Clark Corbin

(Idaho Capital Sun) State officials have not found any viable quagga mussels since the state administered the most recent copper-based treatment in the Snake River near Twin Falls this fall, Idaho State Department of Agriculture Director Chanel Tewalt said Monday.

Quagga mussels are an invasive, nonnative species that Department of Agriculture officials first detected in microscopic larvae form called veligers in the Snake River in 2023. Since the initial detection, officials also detected quagga mussels in water samples taken in September 2024 and again this September.

Because the mussels are capable of reproducing rapidly and clogging pipes used for irrigation and drinking water, Department of Agriculture officials, contractors and other state officials have adopted a to

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