Norway blows up hydro dam to restore river health and fish stocks

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A dam that has blocked the Tromsa River in Norway for greater than 100 years was blown up with dynamite this week, liberating migratory routes for fish.

Final month, the European Fee launched a information for member states to establish boundaries that might be eliminated to assist obtain the objective of restoring 25,000km of rivers to free-flowing by 2030.”Dams in rivers block migration routes – the swimways – of fish,” stated Herman Wanningen, founding father of the World Fish Migration Basis and Dam Removing Europe.

“The Tromsa dam is in a steep canyon, so our problem is to construct up a nature-like step-pool cascade to allow the fish to swim upstream within the robust present,” stated Ulrich Pulg, a fish biologist and river restorations knowledgeable.

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