Fish Die-Off In Switzerland: Sediment Kills Thousands Of Fish Downstream From Punt Dal Gall Dam

Sedimentation released through the Punt dal Gall dam is being blamed killing thousands of trout and other aquatic wildlife in Switzerland’s Spoel River.

fish die-off in Graubunden switzerland april 2013

The dam and its accompanying 393-MW hydroelectric plant are located in a national park in Switzerland’s eastern Graubunden region and impound the Spoel River.

dead fish in Spoel River april 2013

A news release from utility Engandiner Kraftwerk AG and the Swiss National Park said a technical problem at the dam resulted in the blockage of residual water supply, leading to a dramatic drop in the river’s level Saturday. Officials tried to solve the problem by opening one of the dam’s ducts which unleashed the deadly wave of sediment, killing fish as far as four miles downstream of Punt dal Gall.

increased level of mud responsible for fish die-off in Switzerland

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