The Subansiri ( Suvarna - sri ) derives its name from the gold that it carries .
From time immemorial , till very recent times , gold - washing had been practised in the rivers of Assam .
The Subansiri ( Suvarna - sri ) derives Assam 's name from the gold that it carries .
From time immemorial , till very recent times , gold - washing had been practised in the rivers of Assam .