Rob Ettema Serves as Panelist at Department Co-Sponsored Piura River Conference
Professor Rob Ettema served as a key panelist at the International Conference on River Morphology and Flood Control Piura River in Peru. 150 years of human intervention have transformed the Piura River, Peru‘s main irrigation area, into a semi-channeled and regulated river with levee embankments, groynes and sedimented floodplains in the lower river basin, Bajo Piura, and a non-river-channeled reach of a sediment ejection source area in the upper basin: Alto Piura. The main topic of this conference, was to study how the aggradation-degradation process of the Piura River streambed and banks might be managed by means of an adequate river training and flood control system: decreasing sediment transport capacity, by rectifying/realigning/channeling the river in the upper river basin, also referred to as “river training”, through flood protection in critical reaches, or by stabilizing the river bed and banks; increasing sediment transport capacity in the lower river basin by river-narrowing in the non-river channeling reach and creating an adequate outflow, and also by providing flood protection in the lower basin, through a process of controlled general erosion. This will make it possible to restore hydraulic capacity in the existing channeled or river training reach.