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.




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.




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.





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."



"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." 

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Comment by M. Difato on August 25, 2015 at 8:34pm

Kiama, Australia 

“The dam failure warning system for Jerrara Dam has issued a Red Alert for areas downstream of the dam stating the failure is imminent,” 

Dam overflows, waters rise

The SES has issued an urgent evacuation notice to residents living downstream from Jerrara Dam, west of Kiama, as severe weather hits the NSW south coast.

The dam’s wall has shown signs of failing due to heavy rainfall in the area, the SES said today.

“The dam failure warning system for Jerrara Dam has issued a Red Alert for areas downstream of the dam stating the failure is imminent,” the SES said.

A school nearby has been closed. 

School shut as dam threatens

A NSW south coast public school has been closed as a nearby dam wall threatens to break, in the midst of severe weather pummelling the region.

The SES issued an urgent evacuation notice to residents living downstream from Jerrara Dam, west of Kiama, just before 10am on Tuesday.

The dam wall has shown signs of crumbling as heavy rain continues to fall in the area.

The nearby village of Minnamurra would bear the brunt of it if the dam wall collapses, with the SES advising parents with children at Minnamurra Public School to collect them.

A spokeswoman at Minnamurra Public School, which has 430 students, said it’s a precautionary measure.

If the dam busts, it will cause extremely dangerous flooding to areas including Mt Brandon Road, Jerrara Road and Jamberoo Road, an SES spokesman said.

“We do not know what is going to happen,” he said.

“The dam is currently being decommissioned and we are noticing the water is spilling over the top and is too risky, we are asking residents to evacuate immediately.” Lisa, who works at Jamberoo Bowling Club, said if the dam wall goes there is a concern that water will flood the Minnamurra River which will flood low-lying parts of Kiama Downs.

She said parents have been told “Please don’t panic, but please pick up children from school”.

“The biggest issue we have is for parents that work out of town and left this morning and can’t get back in ... like what happened a couple of years ago,” she told AAP.

SES Deputy Commissioner Greg Newton said all properties that could be affected by flooding from Jerrara Dam have been evacuated. “Controls have been placed in that area to make sure people don’t back into that area or travel on any of the roads that might be at risk should we get significant flooding if the dam wall fails completely,” he told ABC radio.

Source: http://www.theaustralian.com.au/news/nation/tornado-rain-hail-storm...

Comment by Starr DiGiacomo on August 1, 2015 at 12:38am


Temghar trickles away

After Assembly debate, govt to form committee of experts to plug growing leakages that threaten to collapse new dam

Temghar dam has been leaking ever since it was first built. But, the leaks have become so pronounced now that the dam — which has been supplying water to the city for quite some time — is on the brink of collapse. After a debate in the legislative Assembly's monsoon session on Tuesday, the state government has decided to form a committee of experts to look into the problem. 

Surprisingly, Temghar is one of the newest dams and was fully completed only by 2010. "Khadakwasla is the oldest dam, but there is absolutely no leakage in it. My right to information (RTI) petition back in 2013 had revealed that Warasgaon dam, which was built before Temghar, has 3 per cent leakage, whereas Temghar has 10 per cent, which is the maximum. Over the years, leakage is only growing. The newer dams were built with better technology. But they are no match to the Khadakswasla dam, which is more than 100 years old," said Vivek Velankar, president of Sajag Nagrik Manch.

The more the water in the dam, the more the leakage. Hence, it is more prominently seen during the rainy season. The irrigation department also states that the leakage is more than acceptable levels. "Last year, the rate of leakage was 410 litres per second (lps). The leakage depends on the water level. The maximum leakage was in 2011, with 602 lps. However, subsequently, we had done some repairs on 260 sq metres of the dam, which had the maximum leakage. We need a permanent solution, which is why the committee has been formed," said A P Kulkarni, assistant engineer of the Temghar Project Sub Division.

However, the irrigation department insists that despite the leakage, there is no wastage of water. "The dam is upstream of Khadakwasla. Therefore, whatever water leaks out goes in the water system to go to Khadakwasla. We ensure that water from Temghar is released first every year," said S S Atre, sectional engineer in charge of Temghar dam.

Temghar trickles away
The Temghar dam has 10 per cent leakage while Khadakwasla dam, more than a 100 years old, has no cracks to show. PIC: MANOJ BIDKAR

Construction work for the dam began in 1997. Till 2001, it was in full swing. However, later when some forest land was in the danger of being submerged by the project, work stopped. It again began in 2009 and the dam was finally completed in 2010. By 2006 itself, leaks had surfaced, but the full extent of the problem was realised only in 2010, when the dam filled up with water. Owing to this leakage, the irrigation department is yet to give a completion certificate to the contractor. While the irrigation department waited for the contractor to repair the leaks, nothing has been done.

"Even though the work will be taken up by us, it will be done at the contractor's cost. There is a problem on the upstream face of the dam," said Ishwar Choudhari, sectional engineer at the Pune Irrigation Project Circle and a member of the committee formed for Temghar dam's repair.

Comment by Starr DiGiacomo on July 12, 2015 at 12:51am


Heavy Rains lash Uttarakhand - Haridwar Water Dam Collapses



Comment by Starr DiGiacomo on June 29, 2015 at 6:15am


Sekmai dam develops crack

River in full flow at Sekmai damRiver in full flow at Sekmai dam

IMPHAL, Jun 28: Fate of Sekmai dam is now uncertain as it has developed a long crack in the middle due to the sudden increase of water volume with the State receiving heavy downpour in the past few days.

Sekmai river is now flowing above the danger level although sluice gates of the dam have been opened to reduce the water volume.

Moreover, canals which flow into the river have been blocked by concrete walls which have been erected to check further rise of water volume.

However, if the downpour continues for a few more days, the dam is likely to collapse any time as the volume of water which passes through this crack is increasing day by day.

At this juncture, finger of accusation has been raised against the officials concerned of State Minor Irrigation Department for not maintaining quality during the construction of the dam.

A 35-feet portion of retaining wall of the dam collapsed in 2013.

After probing the incident, the State Vigilance Commission recommended the Minor Irrigation Department to issue warnings against Assistant Engineers Zuithang Gangte and H Brajendra Sharma and Section Officer L Jibal.

In March this year, Opposition MLA L Ibomcha also took up the matter in the State Assembly and demanded the Minister concerned to take action against these officers.

However, H Brajendra was promoted to Executive Engineer on March 24 this year.

Meanwhile, officials and engineers concerned of MI Department inspected the dam today.

However, other than praying for the Almighty’s mercy, they were helpless and nothing could be done at this point of time as the water level was too high.

Sekmai dam project was taken up in 2011 at an estimated cost of Rs 4.22 crore by Minor Irrigation Department under the Non-Lapsable Central Pool of Resources (NLCPR) of North Eastern Council (NEC).

The project was to be commissioned within one year.

Comment by Starr DiGiacomo on June 27, 2015 at 9:03pm


Spillway collapse at Erity Dam results from unattended dam safety needs


On June 22 after unusually higher than normal seasonal amounts of rain, according to local officials, the right spillway of Erity Dam collapsed. Erity Dam is a 102-year-old concrete gravity dam on the River Rouge in Beverly Hills Village, Mich., a suburb of Detroit.

Inspection reports dating back to 2007 from both the Michigan Department of Environmental Quality (DEQ) and private engineering firm Hubbell, Roth & Clark gave no specific time period, but they indicated Erity Dam’s level of disrepair and lack of maintenance would lead to a structural failure.

No injuries resulted from the failure, but locally published reports said the spillway collapse caused the loss of several trees, “severe” erosion below the spillway and slight damage to nearby Evergreen Road.

DEQ and private sector engineers estimate costs to repair and maintain the dam range from US$250,000 to 3 million, according to Chris Wilson, village manager.

Additionally, Wilson said he has concerns that large amounts of water are passing underneath Evergreen Road, and the flow will likely undermine the road’s “safety and viability.”

In his 2009 report to the Beverly Hills Village council, Wilson wrote that the DEQ notified the village in December 2007 that the dam contained some structural deficiencies.

After being hired by Beverly Hills Village, in its May 2013 report to the village council, HR&C stated, “If left in their current state with no maintenance or dam removal, the structures will ultimately fail.”

Immediately after the collapse, Wilson said, “The DEQ had just come out earlier in the month [June 2015] and told us failure of the dam was imminent.”

Erity Dam is a gravity dam 16 ft in height and has a length of 240 ft. The dam creates Rouge River Pond, a 27-acre catchment area that has a 200 acre-feet maximum capacity. From it, the dam has a maximum discharge is 2,550 cubic feet per second. 

Comment by Starr DiGiacomo on June 16, 2015 at 6:36am


Houses evacuated following private dam break in Oklahoma City

Comment by Starr DiGiacomo on June 12, 2015 at 4:22am


Texas flooding: dam threatens to collapse after lake overflows near highway - TomoNews

Comment by KM on June 6, 2015 at 3:20pm


Georgia lake VANISHES overnight after 50-year-old dam gives way in ferocious storms - just the latest wave of freak weather ruining U.S. summer

  • Aspen Lake in Coweta County, Georgia, drained overnight after a rainstorm
  • It's believed a dam keeping the water in place broke away allowing the lake to drain
  • Residents are devastated but do not expect any help to rebuild because the lake was constructed on privately-owned land

The residents of Newnan in Coweta County, Georgia, had lived around their beautiful neighborhood lake for decades.

Surrounded by lush woodland and complete with jetty's in which they could sail their pleasure boats, the entire community was devastated to find that overnight it had completely disappeared after a freak thunderstorm.

Their favorite water feature, known as Aspen Lake, was completely wiped off the map (or rather drained!) last weekend as a slow-moving storm passed through the area.

A nearby dam that kept the water in place simply broke apart following years of neglect. It allowed the water to flow out, leaving nothing more than an enormous puddle of mud in its place.

Drained: An oversized puddle of mud is all that's left of Aspen Lake in Coweta County, Georgia

Drained: An oversized puddle of mud is all that's left of Aspen Lake in Coweta County, Georgia

Muddy muddle: As the lake residents slept, the heavy rains caused the 50-year-old dam to give way

Muddy muddle: As the lake residents slept, the heavy rains caused the 50-year-old dam to give way

What used to be: The mud marks the footprint of the lake site; twisted tree trunks protrude from the mud, from trees that were flooded when the dam was built

What used to be: The mud marks the footprint of the lake site; twisted tree trunks protrude from the mud, from trees that were flooded when the dam was built

Comment by Starr DiGiacomo on May 27, 2015 at 5:36am


Crews assess damage after dam collapse at Bastrop State Park

Comment by KM on May 26, 2015 at 1:11am


What Exactly Is Going On At Lake Mead?

Following our exposure of the plunge in Lake Mead water levels post... officials were quick to point out that the drop was "due to erroneous meter readings" - which in itself is odd given we have not seen such an aberration before in the measurements. The data today shows a super surge in the Lake Mead water level - which, even more mysteriously, indicates from pre-earthquake to now, theLake has risen by the most in a 3-day-period in years (as long as we have found history). How was this level 'manufactured' you ask? Simple - discharge flows from the Hoover Dam were curtailed dramaticallyWe are sure there is a simple explanation for all this...

Yesterday we noted the plunge in Lake Mead water levels...


Officials said - do not worry, the readings are faulty...

Which resulted in this miracle...


The biggest 3-day net surge in water levels (0.7 feet from Thursday to Sunday) on recent record...


How was this miracle achieved (given the general lack of precipitation)? Were discharge levels curtailed drastically?


Nope - nothing odd here at all...


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