Vatnsfell water-diversion canal - Cofferdam construction, dewatering and removal of accumulated sediments

a bottom width of 6 meters, excavated partly in rock and partly in loose material. Approximately 40.000 cubic meters of sand and gravel accumulated in the canal be removed using conventional excavation methods hauled to spoil area 2km away. A temporary earthfill dam will be erected at the upstream e

nd of the canal to enable dewatering the canal, approximately 65 meters long at the crest and 10 meters wide at the base and 13 meters heigh, with a total fill volume of approximately 11,200 cubic meters. Further, eroding material on the le