definition

Sediment replenishment method is one of new measures of sediment management mostly used in river systems where dams/reservoirs have been created. In this method, trapped (and most commonly coarse) sediment is periodically excavated (or dredged depending on the site conditions) and then transported and placed on an eroded area e.g. a channel downstream of a dam, in a manner decided according to the sediment transport capacity, the hydrodynamic conditions of the new sediment position and the environmental conditions. The replenishment processes are efficient to restore initial conditions and the bed load transport and to compensate sediment deficits that might occur in parts of rivers and floodplains after a flood event.
(Schleiss A. and Boes R., 2011, p. 357)

Co-benefits and impacts

The replenishment processes are efficient to restore the bed load transport and the associated habited by coupling reintroduction with floodplain habitat restoration.
(Schleiss A. and Boes R., 2011, p. 357)

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Also Known as sediment augmentation. Beach nourishment is a similar process which aims to compensate sediment deficits in coastal areas.

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Last modified: Sept. 13, 2016, 7:21 a.m.