PM Hun Manet Orders Sand Dredging Halt in Cambodia After Riverbank Collapses: What Caused the Erosion?

Cambodian Prime Minister Samdech Thipadei Hun Manet has ordered a temporary suspension of sand dredging at locations where riverbanks have collapsed, calling for technical inspections to determine what caused the erosion. The directive was issued in a video message released on September 9, 2026, as public debate continues over whether sand extraction is contributing to riverbank collapses.


The prime minister instructed the Sand Resource Management Commission, relevant ministries, and Phnom Penh and provincial administrations to send officials to affected locations immediately. The inspections are expected to involve authorities responsible for water resources, environment, and mines and energy, with the findings intended to establish the circumstances at each site before responsibility is assigned.

“Cambodia is taking a more evidence based approach to the growing debate over riverbank erosion and sand dredging. Prime Minister Samdech Thipadei Hun Manet has ordered dredging to be temporarily suspended at sites where riverbanks have collapsed while authorities conduct technical inspections. The government wants specialists to determine whether individual collapses are linked to dredging, natural river conditions, strong currents, rapidly rising water levels, or other factors. The directive also calls for authorities to communicate findings clearly to affected residents and address misinformation circulating online. For sand operators, local communities and businesses connected to river resources, the inspections could provide greater clarity about environmental risks and the conditions under which dredging activities should continue.”

Dredging Suspended Where Riverbanks Have Collapsed

The temporary suspension applies to dredging operations at locations where riverbank collapses have occurred. The purpose is to prevent ongoing activity from interfering with investigations while officials assess the physical conditions and determine the causes of erosion.


Prime Minister Hun Manet stressed that not every riverbank collapse should automatically be attributed to sand dredging. River conditions can change for several reasons, including strong currents and rapidly rising water levels. “On-site investigations are necessary to establish the actual circumstances at each location,” Samdech Thipadei Hun Manet said.

The approach means authorities will assess individual locations rather than applying a single explanation to every collapse. This distinction is important for both environmental management and businesses involved in sand extraction because technical evidence will help determine whether dredging contributed to a particular incident.

Technical Teams to Examine the Causes

The prime minister has directed the relevant authorities to verify conditions directly at affected sites. Officials responsible for water resources, environmental protection, and mines and energy are expected to participate in the inspections, bringing different areas of technical expertise into the assessment.

Where provincial departments do not have sufficient technical capacity, they have been instructed to request immediate assistance from national institutions. This provides a mechanism for local authorities to obtain additional expertise when assessing more complex cases of erosion or suspected environmental impacts.

Detailed studies will be conducted before authorities determine the cause of individual riverbank collapses. The findings could help distinguish between erosion associated with dredging activity and changes caused by natural river processes.

Government Seeks Clear Answers for Affected Communities

The directive also places emphasis on communication with residents living near affected riverbanks. Following the inspections, authorities are expected to provide communities with timely and understandable information about what investigators have found and what measures will be taken.

Clear communication is particularly important when riverbank collapses affect homes, land, infrastructure or livelihoods. Uncertainty can quickly fuel concern among residents, while incomplete information can create disputes over responsibility.

Prime Minister Hun Manet also urged authorities to address misinformation circulating on social media. Some online users have blamed dredging companies for riverbank collapses even in areas where no dredging activity has taken place.

“Authorities should provide clear explanations based on actual findings to prevent public confusion,” he said.

Sand Extraction Faces Greater Public Scrutiny

The directive comes amid growing online debate about the relationship between sand extraction and riverbank erosion. Sand is an important natural resource and dredging activities are connected to economic activity, but concerns over environmental impacts have made responsible resource management an increasingly important issue.

For businesses involved in sand dredging and related industries, the latest directive reinforces the importance of operating within regulatory requirements and being able to demonstrate compliance. Technical assessments may also provide a clearer basis for distinguishing legitimate operations from activities that could contribute to environmental damage.

For investors and businesses involved in construction and infrastructure, the issue also matters because sand remains an important input for development projects. Maintaining a reliable supply while protecting waterways requires effective oversight, environmental assessment and responsible resource management.

Evidence Will Guide Decisions on Individual Sites

Rather than reaching conclusions before investigations are completed, the government is requiring officials to establish the facts at each affected location. This means the outcome could differ from one site to another depending on the evidence gathered by technical teams.

The approach also leaves room for natural river processes to be considered alongside human activity. Strong currents and rapidly rising water levels were specifically identified as possible factors, meaning authorities will examine the broader conditions surrounding each collapse.

For local communities, the inspections could provide greater clarity over what is happening along their riverbanks. For dredging companies, the process could establish whether operations are contributing to particular incidents and what corrective measures may be required.

Balancing Economic Activity and Environmental Protection

The government’s decision highlights the challenge of managing natural resources while protecting communities and the environment. Sand dredging can support economic activity, but riverbank stability and the safety of people living near waterways also require careful attention.

A fact based assessment can help policymakers strike a more informed balance. Rather than relying on assumptions or social media claims, technical evidence can provide the foundation for decisions about where dredging should be allowed, where additional controls may be necessary and where operations should remain suspended.

Conclusion

Prime Minister Hun Manet’s order places technical evidence at the centre of Cambodia’s response to riverbank collapses linked to concerns over sand dredging. By temporarily suspending operations at affected locations and requiring inspections involving relevant national and local authorities, the government is seeking to determine the causes before deciding on further action.

The outcome will matter to communities, environmental authorities and businesses connected to Cambodia’s sand and construction sectors. Ultimately, effective management will depend on transparent inspections, clear public communication and responsible resource use. The immediate priority is establishing the facts at each site, but the broader challenge is ensuring that Cambodia’s economic use of natural resources remains compatible with environmental protection and community safety.

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