50,000 people have 90 mins evacuate , Percy Quinn Dam expected to break, page 1

News just breaking.

The dam is expected to break due to rainfall from Issac.

www.nbc33tv.com...

Due to the imminent failure of the Lake Tangipahoa Dam in Percy Quinn State Park in Mississippi, near the town of McComb, up to 60,000 people downstream in Louisiana need to immediately evacuate, Tangipahoa Parish President Gordon Burgess told local television station WWLTV.

www.reuters.com...

THe news is flagging that a failure is imminent. Just found this stroy which seems to suggest it has already failed.

A potential dam break occurred at Percy Quinn Park on the Tangipahoa River, south of McComb, Miss.

www.accuweather.com...




www.flickr.com...

[Updated 12:10 p.m. ET] Pike County Civil Defense's latest Facebook update says: "Flood warning for the Tangipahoa River at Osyka. The dam at Lake Tangipahoa, better known as Percy Quin State Park, has been damaged by the torrential rains from Hurricane Isaac, but is intact, and is not leaking. We are monitoring it. All residents below the dam that live along the Tangipahoa River are being notified of the damage."

[Updated 12:07 p.m. ET] As of about 20 minutes ago, a National Guard helicopter was maintaining position over the dam to monitor its integrity, The Times-Picayune reports. As of 11:45 p.m., it was still holding, the New Orleans paper reported.

Source

This is mostly a earth dam, once there is one breach the rest is sure to follow.

Link

Lake Tangipahoa Dam Percy Dam is on the Tangipahoa River in Pike County, Mississippi and is used for recreation purposes. It was built in 1940. It has a normal surface area of 554 acres.

Lake Tangipahoa Dam Percy is of earthen construction. Its height is 34 feet with a length of 2300 feet. Maximum discharge is 1331 cubic feet per second. Its capacity is 8112 acre feet. Normal storage is 4841 acre feet. It drains an area of 56.8 square miles.

reply to post by camaro68ss

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You are completely wrong. Here are all of the things FEMA already has in place. Including plans.

Sorry, not gonna pull a George W. this time around.

live video

the Dam has not failed, it's only damaged.

reply to post by CALGARIAN

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Link says it drains into 56 square miles!!!! That's a lot of land to cover and I'm sure there is a town or two in that 56 miles. Not a major city or population area but still very very scary and dangerous!!

Originally posted by GuidedKill
This is mostly a earth dam, once there is one breach the rest is sure to follow.

Link

Lake Tangipahoa Dam Percy Dam is on the Tangipahoa River in Pike County, Mississippi and is used for recreation purposes. It was built in 1940. It has a normal surface area of 554 acres.

Lake Tangipahoa Dam Percy is of earthen construction. Its height is 34 feet with a length of 2300 feet. Maximum discharge is 1331 cubic feet per second. Its capacity is 8112 acre feet. Normal storage is 4841 acre feet. It drains an area of 56.8 square miles.

edit on 30-8-2012 by GuidedKill because: (no reason given)

The earthen dam, at the time I believe the largest earthen dam in the world at Oroville CA, was cracked during an earthquake but it did hold and was repaired. It was they said cracked all the way through near the bottom.

satelittle image of the dam and the water it is holding back

www.mobypicture.com...

reply to post by lacrimaererum

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THe news is flagging that a failure is imminent. Just found this stroy which seems to suggest it has already failed.

CNN reports same. Fifty to sixty thousand being evacuated.

www.google.org...

Civil Emergency Message for Tangipahoa Parish, LA

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Active for next 2 hours, 6 minutesLocation: Tangipahoa

Due to the dam failure, water levels on the Tangipahoa River near Kentwood are expected to rise to 17 feet quickly. This is a very similar level to what was experienced in 1990 and 1983. If you were impacted by the floods of 1990 or 1983, leave the area immediately for higher ground.

www.google.org...

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