Reconstruction of a stage-discharge relation for a damaged weir on the Cavaillon river, Haïti
(2016) Fourth European Congress of IAHR — Location: Liège, Belgium (2016.July.27AD)
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- Abstract
- (en) Haiti is probably one of the most exposed countries to dramatic floods and inundations due, among other, to intense deforestation. Haiti is also extremely poor in hydrologic and hydrographic data, these data being not considered as a priority in a context of frequent disasters. The ambition of the program sustained by the Belgian Cooperation Administration (ARES-CCD) is to create, through an exemplary watershed and river, the Cavaillon River, a simple and repeatable methodology for enhancing hydrologic data. One of the required data is the upstream discharge, which should be evaluated thanks a weir, the Dory weir, unfortunately in very bad condition. The aim of the presented work is to build a stage-discharge relation, considering that no data are available about the design and the construction of this weir that was damaged by several floods, with the consequence that it is certainly not working in standard conditions. In situ survey, laboratory scale model and numerical modelling using the free Open Foam software were used to address the problem from complementary approaches. The so-calibrated model will be used used to generate several flow scenarios on the Dory spillway, considering its exact damaged geometry and to build progressively the local stage-discharge relation that could supply an upstream boundary condition to the flow model from measurement of upstream water level.
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Citations
Carlier d’Odeigne, O., Roelandts, O., Verschoore, T., Zech, Y., & Soares Frazao, S. (2016). Reconstruction of a stage-discharge relation for a damaged weir on the Cavaillon river, Haïti. Fourth European Congress of IAHR, p. 671. https://hdl.handle.net/2078.5/223845