Maithon Dam, Hydroelectric dam in Dhanbad district, India
Maithon Dam is a concrete structure spanning approximately 4426 meters across the Barakar River with a height of about 56 meters, creating a large reservoir behind it. The facility houses an underground power station with multiple generator units that produce electricity from the flowing water.
Construction of the dam began in response to severe flooding in the 1940s and became part of India's first multipurpose river valley project. The facility developed into a major infrastructure work that continues to serve the region.
The reservoir created by this dam has become central to the daily life of surrounding communities, supporting farming, fishing, and water supply for local industries. The lake itself functions as a resource that people depend on and interact with regularly.
The underground power station is not publicly accessible, but the dam itself can be viewed from designated areas. The best time to visit is during drier months when water levels are more stable and visibility is clearer.
This facility was groundbreaking for housing Southeast Asia's first underground hydroelectric turbines, built deep within the earth rather than on the surface. The hidden design was a technical innovation for its era.
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