The paper focuses on the application of gabion structures in river control and particularly on transversal gabion weirs and spillways in flood storage projects. Storage has the general effect of attenuating the flood hydrograph, reducing its peak flow rate and spreading the volume out over a longer time span; this effect may be natural or engineered as part of a flood alleviation scheme. Flood damage on a river can be significantly reduced by construction of one or more reservoirs: where a reservoir site immediately upstream from one damage center provides more economical protection than local protection works, reservoir flood storage should be considered. Flood storage works can be online: in which the water is temporarily stored within the river channel and its floodplain or offline: in which the water is diverted from the river channel, stored in a separate area (which may be part of the floodplain) and subsequently released back to the river or to another watercourse. In general, online storage works are normally located in the upper catchment (where the catchment area is modest) while offline storage works are more common on larger rivers with wide floodplains. The paper illustrates some applications of gabion structures in offline flood storage projects executed in Italy and France.