Logjam at Baleh River not due to site clearing but active logging at upstream tributaries

The logjam affecting the Baleh River on Aug 22 at 1330 hours.(Image courtesy of Sarawak Energy)

Follow and subscribe to DayakDaily on Telegram for faster news updates.


KUCHING, Aug 23: Sarawak Energy Berhad (Sarawak Energy) strongly refutes claims that the logjam and debris situation at Baleh River is caused by site-clearing works from the Baleh Hydroelectric Project (HEP).

The GLC explained that the origin of the logjam and debris is upstream of the project site and is clearly not from the site clearing works.

“This is because biomass clearing activities upstream of the dam to prepare for impoundment is only expected to start in 2023 which is in two years’ time.


“These biomass clearing activities will be under a structured waste management program under the supervision of the NREB in compliance with the requirements of the Baleh HEP Social Environment Impact Assessment (SEIA) report approved in 2015,” said Sarawak Energy in a press statement today.

Logjam on the Baleh River on Aug 21, 2021 at 1445 hours. (Image courtesy of Sarawak Energy)

Scheduled for completion in 2026, the 1285MW Baleh HEP is a key State infrastructure project. It is in the interest of Sarawak Energy to ensure that such incidents do not occur at the Baleh project site as it is detrimental to the safety of Sarawakians, neighbouring communities and the hydropower facilities and will affect the timely completion of the project.

“There is no major land clearing activity currently happening at the project site that would have contributed to the situation.

“The last site clearing works was in 2018 during project commencement and that was downstream from the diversion tunnels. The activity was completed in April 2019 where the associated logs and debris were properly disposed off in accordance with the approved Natural Resources and Environment Board (NREB) guidelines and under their supervision,” stressed Sarawak Energy.

To verify the source of the floating debris, Sarawak Energy’s team onsite has conducted land, river and aerial drone surveillance following reports of the mass accumulation of timber and other natural debris in the river.

From the initial assessment, Sarawak Energy said it has been concluded that the source of the debris is more than 1.5km upstream of the diversion tunnels inlet portal.

Overview of the logjam situation at Baleh HEP. (Image courtesy of Sarawak Energy)

“It is understood that timber logging continues to be active at upstream tributaries of Baleh River,” said Sarawak Energy.

It expressed deep concern about the impact of the logjam on the safety of the construction of Baleh HEP.

“If the situation continues, there will be a significant risk to the project’s construction as well as the safety of downstream communities.

“Sarawak Energy’s team has already started trial clearing works to determine the safest and most efficient method to clear the floating timber debris obstructing the water flow into the inlet portal of the diversion tunnels. For safety reasons, the pace of the clearing works can only be accelerated after the high water levels recede,” said Sarawak Energy.

Overview of the Baleh River with the floating debris from upstream. (Image courtesy of Sarawak Energy)

Sarawak Energy reiterated its commitment to responsible delivery and environmental performance of all projects to comply with Sarawak and Malaysia laws as well as international standards and guidelines.

Baleh HEP is developed in line with international best practices for large dams to ensure integrity and safety. These guidelines include:

• International Commission on Large Dams (ICOLD) standards and guidelines which ensures our hydropower projects are built and operated safely.
• International Hydropower Association (IHA) Hydropower Sustainability Assessment Protocol (HSAP) which is formally embedded in our project development process.

As a member of the IHA, Sarawak Energy said it is building the Baleh HEP in accordance with the HSAP in which environment control is a key component and requisite.

“This is reflected in the preparatory works, detailed geological investigations and studies conducted at various stages of hydro project development.”

The GLC said independent reviews are also conducted throughout construction, before impoundment and periodically during operations following commissioning and this has been the practice since the development of Batang Ai Dam, Sarawak Energy’s first large hydropower project, which was constructed in the 1980s and comminssioned in 1985.

“Sarawak Energy calls on all agencies, other stakeholders and operators in the area to work together to resolve this issue which presents a threat to the safety of the Baleh River community and the safe and timely delivery of the Baleh HEP,” said Sarawak Energy. — DayakDaily

Logjam on the Baleh River on Aug 21, 2021 at 0800 hours. (Picture courtesy of Sarawak Energy).