Subansiri Lower Dam, Hydroelectric dam in Arunachal Pradesh, India
Subansiri Lower Dam is a hydroelectric facility on the Subansiri River between Arunachal Pradesh and Assam. The project uses a concrete gravity structure to harness the river's flow for power generation.
The project began in 2005 to generate electricity for regional supply through modern turbine technology. Construction has progressed since its inception amid changing site conditions.
The project affects thirty-eight families in the region between Arunachal Pradesh and Assam, leading to significant social changes in local communities.
The site sits in a mountainous region with seasonal water level changes and variable weather. Visitors should expect challenging terrain and check local conditions before arriving.
A landslide in 2023 blocked a key diversion tunnel and caused unexpected water level changes at the site. Such events highlight the challenges of major construction projects in geologically active areas.
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