Introduction
Public controversies surrounding large dam projects in Iran have become arenas of intense conflict between the state and its critics, including civil society actors and independent experts. These controversies are not merely technical disagreements; rather, they reflect a deeper discursive struggle over development, environmental protection, and national interest. This article examines the highly contentious case of the Chamshir Dam to explore how opposing actors construct competing narratives and argumentative logics in order to define reality and secure legitimacy in the public sphere. The study argues that the Chamshir debate is part of a broader shift in which dam-building, once widely framed as a symbol of progress and modernization, has increasingly become associated with environmental risk, governance failure, and political contestation in Iran.
Methodology
The study adopts a qualitative research design and employs argumentative discourse analysis. It uses a combined analytical framework drawn from Maarten Hajer’s concept of storylines and Norman and Isabela Fairclough’s practical argumentation model. This framework allows the analysis of both the narrative structure and the normative logic of the discourses under examination. The data were collected from two discourse arenas during the peak of the controversy, from Azar 1401 to Mordad 1402. The governmental discourse was based on 15 selected official and media texts, while the critical discourse was drawn from 90 tweets posted by 14 environmental activists and journalists on X. The analysis compares how each discourse defines the problem, proposes solutions, mobilizes values, and claims legitimacy.
Findings
The findings reveal the emergence of two fundamentally opposed and largely irreconcilable storylines. On the one hand, the governmental discourse presents Chamshir Dam as a key to national development, water management, flood control, agricultural expansion, industrial growth, and electricity generation. In this discourse, the river is depicted as a resource that must be controlled and managed through engineering intervention. The dam is portrayed as a symbol of technical competence, national capacity, and progress. Positive expressions such as “transformation project,” “engineering masterpiece,” and “the largest RCC dam in the Middle East” are used to construct a narrative of success and necessity. Critics, by contrast, are framed as politically motivated, unscientific, or opposed to national development.
On the other hand, the critical discourse constructs Chamshir Dam as an impending environmental and governance disaster. It frames the project as a threat to land, water, agriculture, ecosystems, heritage, and public trust. Particular attention is given to the dam’s location on the Gachsaran salt dome, which critics argue could lead to severe salinization and ecological damage. This discourse also emphasizes issues of opacity, poor governance, and vested interests, often referring to a “water mafia” and a pattern of repeated policy failure. Its language is marked by alarm and urgency, using metaphors such as “salt bomb,” “massacre of life,” and “the second Gotvand.” The proposed solution is to halt water impoundment, conduct independent scientific review, and move toward more transparent and sustainable development policies.
Conclusion
The Chamshir Dam controversy indicates that the conflict over dam-building in Iran is not limited to engineering or environmental concerns. It reflects a deeper struggle over values, authority, and the meaning of development itself. The state discourse prioritizes technical control, modernization, and national achievement, while the critical discourse prioritizes precaution, sustainability, transparency, and environmental justice. The article concludes that such controversies reveal a profound discursive divide between the state and segments of civil society and the scientific community. It further suggests that more democratic decision-making, participatory risk communication, and openness to alternative forms of expertise are essential for addressing future environmental conflicts in Iran.