Lao Dam Collapse Caused by Heavy Rains, Faulty Construction: Minister

Email story
Comment on this story
Print story
Villagers attempt to clean their home as floodwaters begin to recede in Attapeu province's Sanamxay district, July 26, 2018.
Villagers attempt to clean their home as floodwaters begin to recede in Attapeu province's Sanamxay district, July 26, 2018.
AP Photo

UPDATED at 10:20 A.M. EDT on 2018-07-27

A high-ranking Lao official suggested Thursday that a dam collapse earlier this week in Champassak province was the result of faulty construction and said the project’s developer should be held accountable, as the death toll from flooding has reached 30, with more than 20 hospitalized for injuries.

On the night of July 23, water poured over a saddle dam at the Xe Pian Xe Namnoy hydropower project in Champassak, sweeping away homes and causing severe flooding in up to 12 villages downstream in Champassak and neighboring Attapeu province.

Despite early warnings of a possible breach due to heavy rainfall, many were left behind in their homes when “Saddle Dam D” collapsed, prompting questions about the evacuation process and what was known about the dam’s structural integrity before the disaster struck.

On Thursday, Minister of Energy and Mines Khammany Inthirath told RFA’s Lao Service that the burst was caused by “heavy rainfall” and “construction technique.”

“From July 21-23, there was heavy rainfall in the area and this caused water in the main reservoir to increase rapidly,” Khammany said.

“It overloaded Saddle Dam D, which has a dike constructed of soil and stone, and combined with the rainfall, it finally burst on July 23,” he said.

“The construction technique is one of the main causes of the collapse, because they built the dike … with soil and stones.”

The U.S. $1.02 billion Xe Pian Xe Namnoy hydropower project involves Lao, Thai and South Korean partners and consists of two main dams and five subsidiary dams.

On Wednesday, the project's main partner, South Korea's SK Engineering & Construction, said in a statement that the firm had discovered fractures in the dam 24 hours before the collapse, and had “immediately alerted the authorities and began evacuating villagers downstream.”

Khammany told RFA that the saddle dam was “91 percent complete” and should only have been filled with water incrementally, but said the heavy rainfall had inundated the structure.

“We can rule out technical fraud,” he said, adding that construction had proceeded according to “international standards.”

When asked whether the developers had prepared for increased water capacity during the annual rainy season, the minister said that they had, but the amount of rainfall had surpassed expectations.

“Some years it rains little and others it rains a lot—each storm is different in intensity,” he said.

“But I am fairly certain that the construction technique for the dam was poor, which led to a collapse during heavy rainfall.”

Earlier on Thursday, Khammany told reporters that the construction company should take full responsibility for the incident.

“I confirm that compensation will be given according to the concession agreement,” he said.

“Everything that happened is related to the dam construction, so the developer [Xe Pian Xe Namnoy Power Co. Ltd] must be held 100 percent accountable,” he added, without providing further details.

Death toll rise

Khammany’s assessment came as an official with the taskforce committee overseeing rescue operations in the region confirmed to RFA that the death toll from the collapse had risen to 30 on Thursday, with more than 20 people hospitalized with related injuries, as rain continued to blanket the area.

On Wednesday, Laos’ Prime Minister Thonglun Sisoulit said in a televised news conference that 26 people had been confirmed dead and 131 were missing, though officials had earlier suggested that “hundreds” were missing in the aftermath of the collapse.

The taskforce committee official, who spoke on condition of anonymity Thursday, said that the number of people living in villages along the Sekong River who may be impacted by the collapse could reach as many as 8,000.

More than 600 villagers remain stranded in floodwaters, as rescue teams have had difficulty accessing certain areas of the remote region, he said, adding that efforts will be further hampered by mud and debris left behind after the waters recede.

Vietnam has sent military and medical personnel to assist in rescue efforts, while Thailand has pledged around U.S. $150,000 in aid. Around a dozen Chinese rescue workers joined efforts on Thursday.

Cambodians affected

Along the Sekong River in downstream areas of Cambodia’s Stung Treng province, local authorities told RFA’s Khmer Service that around 5,000 flood victims had been relocated to four safe communes in the region, and were being provided food and medical attention.

Provincial spokesman Men Kong said authorities were focusing on assisting victims and would later investigate whether to hold Lao authorities responsible for compensation related to inundation from the flooding, which he suggested could continue into next month.

Cambodia’s Ministry of Water Resources and Meteorology said Thursday that the water level of the Sekong River is currently above 11 meters (36 feet) and is likely to reach 12 meters (39 feet) before it recedes. The rise of the river is expected to damage roads, housing, and other infrastructure in Stung Treng, it said.

A flood victim in Stung Treng named Le Chy told RFA he is concerned that the flooding will destroy hundreds of hectares (1 hectare = 2.3 acres) of farmland and plantations, and seriously impact area residents if it continues.

Dam-building spree

Laos and many other Asian countries are on a dam-building spree as they try to harness the power of the Mekong and other rivers.

While the Lao government sees power generation as a way to boost the country’s economy, the projects are still controversial for their environmental impact and financial arrangements.

According to International Rivers, an environmental advocacy group, the current Lao hydropower development plan includes 72 new large dams, 12 of which are under construction and nearly 25 are in advanced planning stages.

The Lao government says the dams will help pay for anti-poverty and other social welfare programs, but International Rivers asserts that much of the power generated by Laos is sold to neighboring countries and then resold to Laos at higher rates.

Reported by RFA’s Lao Service and RFA’s Khmer Service. Translated from Lao by Ounkeo Souksavanh and Samean Yun. Written in English by Joshua Lipes.

Correction: An earlier version of the story misidentified the location of the Xe Pian Xe Namnoy hydropower project. The affected dam is located in Champassak province, while the villages impacted by the flooding are located in Champassak and neighboring Attapeu province.

Comments (8)

Anonymous Reader

The mad and desperate Lao losers did nothing to help the victims of the disasters except barking!

Aug 22, 2018 09:08 AM

Anonymous Reader

Start counting your days boys. The end is coming fast.

Sep 23, 2018 03:37 AM

Anonymous Reader

Minister Khammany Inthirath is only demonstrating publicly what an inexperienced and technically incompetent twit he really is. His amateurish comment “The construction technique is one of the main causes of the collapse, because they built the dike … with soil and stones” says it all. I am not a dam engineer but I learned about earth core/rock fill dams when I was in high school around 45 years ago! It’s not new technology, Mr Inthirath. In fact, this construction method has not only been in use for hundreds of years but is the most common dam construction technique used globally, especially for secondary or “saddle” dams. Any human who has travelled a little and has two eyes in their head can see that!

I wonder how Mr Inthirath can explain why the Lao Government ignored the imminent dam failure warning that the hydro company gave the previous day. Or is this just going to be conveniently swept under the carpet? It is patently obvious that the Lao Government has already set itself on a course for passing the blame to anyone other than itself!

“The Battery of SE Asia” has been a poorly executed concept from the start. Following the communist takeover in 1975, The Lao Government has been on a mission to move the traditional hill dwellers (Hmong, Ya and other ethnic groups) out of the isolated mountains and into the valleys where they can have control imposed upon them; now the Government is on a mission to fill the valleys with water, thus forcing the inhabitants to higher ground. How’s that for policy reversal? Despite producing a huge amount of electricity, the domestic power supply in Laos is pathetic, with common outages and network failures. It appears the Government has signed electricity export agreements that are in excess of available supply, resulting in load shedding of the domestic supply to compensate for the export shortfall.

Aug 21, 2018 11:04 AM

Anonymous Reader

The barking Lao losers are good for nothing except making a big mouth for no reason.

Aug 09, 2018 06:19 PM

Anonymous Reader

If the broken dams are not enough reason for Lao people to complaint then you are less than an animan boy. You dad pocketted huge amount of money from dam-builders it's all that counts for you.You don't care about human lives, loss of livestock, loss of homes and families. Think of schools, orphans, parents without their children, dead animals, fruit trees gone. And you know what. Famine might even come along. Animal this is not a reason ? Drop dead animal.

Aug 14, 2018 06:53 AM

Anonymous Reader

The stereotype and desperate Lao losers jump on the collapse of the dam to make a bark with no bite and to indiscriminately insult the current government of Laos.

Aug 08, 2018 06:57 AM


The stereotype and desperate monkey-Lao jumps to the ceiling whenever someone doesn't think like him and expresses concern about what the Lao blood-sucking party-state is doing to Lao people ! The monkey-Lao in and out of Laos along with Lao party-state are the winners of broken dams, disease, anger, hunger, broken homes, broken houses, flooded rice fields,dead livestock, living on the roof, schools buried in mud, orphans left without assistance, parents losing children carried away by water , psychiatric ills... you have a lot of guts to enjoy what you've got boy.

[This comment has been edited by RFA Editorial staff per our Terms of Use]

Aug 08, 2018 03:43 PM

Agerico T. Isorena

from Quezon City, Philippines

If the cause of the collapse really is faulty construction, then the responsible party or consortium member in the Xe Pian Xe Namnoy Power Co. Ltd. can be pinpointed easily—the one whose roles or is responsible for the “construction supervision of the Project” and that is Ratchaburi Electric Generating Holdings. In turn Ratchaburi subcontracted its role, a crucial works, to another engineering company.

[This comment has been edited by RFA Editorial staff per our Terms of Use]

Aug 02, 2018 10:04 AM

View all comments.





More Listening Options

View Full Site