Quagga mussels are a pest in many places, but they’ve yet to invade the Pacific Northwest.
Quagga mussels are a pest in many places, but they’ve yet to invade the Pacific Northwest. Michael Sears/Milwaukee Journal Sentinel/KRT
Quagga mussels are a pest in many places, but they’ve yet to invade the Pacific Northwest. Michael Sears/Milwaukee Journal Sentinel/KRT

Northwest states aim to protect Columbia basin from invasive species

September 15, 2016 01:40 PM

UPDATED September 15, 2016 05:39 PM

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