Dams at Risk: 65-Foot Crack in Washington State Dam

A large crack has been found in the Wanapum Dam on the Columbia River which supports the utility power supply to a major cluster of data centers in central Washington state.

 

65-Foot Crack Found in Washington State Dam (Feb 25)

The 2-inch-wide crack was found Thursday after divers were sent into the Columbia River because engineers detected a misalignment in a spillway on Wanapum Dam near the central Washington town of Vantage, said Tom Stredwick, a spokesman for the Grant County Public Utility District.

The Wanapum Dam generates more than 1,000 megawatts of electricity for the Grant County PUD, the utility that provides electricity to major data centers operated by Microsoft, Yahoo, Dell, Sabey Data Centers and Vantage Data Centers.

On February 25, dam officials noticed an irregular bowing of the dam near a section of a spillgate pier along the mile-long structure. Divers examined the area Thursday and discovered a two-inch wide crack running horizontally, located about 75 feet below the water’s surface. It runs the entire width of the 65-foot-wide pier.

The risk of a failure of the dam is high enough that the county has initiated an emergency plan. To relieve pressure on the dam, the water level is being lowered by 20 feet.

Source

 

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Owen Falls Dam in Uganda Falling Apart (Feb 28)
The Owen Falls dam in Jinja could cave in, if the cracks and damage to the dam are not repaired, an official of Eskom, the hydro power generation company, has said.

Huge cracks continue to develop in the walls and supporting pillars of the dam. Water continuously sips through the gaping holes, expanding the cracks and making the dam weaker by the day.

Source

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Lake Manatee Dam at Risk of Collapse (Feb 14)

The Lake Manatee Dam in Bradeton, Florida is in a "severely distressed state" because of erosion, engineering consultants have found, forcing county officials to take corrective actions.

Heavy rains over four or five days could compromise the Lake Manatee Dam, Manatee County government warned in a news release February 14.

As a precaution, workers have begun to lower the water level of the lake.

Engineers and officials are concerned that the dam's clay core may have been compromised.

Source

 

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Water Gushes over Crumbling Dam in Zimbabwe (Feb 9)

A dam on the Tokwe river in the Masvingo area of Zimbabwe is close to bursting as water from heavy rains finding its way through gaps in the uncompleted dam wall.

Construction of the Tokwe Mukorsi dam began in 1998 but stalled in 2008. The dam was due to be completed at the end of last year but the deadline has passed with construction still not finished. Pictures from the area show water gushing through breaks in the wall and a huge build up of water in the reservoir behind it. Villagers have been evacuated as quickly as possible, with around 4,000 people believed to be at risk should the dam burst.

According to the Daily News, the Zimbabwe Air Force is helping people evacuate. The Minister for Masvingo province is quoted as saying that the government is on high alert and "A helicopter from the AFZ has been airlifting some families who were marooned by the floods but we are not yet sure how many people are still marooned."

Source

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"All dams will break either during the pole shift or in the months leading up to the hour of the shift. Look at the structure of the dam! It assumes that rock holding both sides of the dam will remain in place and not move. Of course these sides will move. This is a subduction zone! There is mountain building and even where the mountains are not being pushed upward, they are moving from side to side. Some parts are more fluid than others, which are more resistant during any earthquake thrust, so there IS inevitably movement to the side. They will pull apart, slide forward or backwards, but in any case the water will find its way around the dam." 

ZetaTalk Chat Q&A: July 18, 2009

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Comment by Howard on August 6, 2014 at 2:54am

Courtesy of Corey Young:

Massive Mine Tailings Dam Failure in Southern BC (Aug 5)

Mount Polley mine tailings dam breach spills millions of cubic meter of wastewater into creeks and lakes, contaminating central B.C. river systems on Monday.

B.C.'s minister of energy and mines says he is devoting every appropriate resource to deal with the consequences of Monday's massive failure of a mine tailings dam in B.C.'s Central Interior.

Wastewater and tailings sediment from Imperial Metals's Mount Polley copper and gold mine near Likely, B.C., has contaminated several lakes, creeks and rivers in the Cariboo region, causing officials to evacuate local campgrounds and enact a number of water-use and drinking water bans.

Residents affected by the wastewater spill are worried about the impact on their health and the environment.

"The tailings pond is so full of chemicals. The water is green, fish floating.... It's sad," Lawna Bourassa said.

Bourassa's husband took photos and video of the debris in Quesnel Lake, the deepest lake in the province, which is located in the heart of the Cariboo Mountains.

"It's just really upsetting and we were just about to have the salmon run," she said.

The Likely, B.C., resident has been drinking bottled water since Monday, when officials announced a complete water ban for about 300 local residents.

The waterways affected by the ban, which earlier included Quesnel Lake, Polley Lake, Hazeltine Creek and Cariboo Creek, now also include the entire Quesnel and Cariboo river systems right up to the salmon-bearing Fraser River.

Authorities are asking people in the region to stop using water from both rivers.

Peggy Zorn lives on the Quesnel River and has a lodge in Likely, B.C., where she and her husband, Gary, own a tourism company.

"The devastation up the lake is unbelievable," Zorn said.

Zorn said her husband has seen some of it firsthand.

"Hazeltine Creek, you could jump across it, and now from what Gary was saying, it's about 150 feet wide. All that debris, the scar on the mountain now is incredible.

Zorn is concerned about the permanent damage to Quesnel Lake, describing the waterway as a pristine lake before the contamination.

"People are drawing their drinking water direct from the lake. That's how pure that water was," she said.

"We live in a rare interior rainforest and nature does reclaim things here quickly, but I don't see that happening [here]."

Zorn said she would like to see more stringent regulations on tailings ponds.

"This dam — the knowledge the experience, the engineers they have — this should never ever have happened to start with."

The B.C. government is investigating how the mine's tailings pond breached, spilling 10 billion litres of water and 4.5 million cubic metres of metals-laden fine sand into waterways.

Imperial Metals president Brian Kynoch and Cariboo Regional District chair Al Richmond held a press conference on Tuesday afternoon, although it was plagued by technical problems.

Sources

http://www.cbc.ca/news/canada/british-columbia/mount-polley-mine-ta...

http://www.cbc.ca/news/technology/tailings-ponds-for-mining-and-oil...

http://www.vancouversun.com/health/Spilled+waste+water+Mount+Polley...

Comment by Howard on August 4, 2014 at 9:35pm

Cracked Dam Prompts Flash Flood Warning Near San Francisco (Aug 3)

A flash flood warning was issued for parts of Tuolumne County due to a massive crack in the Twain Harte Dam.

Water was reportedly seen leaking through cracks at the dam by an operator late Sunday morning. The crack is estimated to be 150-feet deep by 150-feet long.

The flash flood warning was issued for areas along Sullivan Creek, southwest of the town of Twain Harte. The warning was later canceled after officials determined there was not an eminent threat of failure of the dam

Steve Wasson and his family were enjoying the start of their vacation on a large rock next to the dam when they felt a violent shake.

A fissure started moving from the back of the rock forward and we all started scrambling and screaming to get off the rock,” Wasson said.

Engineers from Sacramento have been called to the dam. The lake was full at about 143 acre-feet when the crack was first reported. 

The water level in the lake is now being reduced by 10 feet to lower the lake below the leak, according to Tuolumne County officials. This means that about 2,000 gallons of water per minute is being let out from the lake.

“We have put a reverse 911, letting citizens know below this mark down the river to be aware of the increased water flow,” said Tuolumne County Sheriff Jim Mele.

Twain Harte Lake will be closed for the rest of the summer and beyond, according to Lake Manager Dennis Wyckoff.

Sources

http://sacramento.cbslocal.com/2014/08/03/dam-leak-prompts-flash-fl...

http://www.twainharte.com/2014/08/03/twain-harte-lake-to-close-for-...

http://www.twainharte.com/2014/08/03/rock-cracks-twain-harte-lake-c...

Comment by Starr DiGiacomo on August 3, 2014 at 12:21am

Raw Video: Heavy Rains Cause Iowa Dam Break

Uploaded on Jul 24, 2010

In eastern Iowa, the Lake Delhi dam failed as rising floodwater from the Maquoketa River ate a 30-foot-wide hole in the earthen dam, causing water to drop 45 feet to the river below and threatening the small town of Hopkinton. (July 24)

https://www.youtube.com/watch?v=0udToKp6COY

Comment by Starr DiGiacomo on July 12, 2014 at 2:37am

http://www.northbengaltimesbd.com/?p=22638

200 Meters Stretch of China Cross Dam Collapse in Sirajganj

Comment by Starr DiGiacomo on July 12, 2014 at 2:31am

http://news.ninemsn.com.au/world/2014/07/12/07/19/dam-collapse-enda...

Dam collapse endangers Bolivia river

7:06am July 12, 2014
A dam in a Bolivian mining town that helped keep dangerous pollutants out of a major regional waterway has burst, sparking an environmental emergency, officials say.

"The lower part of the dam broke - there was some sort of explosion - which caused the water to rush into the Pilcomayo," said Jose Luis Rios, a local prosecutor, speaking to Bolivian radio about the accident, which he said took place on Thursday.

The private Santiago Apostol mine extracts lead, silver and zinc.

Rios said authorities are investigating what caused the dam at the mine to fail.

Officials said residue from the facility risks despoiling the Pilcomayo River, which runs through Bolivia to Argentina and Paraguay.

The Pilcomayo also flows into the Paraguay River, one of South America's most important waterways.

 

Comment by Howard on June 10, 2014 at 1:38am

What was originally reported as a burst dam is now being called a "dam surge" and has killed 4 students with 24 presumed dead in northern India.

Dam Surge Sweeps Away Students in Northern India - June 9

Rescuers in rafts and boats were searching a Himalayan river Monday for dozens of Indian students swept away when a dam released a rush of water without warning, and police said four bodies had been found.

The 25 students from the southern city of Hyderabad had been taking photographs Sunday evening on the banks of the Beas River when they were hit by the rush of water from the Larji hydropower station near the mountain resort town of Manali in Himachal Pradesh.

They had been part of a larger field trip of some 48 students spending 10 days near Manali. Some students at the river managed to scramble to safety.

"We saw a wall of water hit those who were on the banks. They fell flat and disappeared under the waves," a student identified only as Sumiran told The Indian Express newspaper.

Kiran Kumar, a professor who was accompanying the students, said he saw the water level rising and told the students to step back from the bank. But "within one or two seconds, the water level increased all of a sudden. Some of the students were washed away right in front of me," he told the AP.

Shortage of boats and divers hamper rescue

Police in Manali said four bodies were recovered Monday morning after the search resumed at dawn. They said a shortage of boats and divers was hampering the operation.

"Officials there are fearing the chances of finding survivors were slim," said Anurag Sharma, police director general in Telangana state, where Hyderabad is located.

Himachal Pradesh Chief Minister Virbhadra Singh demanded the dam's engineer be suspended while the incident is investigated.

Telangana's government on Monday sent police officials and parents of the missing to the search site, 530 kilometres north of New Delhi.

Anxious friends and relatives gathered at Hyderabad's Vigyan Jyothi Institute of Engineering and Technology waiting for news of the missing.

Sources

http://www.cbc.ca/news/world/india-dam-release-kills-at-least-4-stu...

http://www.cnn.com/2014/06/09/world/asia/india-dam-surge-students/

Comment by Starr DiGiacomo on May 20, 2014 at 8:15am

http://www.myfoxatlanta.com/story/25556998/allatoona-dam-fire#axzz3...

Fire erupts at Allatoona Dam

Posted: May 19, 2014 4:56 PM EDT Updated: May 19, 2014 6:44 PM EDT
Firefighters battled a blaze at the Allatoona Dam in Cartersville Monday afternoon.

According to officials, a power outage was scheduled Monday morning for repairs and when the system was re-energized there was a problem with a circuit breaker.

The U.S. Corp. of Engineers tells FOX 5 everyone was evacuated safely and there are no reports of any injuries. 

Comment by Starr DiGiacomo on May 18, 2014 at 12:15am

http://www.dhakatribune.com/bangladesh/2014/may/17/ichamati-dam-col...

Ichamati dam collapse maroons farmlands, fish farms - May 17

Vast tracts of arabale land and some 20 fish farms were inundated when the I3 cross dam of the Water Development Board on Ichamati river collapsed at Jagannathpur Telkupi area of Bhulbaria union in Pabna’s Sathia upazila on Thursday night.   

Upazila administration and Water Development Board officials visited the scene yesterday morning.

Affected farmers said some influential and pro-Awami League locals, including Moyen Uddin, Mostafa Mollah, Tofaz Uddin, Makbul Hossain, Abdus Samad and Ranju Mridha, leased a river that had run dry near the dam, turned it into a pond and had been farming fish. They would supply water to the pond illegally using pipe placed under the dam.

The excessive flow of water caused the dam to collapse when water was being supplied on Thursday night. Several hundred bighas of cultivable land of nearby villages, including Sreepur, Shibpur, Dapunia, Madhabpur and Gurubashi, and at least 20 fish farms were completely submerged by the water.

Bhulbaria union Chairman Abdul Aziz Master said several hundred farmers were affected in the incident.

Sathia Upazila Nirbahi Officer Shafiqul Islam said he had visited the place and action would be taken against those responsible for collapse of the dam. 

Local Water Development Board office Executive Engineer Kabibur Rahman said some people cut the dam to supply water to the pond but the gush of water caused a large part of the dam to break.

We had informed the higher authorities and had lodged general diary against the perpetrators, he said.  

The executive engineer said the dam could not be repaired immediately as it was the end of the irrigation season and there was not enough harvest in the fields. A new dam would be built after receiving allocation in the new budget, he said.

Kabibur, however, claimed collapse of the dam did not affect farmers heavily.

Comment by Howard on April 12, 2014 at 3:47am

Defects In Africa’s Biggest Dam Could Spell Disaster (Apr 9)
Severe structural faults have been identified in the Kariba Dam, located in the Kariba Gorge of the Zambezi River basin, which experts warn could lead to a catastrophic humanitarian disaster.

A failure in the dam could unleash 180 billion tonnes of water from the continent’s largest man-made lake, engulfing Zambia’s capital city of Lusaka, flooding the neighbouring Mozambique and Malawi and threatening the lives of more than 3.5 million people.

A collapse would cause electricity blackouts across southern Africa.

Defects at the dam have also led to concerns about the risk of earthquakes, because the structure sits at the southern end of the Rift Valley, a tectonically active area where there have been at least 20 tremors of a magnitude greater than five.

Source

http://sourceable.net/defects-in-africas-biggest-dam-could-spell-di...

Comment by Howard on April 1, 2014 at 4:27pm

Dam Bursts in Kazakhstan Killing 5 (Mar 31)

 

The dam holding the Kokpekty Water Storage Basin burst at 1:30 at night on March 31. The overflowing water flooded 300 houses out of 810 in the nearby village. The mass of the spilling was was so large that the flood water reached as high as 1.5-1.8 meters in the village. The water level started subsiding only at 2:45 a.m. on March 31.

Dozens of off-road vehicles, 124 people and 15 units of special rescue equipment were immediately dispatched into the area along with disaster medicine crews and a regiment of Civil Defense Corps of the Emergencies Ministry of Kazakhstan to evacuate people from the flooded village.

400 residents of Kokpekty village have been evacuated and five dead bodies were discovered during the rescue operations.

More than 300 of various cattle, almost 150 chicken and other poultry and 24 dogs died in the flood.

Sources

http://en.tengrinews.kz/disasters/Dike-scoured-near-Karaganda-4-kil...

http://en.tengrinews.kz/disasters/Number-of-victims-of-dike-burst-n...

http://en.tengrinews.kz/disasters/Flood-victims-give-account-of-dis...

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