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 Starr DiGiacomo on August 31, 2018 at 4:47am

https://www.france24.com/en/20180830-myanmar-flooding-thousands-fle...

Thousands flee homes in Myanmar as dam breach floods 85 villages

https://www.youtube.com/watch?v=qXxDKAASMkI


Latest update : 2018-08-30


As many as 85 villages were flooded in Myanmar after a dam failed, unleashing waters that blocked a major highway and forced more than 63,000 people from their homes, a state-run newspaper said on Thursday.

The disaster spotlights safety concerns about dams in Southeast Asia after last month’s collapse of a hydroelectric dam in neighbouring Laos that displaced thousands of people and killed at least 27.

Firefighters, troops and officials launched a desperate rescue effort on Wednesday after the spillway of an irrigation dam burst at Swar creek in central Myanmar, sending a torrent of water through villages and the nearby towns of Swar and Yedashe.

Flooding at the dam site has receded, Zaw Lwin Tun, the deputy director general of the Irrigation and Water Utilization Management Department, told the Global New Light of Myanmar newspaper.

"

The collapse is caused by the damaged spillway,” the paper quoted him as saying. “The dam is in good condition.”

The ruptured spillway had flooded 85 villages, affecting more than 63,000 people and submerging a section of highway, the paper added.

Days earlier, authorities had given the all-clear to the dam, which can hold 216,350 acre-feet of water, despite residents’ concerns about overspill, state-run media have said.

Traffic between Myanmar’s major cities of Yangon and Mandalay and the capital, Naypyitaw, was disrupted after the flooding damaged a bridge on the highway linking them.

Comment by Starr DiGiacomo on August 24, 2018 at 5:58am

https://www.thenewsminute.com/article/7-shutters-mukkombu-dam-washe...

7 shutters of Mukkombu dam washed away: Alert sounded in downstream areas

A sudden increase in the Kollidam River resulted in the shutters being washed away, but officials say the nearby areas aren’t in immediate danger.
Thursday, August 23, 2018 - 09:22

A portion of the Mukkombu dam near Trichy was washed away on Wednesday evening. According to reports, at least seven shutters of the regulator across Cauvery River was washed away along with the piers due to a sudden increase in the Kollidam River’s water flow. However, the officials claim that there is no immediate danger to the surrounding areas.

Officers from the Public Works Department (PWD) attribute the cause to the heavy flow of water during the heavy rainfall period. They have also reportedly sounded an alert in the downstream areas of the river.

In the past few weeks, the Cauvery River has been receiving around 2 lakh cusecs of water from Karnataka due to the heavy rainfall in the catchment areas of Krishnarajasagara and Kabini dam.

The Kollidam River is essentially a flood carrier and begins from the Upper Anicut. The Upper Anicut is an important structure that was built to divert surplus waters into the river which will ultimately drain into sea.

With the heavy discharge into the Cauvery River from Mettur dam, over 1.50 lakh cusecs of water got diverted into the Kollidam from the Upper Anicut for more than three days last week, as per reports.

A few days back, a portion of the old road bridge across Kollidam River had collapsed owing to heavy water flow. As per reports, a portion of the pier of the Kollidam River’s old steel bridge developed cracks and started to cave in. The main reason for the bridge to collapse was the fissures in the 18th pier which broke and vanished inside the waters.

The Tamil Nadu State Disaster Management Authority had also claimed that there was no danger due to the collapse and that people living in and around the area need not panic.

Comment by Starr DiGiacomo on August 17, 2018 at 6:47am

https://kfor.com/2018/08/15/officials-prepare-for-dam-failure-at-fa...

Officials prepare for dam failure at Falcon Lake

Comment by Starr DiGiacomo on August 3, 2018 at 7:49am

https://www.accuweather.com/en/weather-news/breaking-potential-coll...

BREAKING: Potential College Lake Dam failure spurs evacuations in Lynchburg, Virginia

AccuWeather meteorologist
August 03, 2018, 12:53:38 AM EDT

College Lake Dam outside Lynchburg, Virginia is reportedly overflowing and on the brink of failure due to recently heavy rainfall. If the dam fails, portions of Lynchburg would reportedly flood within minutes.

Lynchburg, Virginia is in the Blue Ridge Mountains, about 50 miles east of Roanoke.

"Lynchburg has received 1.35” of rain so far on Thursday and 1.64” so far this month," AccuWeather Meteorologist Brett Rathbun said

However, upstream rainfall can also contribute to rising water levels.

"3 to 6 inches of rain has fallen across the area since Sunday afternoon with the heaviest falling in the towns of Timberlake and Forest," Rathbun said.

fb image Lynchburg dam 8/3

Flooding at the University of Lynchburg on Aug. 3, 2018. Facebook/ Joni L Organ

Residents of threatened areas are being asked to evacuate. According to the National Weather Service, water levels in Lynchburg could reach 17 feet in just 7 minutes if the dam breaks, swiftly inundating homes and businesses.

"More rain is expected across the area through Friday which can keep the dam failure risk high," Rathbun said.

Static Friday Friday Night Downpours 3 pm

Until a dry spell in the weather pattern occurs or the water can be safely released, dam failure will continue to be a threat.

Anyone living in low lying areas by the dam should seek higher ground immediately, even if official evacuations are not ordered.

The Lynchburg Sheriff's Office has opened an area auditorium for evacuees, including pets, to spend the night.

Comment by Starr DiGiacomo on July 25, 2018 at 3:19am

https://www.accuweather.com/en/weather-news/breaking-hundreds-missi...

Hundreds missing following dam collapse in southern Laos

July 24, 2018, 9:10:00 AM EDT


The Xepian-XE Nam Noy hydropower dam, located in Attapeu province in southern Laos, failed late Monday, sending torrents of water rushing into the Xe-Pian River.

Recent heavy rainfall may have influenced the dam failure as the region has endured frequent downpours in recent weeks.

The wet season in southern Laos runs from June into early October when roughly 1,500 mm (60 inches) of rain falls across the region.

Villagers take refuge on a rooftop above flood waters from a collapsed dam in the Attapeu district of southeastern Laos, Tuesday, July 24, 2018. (Attapeu Today via AP)


Quickly rising water inundated at least six villages and has damaged or destroyed more than 1,000 homes and affecting more than 6,000 people, according to the Associated Press.

Fatalities have been confirmed, however the total number of deaths remains unclear as hundreds of people are still missing as entire villages remain submerged in meters of floodwater.

Daily rain and thunderstorms are expected throughout southern Laos each day into this weekend. Downpours can lead to additional flooding problems across the region.

The dam failure initialized from a saddle dam, which is used to store additional water beyond what is supported by the main dam.

Construction on the dam began in 2013 and was scheduled to be completed in 2019.

Comment by Starr DiGiacomo on June 19, 2018 at 4:47am

http://kstp.com/weather/national-weather-service-northern-wisconsin...

Northern Wisconsin Dam Fails, Walker Issues State of Emergency in the Area

June 18, 2018 07:12 PM

Wisconsin Gov. Scott Walker issued a state of emergency Monday in northern Wisconsin following widespread damage after severe thunderstorms, including the failure of a dam on the Tamarack River. 

The National Weather Service reported around 4 p.m. that the Radigan Flowage Dam in Douglas County had likely broken. Because of the break, a flash flood warning was issued in southwest Douglas County. A flood warning was issued for both Douglas and Ashland counties. 

The NWS reported that bridges downstream from the dam have flooded. 

Locations that are likely to be impacted include Town Road T west of Dairyland, Swedish Highway at the Tamarack River, Highway T west of Cozy Corner and Markville Road east of Markville. 

The NWS urges drivers who encounter flooded roadways to report it to local law enforcement and turn around. 

On Monday, Walker issued a state of emergency for Ashland, Bayfield, Burnett, Douglas and Iron counties. The state of emergency comes after severe thunderstorms caused downed trees and power lines, mudslides and flash flooding. 

Comment by Starr DiGiacomo on May 30, 2018 at 5:39pm

http://www.newsweek.com/lake-tahoma-dam-latest-evacuations-north-ca...

Lake Tahoma Dam: Latest on Evacuations in North Carolina Amid Danger of Failure

May 30 2018

Emergency authorities in McDowell county, North Carolina have issued evacuation orders to thousands of residents as heavy flash flooding and landslides put the Lake Tahoma Dam at risk of failure.

The National Weather Service’s Greenville - Spartanburg station in South Carolina sent out a post saying that a landslide “has compromised the integrity of Lake Tahoma Dam” and called on those affected by mandatory evacuations to follow the orders. Spilling around the sides of the dam had already been reported.

“MANDATORY EVACUATIONS underway from the Dam at Lake Shore Dr to Lake Tahoma Rd (NC 80) to the confluence of the Catawba River near Resistoflex Rd and Riverside Park,” the service tweeted, “ACT NOW TO PRESERVE YOUR LIFE!”

McDowell County’s emergency management service wrote in a Facebook post that western and central parts of the county were seeing flooding and landslides. In an emergency message, the service said that the evacuation of areas below the lake were due to “recommendation from dam engineers.”

Engineers will be able to evaluate the dam during daylight hours, the message read. People in the affected communities can head to shelters at the YMCA of Marion, Glenwood Baptist Church and Old Fort Baptist Church.

Comment by Starr DiGiacomo on May 21, 2018 at 4:44am

https://www.youtube.com/watch?v=lzR0cKUn-Zk

Government issues evacuation alert following the overflow at Masinga dam

Move away from Masinga dam, downstream dwellers ordered

Published on May 16, 2018
Onto the ongoing heavy rains now and our reporter George Maringa now tells us that Masinga dam is now full to capacity and the waters have now started spilling over. This comes just a day after the government issued an alert for people living downstream to move to higher areas for fear of heavy flooding.
Comment by Starr DiGiacomo on May 17, 2018 at 4:11am

https://www.theguardian.com/world/2018/may/16/colombia-tens-of-thou...


Colombia: tens of thousands ordered to evacuate after floods at dam

600 people already left homeless after heavy floods at hydroelectric dam project, with another wave of flooding feared


The dam of the Hydroituango Hydroelctric Project, on the Cauca river, near Ituango municipality in Colombia on 12 May 2018. The dam of the Hidroituango Hydroelctric Project, on the Cauca river, near Ituango municipality in Colombia on 12 May 2018. Photograph: Joaquin Sarmiento/AFP/Getty ImagesTens of thousands of people have been ordered to evacuate their homes in western Colombia after heavy floods at Colombia’s largest hydroelectric dam project, which had already displaced hundreds over the weekend.The Hidroituango dam on the river Cauca was in the final stages of construction when a blocked tunnel was cleared on Saturday night, causing flooding downstream that swept through a riverside hamlet. Six hundred people were left homeless and two bridges, two schools and a health centre were destroyed.On Wednesday, authorities issued evacuation orders for eight municipalities downstream from the dam amid fears of another wave of flooding as heavy rains continue to batter the megaproject.The total number of inhabitants in the eight municipalities is believed to number up to 120,000. So far no deaths or missing people have been reported.

Videos circulating on local media show the harrowing scenes at the dam. One clip shows workers running from massive waves, while another shows flood water engulfing digging machinery.

“In the next few minutes, the flow of water from the Cauca river will be increased, downstream of the dam,” a text alert sent by EPM, the company building the dam, shortly after midday read. “People should go immediately to the meeting points.”

The latest emergency was triggered after an engine room at the dam reportedly collapsed. Colombia’s army, police and disaster management agency were dispatched to the site in the north-western Antioquia province. Red Cross personnel have been on the scene since Saturday.

“We are talking about people being displaced every hour,” Isabel Cristina Zuleta, an activist with Ríos Vivos, a local environmental organisation long opposed to the megaproject, told the Guardian from a Sabanalarga, a town upstream affected by floods over the weekend. “The high water pressure is causing landslides and floods upstream right now.”

“Communities are losing their way of life,” she said. “There’s no humanitarian assistance here, it’s total abandonment – there’s no shelters, no food, no anything.”

With water levels rising by the hour, Antioquia’s state governor, Luis Pérez Gutiérrez, who had previously brushed off the crisis as a “minor impasse” declared the situation a “public calamity” on Monday. Juan Manuel Santos called an emergency meeting with cabinet members and environmental agencies on Tuesday night.

The precise cause of the disaster is contentious. EPM’s manager, Jorge Londoño, told local media that “unpredictable geological conditions” had caused the tunnel to fill and then collapse over the weekend, while activists argue that it was caused by an accumulation of plant material left uncollected by the company. Swaths of surrounding dry tropical rainforest was deforested to clear space for the dam’s reservoir.

The crisis had been brewing since late April, when a blockage in the diversion tunnel was breached, causing water levels to rise both up- and downstream.

Several landslides, caused in part by heavy rain, led to further blockages throughout early May.

Authorities told residents that the emergency was under control, but many are now homeless.

“My house is still there but everything in it is destroyed,” said Richard Pasta, who lived 35 miles upstream from the dam and fled when water started to reach his doorstep last week. He is now in Sabanalarga, a nearby village further from the river, awaiting aid. “This was foreseeable, this is what happens when you mess with nature.”

Many locals in the region have long opposed the project, which has disrupted agriculture and fishing since the licence was granted to EPM in 2009.

The precise cause of the disaster is contentious. EPM’s manager, Jorge Londoño, told local media that “unpredictable geological conditions” had caused the tunnel to fill and then collapse over the weekend, while activists argue that it was caused by an accumulation of plant material left uncollected by the company. Swaths of surrounding dry tropical rainforest was deforested to clear space for the dam’s reservoir.

The crisis had been brewing since late April, when a blockage in the diversion tunnel was breached, causing water levels to rise both up- and downstream.

Several landslides, caused in part by heavy rain, led to further blockages throughout early May.

Authorities told residents that the emergency was under control, but many are now homeless.

“My house is still there but everything in it is destroyed,” said Richard Pasta, who lived 35 miles upstream from the dam and fled when water started to reach his doorstep last week. He is now in Sabanalarga, a nearby village further from the river, awaiting aid. “This was foreseeable, this is what happens when you mess with nature.”

Many locals in the region have long opposed the project, which has disrupted agriculture and fishing since the licence was granted to EPM in 2009.

Armed groups also operate in the region owing to its wealth of illegal gold mines and cocaine trafficking routes

Three community leaders from the area were shot dead by unknown assailants this month in two separate incidents. Two of the victims were members of the Ríos Vivos movement and had been campaigning for compensation for communities affected by the project.

Despite the controversies, the Hidroituango dam is being touted as a landmark project by the government and EPM – which is owned by the city of Medellín, 106 miles away. At full capacity the dam should be capable of generating an annual average of 13,930 gigawatt hours through its eight massive turbines. The project has received funding from IDB Invest, the private-sector branch of the Inter-American Development Bank.

The project is due to be fully operational by the end of the year. Around 11,000 people are working round the clock to drain the water and finish construction, the company said

Comment by Starr DiGiacomo on May 12, 2018 at 9:41pm

https://www.nation.co.ke/video/news/4146788-4557330-etap8tz/index.html

At least 20 people dead after walls of Patel Dam in Solai, Nakuru, collapse






1 day ago
Brygettes Ngana reports from nakuru where at least 20 people have been confirmed dead and hundreds of families displaced after the walls of Patel Dam in Solai broke down. Rongai police boss Japheth Kioko said 20 bodies had been recovered, with search and rescue operation ongoing.



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