towns and major cities would see the most damage, in the event of the dam's physical collapse. Water flows would engulf many towns and growing cities around Mohave county, including Laughlin, Nevada; Needles, California; Lake Havasu, Arizona; and even as far south as Yuma, Arizona, and San Luis Rey, Colorado.

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