Anabranching fluvial networks recently have become the focus of attention from environmental specialists, especially in the hydraulic field. Anabranching networks can be found in different physical environments; however, the hydraulic and geomorphological natures of such river networks are still not well known leading to on-going discussions on the definition and nature of the networks. Even though, alluvial anabranching networks generally have common features like vegetated islands, low water surface slope and stabl+I63e channel planform, bedrock-confined anabranching networks also have their own characteristics inherited from the geological and structural controls imposed on the single channels that compose the network complex.