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 M. Difato on April 4, 2021 at 7:26pm

Florida expands evacuations ahead of possible 'catastrophic' 340M gallon breach at phosphate plant

Breach could result in 20-foot wall of water sweeping through surrounding area, officials say

Manatee County in Florida has expanded evacuations ahead of a possible "catastrophic failure" at a former phosphate processing plant's waterwater pond that could result in devastating flooding.

Gov. Ron DeSantis spoke at a press conference in Piney Point on Sunday, stressing that the state is responding aggressively to the crisis.

"Public health and safety is the top priority," DeSantis said. 

The focus is on an abandoned Piney Point fertilizer plant reservoir, which contains hundreds of millions of gallons of wastewater and has begun to leak amid a break in a containment wall. 

DeSantis said workers are currently pumping out 33 million gallons of wastewater per day, and he stressed that the water being discharged to Port Manatee is being tested and "is not radioactive."

LEAK AT WASTEWATER POND PROMPTS EVACUATION IN FLORIDA

Should a catastrophic failure occur, the reservoir could dump around 340 million gallons of wastewater into the surrounding area, which some experts have calculated could result in a 20-foot high wave of water sweeping through an area with hundreds of homes.

 This photo shows a reservoir near the old Piney Point phosphate mine, Saturday, April 3, 2021 in Bradenton, Fla. Florida Gov. Ron DeSantis declared a state of emergency Saturday after a significant leak at a large pond of wastewater threatened to flood roads and burst a system that stores polluted waters. The pond where the leak was discovered is at the old Piney Point phosphate mine, sitting in a stack of phosphogypsum, a waste product from manufacturing fertilizer that is radioactive. (Tiffany Tompkins/The Bradenton Herald via AP) ((Tiffany Tompkins/The Bradenton Herald via AP))

DeSantis issued an evacuation order on Saturday for a half-mile radius around the plant, which has so far led to evacuations for 316 homes.

The state is working with the Red Cross to provide shelter and resources for the displaced families, many of which are staying in local hotels.

DeSantis urged anyone looking for shelter to contact Manatee County authorities.

Authorities began controlled discharges on March 31 in hopes of preventing a breach and subsequent flooding. DeSantis claimed that the water has been tested and monitored, and that the water currently meets standards for dissolved oxygen, salinity and PH.

The state is also bringing in additional equipment to double the effort to dump more water out of the reservoir and into surrounding waterways.

The Florida National Guard is airdropping pumps that will fit over the plant’s stacks to speed up the pumping process, which currently utilizes 10 vacuum trucks in addition to 20 current pumps..."

Published April 4, 2021: https://www.foxnews.com/us/florida-evacuations-manatee-county-piney...

Comment by KM on March 10, 2021 at 4:42am

Source

Dam breach on Maui, Hawaii prompts emergency evacuations (videos)

Heavy rainfall in Hawaii has caused a dam to breach on the island of Maui.

maui dam breach, maui dam breach video, maui dam breach march 2021, maui dam breach march 8 2021
Dam breach in Maui, Hawaii on March 8, 2021. 

The County of Maui said a breach of the Kaupakalua Dam near Haiku was reported during the afternoon of March 8, 2021.

Emergency evacuations were ordered for everyone downstream of the reservoir dam in the Haiku area makai of Kaupakalua Road. People near heavily flowing streams were advised to evacuate or seek higher ground immediately.” Evacuation centres have been opened in local public buildings.

The Maui Fire Department said it received more than a dozen calls for help from residents who were trapped in their homes because of rising flood waters.

Maui County Mayor Michael Victorino surveyed the flooding in Haiku and reported that Kaupakalua Road was impassable in some areas and approximately a half dozen homes were heavily damaged or destroyed. There is also evidence of landslides. He urged residents to remain vigilant.

For the safety of evacuees and emergency personnel, I urge everyone to stay away from the Haiku area,” said Mayor Michael Victorino. “MPD and Maui Fire and Rescue personnel are assisting those needing help. Please stay home, off the road, and away from streams, rivers, culverts and drainage ditches even if they are currently dry. Visitors and residents should understand this is life-threatening flooding.

All Maui County parks on the island of Maui are closed due to heavy rain and flooding and will remained closed until further notice.

National Weather Service (NWS) Honolulu said “radar indicated locally heavy rain over East Maui, from Haiku to Hana to Kaupo, which includes the area upslope of the Kaupakalua Dam. Rain was falling at a rate of 1 to 2 inches per hour and area streams are on the rise.” Heavy rainfall has affected other areas of the state and NWS has issued flash-flood warnings.

In a statement, Hawaii Governor David Ige said, “the state is assisting Maui County as residents and visitors downstream of the Kaupakalua Dam evacuate at this hour. The health and safety of our residents and visitors in Haiku and surrounding areas remain our top priority as heavy rain is posing a potential threat to the dam. The state and county are closely monitoring the situation. Please stay out of the area until the danger has passed and continue to monitor local media for updates.

The Kaupakalua Dam is an earthen dam constructed in 1885 and one of the oldest agricultural dams on Maui. It has a maximum storage capacity 68-million gallons of water and is 57-feet high and 400-feet long.

https://strangesounds.org/2021/03/dam-breach-maui-hawaii-videos-eme...

Comment by Starr DiGiacomo on October 4, 2020 at 10:00pm

https://www.watoday.com.au/national/victoria/potential-catastrophic...

'Potential catastrophic failure': Torquay residents face night away from home over dam threat

October 3 2020

More than a hundred Torquay residents will spend another night away from their homes as authorities pump the equivalent of 90 Olympic-sized pools of water out of a dam to ensure it does not collapse.

Dozens of Surf Coast homes were evacuated in the early hours of Saturday morning after emergency crews assessed the leaking dam and found a "catastrophic" collapse could threaten lives and properties.

The crews worked through the night after the 180 megalitre irrigation dam near the intersection of Pin Tail Drive and Horseshoe Bend Road started leaking into nearby properties, the owners of which alerted the local council.

Concerns were first raised about 6pm on Friday when water appeared to come up through the ground on two nearby properties. By 1.30am on Saturday, emergency crews had woken more than 100 residents across 41 homes and asked them to leave immediately.

Ten CFA trunks were involved in pumping water out of the dam to reduce the pressure on the compromised wall. More than 100 emergency services workers were on site, including dam engineers trying to decipher the scope of the damage.

SES incident controller Alistair Drayton said the cause of the leak was unknown and residents would be able to return only once the consequences of a potential collapse were minimised.

He said six pumps were operating to remove about half of the 180 megalitres and reduce the dam level by about two metres. At that point, he said, authorities would be comfortable the dam is "very safe" and further investigation could be conducted into the leak source.

"It will take the water pressure off… This is about risk and consequence management," he told dozens of residents during a community meeting held virtually on Saturday afternoon.

Victoria Police Sergeant Peter Christo said there would be a 24/7 police presence in the area and officers would escort people to their homes if they needed emergency supplies like medicines.

"I just want to assure residents we are here to help them... Please come and speak to us," he said at the community forum.

"We want to get residents back to their home asap, but not until it is safe."

After staying up late to feed her seven-month-old baby, Alice O'Rourke got a knock on the door from the SES at 2am, who said she and her young family of four should leave.

"At first, it was more just a shock that someone was knocking on the door at that time of the morning. I was worried someone was trying to break in," she said.

"We didn’t know how serious it was, but when they said evacuate, we made the choice to leave straight away.

"We had no idea the dam could be dangerous. We quite often go for walks near there. I think everyone is just a bit shocked and not sure what’s going to happen."

Ms O'Rourke was advised on Saturday morning not to return to her home.

Resident Jessica Andrews said members of her family noticed water in their backyard and contacted the council. She said her family had discussed with authorities the possibility of digging up the backyard to help determine the source of the leak.

Surf Coast Shire Council chief executive Anne Howard told residents either the council or state government would pay for temporary accommodation locals did not have family or friends who could accommodate them.

SES south-west regional officer Ian Carlton said an initial trickle of water could have turned into a torrent.

"Initially it was only a trickle of water, but the dam where it was all coming from was the concern. Engineers did assessments on the consequences of a catastrophic failure, and it would have affected three blocks of houses," he said.

"It’s not an everyday occurrence, and when we’ve seen footage from overseas of dam failures, it’s not something to be taken lightly."

Comment by Starr DiGiacomo on September 26, 2020 at 8:44am

https://www.ntd.com/dam-collapses-in-northeast-china_511359.html

Dam Collapses in Northeast China

Sept. 25 2020

A major river in Northeast China has been struck by even more flooding. Heavy rains upstream have caused a dam to collapse—and the overflow has soaked 10,000 acres of crops.

Comment by Starr DiGiacomo on September 3, 2020 at 8:09am

https://www.mining.com/vale-reports-negative-safety-levels-in-3-dam...

Vale reports negative safety levels in 3 dams in Minas Gerais

Comment by Starr DiGiacomo on August 21, 2020 at 1:56am

https://www.dhakatribune.com/bangladesh/nation/2020/08/20/tidal-sur...

Tidal surge causes embankments to collapse, inundates villages in Khulna

Published at 06:20 pm August 20th, 2020

Around 50,000 people have been seriously affected by the sudden tidal surge inundating 12 villages in Koyra and Paikgachha

Due to active monsoon conditions, a strong tidal surge has given rise to the water levels of the Shibsa, Kapotakkho and Koyra rivers in Khulna, causing breaches in the protection embankments in the already disaster-stricken coastal district bordering the Bay of Bengal. 

Twelve villages in Koyra and Paikgachha upazila, which were already severely damaged by cyclone Amphan and recent floods this year, have once again been flooded by this tidal surge. 

As a result, around 50,000 people have been seriously affected in Kazi Para, Putihari, Harinkhola, Kashir Hat Khola, Ghatakhali, Koyra 2, Koyra 3, Gobra and Bedkashi under Koyra and Mazrabad, Bayerjhapa and Tengramari under Paikgachha.

Residents in Koyra said the Kapotakkho and Koyra rivers had been on a steady rise for the past few days. The rivers overflowed over the Ring Dam and flooded the upazila on Wednesday.

Meanwhile, a strong tidal surge in the Shibsha River breached the embankment and flooded Mazrabad, Bayerjhapa and Tengramari in Paikgachha the same day, prompting its residents to spend the whole night repairing the river embankment themselves.

It has been three months since the horrific cyclone Amphan wreaked havoc in Koyra and Paikgachha and its residents have not yet been able to return to normal life. As of Thursday, every house in these two upazilas was submerged in at least 3-4ft of floodwater.

Koyra Upazila Parishad Chairman Shafiqul Islam said the dams at Ghatakhali, Koira 2 and 3 had collapsed due to a sudden tidal surge, inundating nine villages. “Locals are working to repair the embankment to protect their homes.”

Koyra Upazila Nirbahi Officer Animesh Biswas said: “Necessary repairs will be possible on the affected embankments once the high tide recedes. For now, sandbags are being provided for voluntary embankment protection work.”

Meanwhile, due to high tides, the already dilapidated Wapda embankment in Bayerjhapa also collapsed, flooding a vast region in Mazrabad, Bayerjhapa and Tengramari on Wednesday.

As a result, at least 250 shrimp enclosures were washed away and 15,000 people were subjected to serious waterlogging issues.

Soladana Union Parishad Chairman SM Enamul Haque said that locals had worked till late Wednesday night and repaired the collapsed embankment in Bhangaharia.

Paikgachha Upazila Nirbahi Officer ABM Khalid Hossain Siddiqui was present at the spot and provided encouragement to the people.

Md Fariduddin, deputy assistant of the Khulna Water Development Board, said: “The dam had been repaired four times before by both administration and local efforts. But due to lack of sustainable repairs, the dam collapses repeatedly, causing tidal water to enter Paikgachha. Meanwhile, Tk3 lakh has been allocated for repairing the permanent dams.”

Paikgachha UNO ABM Khalid Hossain Siddiqui said: “The tidal water has stopped entering the affected areas since the embankment was repaired through local efforts on Wednesday night. Emergency measures will be undertaken to establish sustainable dams here.”

It has been three months since the horrific cyclone Amphan wreaked havoc in Koyra and Paikgachha and its residents have not yet been able to return to normal life. As of Thursday, every house in these two upazilas was submerged in at least 3-4ft of floodwater.

Koyra Upazila Parishad Chairman Shafiqul Islam said the dams at Ghatakhali, Koira 2 and 3 had collapsed due to a sudden tidal surge, inundating nine villages. “Locals are working to repair the embankment to protect their homes.”

Koyra Upazila Nirbahi Officer Animesh Biswas said: “Necessary repairs will be possible on the affected embankments once the high tide recedes. For now, sandbags are being provided for voluntary embankment protection work.”

Meanwhile, due to high tides, the already dilapidated Wapda embankment in Bayerjhapa also collapsed, flooding a vast region in Mazrabad, Bayerjhapa and Tengramari on Wednesday.

As a result, at least 250 shrimp enclosures were washed away and 15,000 people were subjected to serious waterlogging issues.

Soladana Union Parishad Chairman SM Enamul Haque said that locals had worked till late Wednesday night and repaired the collapsed embankment in Bhangaharia.

Paikgachha Upazila Nirbahi Officer ABM Khalid Hossain Siddiqui was present at the spot and provided encouragement to the people.

Md Fariduddin, deputy assistant of the Khulna Water Development Board, said: “The dam had been repaired four times before by both administration and local efforts. But due to lack of sustainable repairs, the dam collapses repeatedly, causing tidal water to enter Paikgachha. Meanwhile, Tk3 lakh has been allocated for repairing the permanent dams.”

Paikgachha UNO ABM Khalid Hossain Siddiqui said: “The tidal water has stopped entering the affected areas since the embankment was repaired through local efforts on Wednesday night. Emergency measures will be undertaken to establish sustainable dams here.”

Comment by Starr DiGiacomo on August 16, 2020 at 12:18am

https://www.newindianexpress.com/states/odisha/2020/aug/15/rain-tri...

Rain triggers check dam collapse

One injured after wall of a shop caves in due to heavy rain at Kamarguda in Chitrakonda.

15th August 2020 08:36 AM

MALKANGIRI: Incessant rains since the last few days continued on Friday disrupting normal life in the district.A six-metre high dam of the minor irrigation project at Patraput under Mathili block collapsed due to heavy rains. Floodwater submerged standing crops in nearly 30 acre of farmland on the downstream. Minor Irrigation Executive Engineer Sushil Sahu said efforts are on to repair the dam soon.

Similarly, four houses in Champajharan and Miliguda villages under Mathili were damaged due to rain. Communication was disrupted on Mathili road after an uprooted tree blocked vehicular movement on the day.Movement of vehicles was also disrupted on NH-326 between Malkangiri and Jeypore as rainwater flowed 3-4 feet over Pangam bridge. Till reports last came in, water was flowing over the bridges at MV-90 and MV-96 under Kalimela block and Kanyashram of Podia.

On Thursday night, one Kamala Pangi sustained injuries after the wall of a shop collapsed on her due to heavy rain at Kamarguda junction under Chitrakonda block. Kamala was sleeping inside the shop when the mishap took place. Her father Santosh Pangi urged the district administration for relief and Government assistance.

In the last 24 hours, the district received 490.4 mm rainfall. Chitrakonda block reported the highest rain of 130 mm followed by Korukonda (97 mm), Khairput (84 mm) and Podia (63.5).

Comment by Starr DiGiacomo on August 2, 2020 at 5:59am

https://headtopics.com/sg/hundreds-of-homes-destroyed-after-sudan-d...

'Hundreds' of homes destroyed after Sudan dam collapse

KHARTOUM (AFP) - Hundreds of homes were destroyed or flooded this week as a dam burst after heavy rain in Sudan 's Blue Nile state, a local official said on Saturday (Aug 1).. Read more at straitstimes.com.

The dam collapsed on Thursday in the district of Bout in the southeastern state,"destroying more than 600 homes and flooding others", Nousseiba Farouk told AFP by phone.Residents successfully evacuated their homes, she said.Local media said the dam held five million cubic metres of water, used for both agriculture and drinking.

"We don't yet have an exact idea of the damage because we have not been able to reach the flooded area," Farouk added.

another link:

https://africa.cgtn.com/2020/08/01/dam-collapse-destroys-600-houses...

Dam collapse destroys 600 houses in Sudan

A sudden collapse of a dam in Sudan’s Blue Nile State has destroyed 600 houses, local Sudanese media reported on Friday.

“Over 600 houses in the neighborhoods of Bout town in Blue Nile State have been destroyed due to a sudden collapse of Bout dam which is used to store around 5 million cubic meters of water coming from the valleys of Al-Angsana Mountains,” local media quoted Nusaiba Farouq Kalol, acting executive director of Al Tadamun locality in Sudan’s Blue Nile State, as saying.

“The water surrounded another 600 families in a neighbourhood, with no access to them as the water flooded the area from three directions,” she added.

The local official warned against a big wave of displacement in the area, noting that the Bout dam constitutes the backbone for the area where there is a large market and more than nine basic education schools.

Annually during June and July, Sudan witnesses waves of floods due to heavy rains.

On Thursday, Sudan meteorological authorities warned of medium to heavy rains, accompanied by high-speed winds on Friday that would continue until Saturday afternoon, in various parts of the country.

Comment by Starr DiGiacomo on July 25, 2020 at 7:21pm

https://news.abplive.com/uncut/off-the-record-with-pankaj-jha/bihar...

Bihar Flood: Large Scale Devastation In Gopalganj After Dam Collapse, Had To Vacate Many Villages | Bihar Uncut

Updated : 24 Jul 2020 09:55 PM (IST)
Bihar Flood Update: A dam built on the Gandak river in Gopalganj district collapsed this week. Many villages were washed off due to the floods caused by this collapse. Floods in Bihar is not a new phenomenon, it happens every year. Every year, floods cause huge losses to human lives and property alike. Governments announce flood relief funds every year. Some people receive these funds, while many don't. Post-floods, everything is devastated and dilapidated. Watch this report by ABP News' political editor, Pankaj Jha on the state of Bihar floods.
Comment by Juan F Martinez on July 24, 2020 at 4:19pm

Expert: Three Gorges Dam Could Collapse | NTD  | Three Gorges Dam is breaking apart. 7/23/2020

https://youtu.be/n6QyfrS7ARI

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