Articles | Volume 20, issue 12
Nat. Hazards Earth Syst. Sci., 20, 3293–3314, 2020
https://doi.org/10.5194/nhess-20-3293-2020
Nat. Hazards Earth Syst. Sci., 20, 3293–3314, 2020
https://doi.org/10.5194/nhess-20-3293-2020

Research article 04 Dec 2020

Research article | 04 Dec 2020

Open check dams and large wood: head losses and release conditions

Guillaume Piton et al.

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Latest update: 18 Jan 2022
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Short summary
Open check dams are flood protection structures trapping sediment and large wood. Large wood obstructs openings of dams, thus increasing flow levels. If flow levels become higher than the dam crest, the trapped large wood may overtop the structure and be suddenly released downstream, which may also eventually obstruct downstream bridges. This paper is based on experiments on small-scale models. It shows how to compute the increase in flow level and conditions leading to sudden overtopping.
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