Articles | Volume 18, issue 2
Nat. Hazards Earth Syst. Sci., 18, 647–668, 2018
https://doi.org/10.5194/nhess-18-647-2018
Nat. Hazards Earth Syst. Sci., 18, 647–668, 2018
https://doi.org/10.5194/nhess-18-647-2018
Research article
02 Mar 2018
Research article | 02 Mar 2018

Sediment traps with guiding channel and hybrid check dams improve controlled sediment retention

Sebastian Schwindt et al.

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Cited articles

Allan, D. J. and Castillo, M. M.: Stream Ecology, Springer, Dordrecht, the Netherlands, 436 pp., 2007. 
Armanini, A. and Larcher, M.: Rational criterion for designing opening of slit-check dam, J. Hydraul. Eng., 127, 94–104, https://doi.org/10.1061/(ASCE)0733-9429(2001)127:2(94), 2001. 
Armanini, A., Dalri, C., and Larcher, M.: Slit-Check Dams for Controlling Debris Flow and Mudflow. Presented at the International Symposium Disaster Mitigation of Debris Flows, Slope Failures and Landslides, Universal Academy Press, Inc., 141–148, 2006. 
Armanini, A., Dellagiacoma, F., and Ferrari, L.: From the check dam to the development of functional check dams, in: Fluvial Hydraulics of Mountain Regions, Springer-Verlag, 331–344, https://doi.org/10.1007/BFb0011200, 1991. 
Baigún, C. R. M., Nestler, J. M., Minotti, P., and Oldani, N.: Fish passage system in an irrigation dam (Pilcomayo River basin): When engineering designs do not match ecohydraulic criteria, Neotrop. Ichthyol., 10, 741–750, https://doi.org/10.1590/S1679-62252012000400007, 2012. 
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Short summary
Mountain rivers can mobilize important amounts of sediment that endanger downstream dwellers and infrastructure during floods. Sediment traps are built immediately upstream of urban areas to retain hazardous sediment. However, many sediment traps retain too much sediment, which is then missing in downstream river sections, leading to a poor eco-morphological state. This study proposes an experimental research-based solution to improve sediment traps using a guiding channel.
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