Bangkok – Sompong Viengchan has spent more than three decades pressing for accountability over a single infrastructure project that reshaped life along the Mun and Mekong rivers in Thailand. Now in her mid-70s, she has watched 16 prime ministers and 26 cabinets take office and depart while her core demand has stayed the same: recognition that the Pak Mun Dam, built with World Bank support, disrupted fishing communities and forced difficult choices on families downstream. Her story surfaced again in October at a people’s tribunal in the capital that examined the social and environmental effects of projects backed by international lenders. ([1])
The Dam That Changed a River System
The 136-megawatt Pak Mun Dam was intended to generate power and support regional development when it was completed in the early 1990s. Instead, residents along the Mun River reported sharp drops in fish catches and the loss of agricultural land after construction blasting and reservoir flooding altered the waterway. A 2000 review by the World Commission on Dams, established jointly by the World Bank and the International Union for Conservation of Nature, concluded that roughly 1,700 households lost houses, land, or both, while fish yields in the reservoir and immediately upstream fell by 60 to 80 percent. Those findings aligned with what local fishers had observed on the ground. Without reliable catches, household incomes declined and many families accumulated debt. Some sent younger members to urban centers for work, while others faced relocation when seasonal flooding expanded. The changes affected not only immediate livelihoods but also the longer-term viability of village economies that had depended on the river’s seasonal rhythms.
A Life Measured in Governments
Sompong Viengchan began organizing with neighbors in 1990, well before the dam’s completion. Since then, successive Thai administrations have come and gone, yet the core grievances over lost fishing grounds and compensation have persisted. She has described the project’s effect in stark terms: building the dam, she said, is like burying a person alive because it does not end life immediately but steadily removes the means to sustain it. Her persistence reflects a pattern seen in other river-basin communities where infrastructure decisions made decades earlier continue to shape daily realities. Each new cabinet brought fresh officials and sometimes new studies, yet the underlying request for meaningful redress remained unresolved for many households. The continuity of her involvement across so many political cycles underscores how long some disputes over development projects can stretch.
Voices at the Bangkok Tribunal
The October gathering in Bangkok drew roughly 400 women land defenders from more than 30 countries to examine the track record of IMF- and World Bank-supported initiatives. Sompong presented the Pak Mun experience as one concrete case among many. Participants heard accounts of how environmental changes translated into economic pressure, family separation, and the erosion of traditional resource use. The tribunal format allowed direct testimony rather than formal legal proceedings. It highlighted recurring themes across different projects: promised benefits that did not fully materialize for affected communities and the difficulty of securing lasting remedies once construction was complete. For Sompong and others, the event offered another opportunity to place local evidence before a wider audience.
Why the Story Still Matters
Infrastructure decisions carry consequences that extend far beyond ribbon-cutting ceremonies. In the case of the Pak Mun Dam, the passage of time has not erased the original concerns; it has instead shown how those concerns can endure across multiple election cycles and policy shifts. Communities that rely on river systems for food and income continue to navigate the trade-offs that followed construction. Sompong Viengchan’s sustained involvement illustrates one way individuals respond when formal channels move slowly. Her account, shared again in 2026, serves as a reminder that the full effects of large projects often become clear only after years of observation on the ground.
