Stability of the IJsselkop bifurcation at design discharge

A hydrodynamic study shows high flow velocities at the IJsselkop bifurcation during the design discharge of 16,000 m3/s. The study, performed in 2005, concludes that these velocities might affect 1) the stability of IJssel river bed and 2) the stability of the grass cover layer of the flood plain at the bifurcation. This report provides a better...

The effect of islands in the Río Magdalena on discharge and sediment transport into the Canal del Dique, Colombia

Controlling the distribution of water and sediment at river bifurcations is one of the main challenges in river engineering and management. This distribution affects the stability of river bifurcations as well as the distribution of flooding risk, navigability and environmental conditions. The governing factors are the hydrodynamics of the two...

Experimental research on the effects of surface screens on a mobile bed

In 2000 the Dutch government chose a new point of view for the Dutch rivers: “Room for the River”. This viewpoint is the basis for a new approach of high water protection in the Netherlands. Instead of strengthening and raising the dikes, solutions must be based on space and spatial quality. One of the suggested measures is the addition of...

Stability of morphological cells to dredging-dumping activities

The Westerschelde estuary in the South-West of the Netherlands displays two meandering flood and ebb channels separated by shoals. The system of flood, ebb channel and shoal between two channel crossings form a morphological cell. The stability of the serial cell system formed by the Westerschelde is important for the navigation route to the...

Development of the first spill channel after the Dhaleswari closure

In Bangladesh a bridge is under construction over the Jamuna River, one of world's largest braiding rivers. The Dhaleswari river system is fed by the Jamuna through smaller rivers, called spill channels, because they only carry discharge during the monsoon. One of the functions of the northern Dhaleswari offtake is the supply of water to the...

Research on bifurcations in rivers

One of the unsolved problems in the water resource engineering is the morphological behaviour of bifurcations in rivers. Bifurcations can be found in deltas, in estuaries and in braided rivers. When modelling river reaches which contain a bifurcation, a nodal point relation is needed. The problem is to determine this nodal point relation. The...