mid-snake river access

The public’s cooperation in staying out of the impacted area and following mandatory decontamination is crucial to the success of our efforts. Temporarily closing waterbodies is critical to responding to the situation and to minimizing any potential movement of quagga mussels.

mandatory decontamination

ISDA has lifted the closure from Yingst Grade to Hansen Bridge.

Inspection and decontamination for watercraft entering and exiting the river between Broken Bridge (Yingst Grade) and Hansen Bridge is mandatory. Any watercraft or conveyance is required to be inspected prior to launch and decontaminated upon exit of the river. The inspection and decontamination station is operating at Centennial Park. Call 1-877-336-8676 for more information. 

Watercraft includes but is not limited to boats, kayaks, paddleboards and other devices used in water. Conveyances including duck decoys, waders, fishing tackle, life jackets, and anything that has touched the water must also be decontaminated. ISDA watercraft inspections and decontaminations are free to the public. 

Watercraft launched at any access points between Broken Bridge (Yingst Grade) and Hansen Bridge (i.e. Auger Falls Park, Yingst Grade shoreline access, etc.) must be inspected at Centennial Park prior to launch and decontaminated upon exit of the river. Access to the river between Broken Bridge (Yingst Grade) and Pillar Falls is prohibited outside of Centennial Park operating hours. 

*Closures outside of ISDA’s jurisdiction are in place in several sections of the mandatory decontamination area. These closures are not related to ISDA’s quagga mussel response.

Treatment dissipation area

Treatment dissipates immediately outside of the application area. Within this 18-mile dissipation area (Hansen Bridge to Kanaka Rapid), product was present in the water for approximately three days after the final treatment application.

The treatment concluded on October 20th. The chelated copper have dissipated as anticipated and the river has returned to normal copper levels.