Large braided rivers have many beneficial roles, from provision of water for agriculture and means of transport to various ecosystem services. However, they are geomorphologically active, which results in problems with bank erosion and navigability. Some of the largest rivers may have bank line shifts of hundreds of meters per year (Baki and Gan, 2012). This leads to loss of homes and good agricultural land, destruction of infrastructure and flood protection works. River training measures are used to combat these problems and reclaim lost land. Conventional structures, mostly developed in smaller watercourses, are problematic in very large and unpredictable braided rivers, due to their required size, cost, inflexibility and environmental disturbance (Nakagawa et al., 2013). More adaptable, cheaper (local materials) and less disturbing measures are required. One promising possibility is the use of recurrent measures (such as bandals) to close aggressive secondary channels (Mosselman, 2006). Coupled with a prediction model for planform changes and erosion (such as Klaassen et al., 1993), this can be a very flexible and efficient way to protect nearby land against bank erosion, start land reclamation or improve navigability.
|Publication status||Published - 2017|
|Event||NCR-Days 2017 - Wageningen, Netherlands|
Duration: 1 Feb 2017 → 3 Feb 2017
|Period||1/02/17 → 3/02/17|
|Other||Netherlands Centre for River Studies is a corporation of the Universities of Delft, Utrecht, Nijmegen, Twente and Wageningen, UNESCO-IHE, RWS-WVL and Deltares|