mid-snake river access

The public’s cooperation in following mandatory decontamination is crucial to the success of our efforts. The mandatory decontamination zone is critical to minimizing any potential movement of quagga mussels.

Closure Update

The temporary closure of the Snake River between Hansen Bridge and Pillar Falls, in effect from September 29 through October 14, has been lifted. The Idaho State Department of Agriculture has completed the scheduled treatment, and all restrictions have been removed. Access to the water and shoreline between Hansen Bridge and Pillar Falls is now open to all persons, watercraft, pets, decoys, and fishing equipment.

mandatory decontamination

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 stations are operating at Centennial Waterfront Park, Shoshone Falls, and Twin Falls Reservoir.

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 Waterfront Park, Shoshone Falls, or Twin Falls Reservoir 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 Waterfront Park, Shoshone Falls, and Twin Falls Reservoir operating hours:

Centennial Waterfront Park - 7 a.m. to 10 p.m. *Due to construction, Twin Falls County has temporarily closed Centennial Waterfront Park.

Twin Falls Reservoir - 8 a.m. to 10 p.m.

Shoshone Falls Boat Launch - 2:30 p.m. to 9:30 p.m. Mon. - Fri. and 7:30 a.m. to 9:30 p.m. Sat. - Sun.

*It is strongly encouraged to be off the water at least 30 minutes before park closure time to allow for all watercraft to be decontaminated.