Can stone revetment or stone wall (as seen in Benaras) work as an alternative to concrete revetment? However, in both the cases, apart from the possibility of pollution there may be a risk of loss of river bank biodiversity.

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Can stone revetment or stone wall (as seen in Benaras) work as an alternative to concrete revetment? However, in both the cases, apart from the possibility of pollution there may be a risk of loss of river bank biodiversity.