A high court judge has given the green light for the construction of a massive dam in the southern state of Gujarat to flood an area of 865 sq km.
The Narmadas water body, which has been in the pipeline for years, has the backing of the central government.
But a judge from the High Court of Allahabad on Wednesday gave the go-ahead to the project on the grounds that the local environment and water resources are of prime importance.
The project will create one of the largest water bodies in the world, as well as the largest freshwater lake in the country.
The dam is being constructed to provide irrigation to a huge area of land that will cover 1.2 million hectares.
The Gujarat government is also planning to construct a dam on the Brahmaputra river, which is a major waterway in the state.
The Brahmaputras water body is currently a project that has been stalled due to concerns over water management and the impact of climate change.