Quagga mussels clog Rhine stretch, forcing costly dredging and sparking fisher protests
A massive buildup of quagga mussels between Eschenz and Hemishofen is hindering navigation on the Rhine, prompting repeated dredging and opposition from local fishermen.
The river segment from Eschenz to Hemishofen is clogged with dense colonies of quagga mussels, including both live specimens and empty shells. Annual growth of the infestation requires continual removal efforts, which officials warn could become a never-ending task. The cantons of Schaffhausen and Thurgau are caught between preserving the ecosystem and maintaining a functional shipping lane, while fishermen have voiced strong objections to the dredging operations.
Why it matters
The mussel blockage threatens a major trade route while raising environmental and livelihood concerns.
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