from where water comes in madhuban dam at silvassa?

Answer 1

Mandira Dam The city of Silvasa is on the Daman Ganga River. The Daman Ganga is a river in western India. The river's headwaters are on the western slope of the Western Ghats range, and it flows west into the Arabian Sea. The river flows through Maharashtra and Gujarat states, as well as the Union territories of Daman and Diu and Dadra and Nagar Haveli. The industrial towns of Vapi, Dadra and Silvassa lie on the north bank of the river, and the town of Daman occupies both banks of the river's estuary.

The Government of India's National Water Development Authority (NWDA) has proposed the Daman Ganga-Pinjal River Linking Project, which would build a new aqueduct linking the Daman Ganga river to the Pinjal River to the south, allowing water from the Daman Ganga to be diverted south to Mumbai via the Pinjal. In April 2003 the state government of Gujarat raised objections to the proposal.
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Answer 2

THE DAM IS ON THE DAMAGANGA RIVER.