The creation of a reservoir in the White Volta River, Ghana: An analysis of the impact on river morphology

There are plans for the construction of a multi-purpose dam in the White Volta River near Pwalugu in northern Ghana. The reservoir that will be formed should be beneficial for hydropower generation, irrigation and fishery. Up to now there has been no research into the morphological consequences of the creation of this reservoir. In this study...

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...

De morfologische effecten van de baggergeulen in de Zandmaas

Naar aanleiding van de hoogwatergolf op de Maas in 1993 werd door de Minister van Verkeer en Waterstaat de Commissie Boertien 11 ingesteld, met als opdracht te adviseren op welke wijze de hoogwateroverlast in het Maasdal in de toekomst beperkt kan worden. Het advies luidde in hoofdzaak een verbreding van de Grensmaas en een verdieping van de...

Longitudinal profiles of rivers with a composite cross-section

In one-dimensional river modelling it is common to schematise the cross-section into a rectangular cross-section with a constant width. If a quasi-steady flow is assumed, the equilibrium longitudinal profile is known and unique: the bottom slope is constant and equals the water surface slope. However, numerical calculations at DELFT HYDRAULICS...

On the morphology of rivers on volcano slopes

The rivers on the slopes of the Kelud volcano in Indonesia are marked by steep slopes and fine sediment. Therefore often supercritical flow and large sediment transports occur. In this exploratory study a mathematical model has been developed for this type of rivers. The properties of this model are examined with an analysis of the...

Morphological reaction of rivers due to sediment mining

In many rivers sediment is mined at same distance from the river mouth. Examples are the Brantas river at Java, Indonesia and the Mekong river, Thailand. This study contains the research of sediment mining in general. The sediment mining has its consequences on the river morphology: The bedlevel and the waterlevel decrease downstream as weIl as...