Study of methods used for closure of tidal channels, first interim report

Within the context of Development Co-operation the Government of the Netherlands is providing Technical Assistance to the Government of Bangladesh for projects in the field of irrigation and flood control. One of the Projects in South West Bangladesh which was proposed by the BWDB for early implementation concerns the closure of the tidal river Madargong in order to complete Polder no. 5. Methods of closing tidal channels as at present applied in Bangladesh have been developed in an empirical manner. As in the future the size of closure gaps will increase a more systematic approach will be required to close those bigger gaps without mishaps. It was therefore agreed that a study would be made of closure methods in Bangladesh. This first Interim Report deals with the Madargong Closure. In addition it describes the closure methods applied in Bangladesh in detail and indicates similar techniques developed in the past in The Netherlands. The following conclusions were drawn after making a field visit to South-West Bangladesh in June 1976 and discussions with BWDB officers and closure contractors. The closure of Madargong River can be carried out as proposed by the BWDB by a local contractor on a Lump Sum basis provided that the principle "no cure no pay" is amended in a satisfactory way. The closure methods at present employed in South-West Bangladesh in general can be considered to be sound from a technical point of view as a remarkable result is reached in a short time practically without basic technical data and by making full use of local labour, local materials and local skill. In order to obtain more detailed information on various hydraulic and soilmechanic characteristics of Bangladesh' closure methods it is proposed to have two experts carrying out measurements and making observations during the forthcoming closure of Madargong River. Having obtained this information it will be possible to consider the introduction of elements of Dutch closure methods for the wider gaps to be closed during future polderization schemes

Een Nederlands Watermerk op het culturele erfgoed van de Europese Unie

Twee artikelen ovr de geschiedenis van de Nederlandse Waterbouw als aanzet voor een project over hierover geïnitieerd door de Provincie Noord-Holland. Het eerste artikel gaat over de Nederlandse inbreng in de waterbouw in de periode tot 1800, het tweede gaat over de meer recente periode

DAMS AND DIKES IN DEVELOPMENT: Symposium at the occasion of the World Water Day, 22 March 2001

Introduction Ir. Hans van Duivendijk: Dams and dikes - benefits, costs and option assessment Prof Kaare Hoege: Dikes, dams and water management Prof dr. Bart Schultz: Living with dams Prof dr. H.L.F. Saeijs and KirstenD. Schuijt: Safe dams and dikes, how safe? Prof ir. J.K. Vrijling: Dams and development The report of the World Commission on Dams Mr. Jamie Skinner:ICOLD's criteria applied to the southem delta area Ir. Leo Santbergen, Jan WillemSlager and drs. Kees Storm: Role of the consultants Drs. A. Leusink: Contractors, their changing role Ir. JJ. Enneking: List of contributors CommitteesKWP-collectio