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Timeline -- Aquatic Invasive Mussels

Friday, 12/2/16
• Restrictions enacted on Canyon Ferry and Tiber Reservoirs for launching or taking out boats or docks until ice over. At the time of the restrictions, ice over was in process on both reservoirs. The restrictions help protect Montana waters from transmittal of aquatic invasive mussel larvae from both reservoirs. We are entering a period of very low transmittal risk due to cold temperatures, which prevent mussels from reproducing and larvae from surviving.

Thursday, 12/1/16
• About 100 water samples are sent to a lab in Colorado for testing. These are samples taken in Montana at various times in the past five months. Samples are currently being processed at labs in Montana, California and Colorado. Results expected within two weeks.

Monday, 11/28/16
• The interagency Montana Mussel Response Team begins meeting in Helena. The team is comprised of experts from Montana Fish, Wildlife and Parks, the Montana Department of Natural Resources and Conservation, the Montana Invasive Species Advisory Council. The team implements an incident command structure to respond to the discovery of aquatic invasive mussels.

Tuesday, 11/22/16
• Dive teams finish up at Canyon Ferry. No adult mussels found.

Tuesday, 11/22/16
• Dive teams finish up at Canyon Ferry. No adult mussels found.

Monday, 11/21/16
• Two U.S. Fish and Wildlife Service dive teams search at Yacht Basin for adult mussels – none found.
• FWP lab detects suspect organism in sample collected 7/21/16 from Missouri River York’s Islands Fishing Access Site.

Friday, 11/18/16
• FWP detected a suspect organism in sample collected by FWP staff in Milk River 7/28/16.

Wednesday, 11/16/16
• Scrape samples collected the previous day at Canyon Ferry were negative for mussels.

Tuesday, 11/15/16
• FWP snorklers search docks at the Silos on Canyon Ferry. No adult mussels discovered. Scrape samples collected.

Sunday, 11/13/16
• More work with dogs at Yacht Basin. Alerts on same boat, but not docks.

Saturday, 11/12/16
• Dogs work at Canyon Ferry. Two alerts on dock at the Silos. One dog alerts on boat stored on shore and another alerted on rip rap at Yacht Basin.

Friday, 11/11/16
• Mussel sniffing dogs work through shoreline and docks at Tiber. Results inconclusive.

Wednesday, 11/9/16
• Stakeholders notified of results in Tiber and Canyon Ferry just prior to first press release.

Monday, 11/7/16
• Interagency team holds first joint meeting, establishes response team and basic communication plan.

Tuesday-Wednesday, 11/1/16-11/2/16
• Canyon Ferry re-sampled.
• Test results from independent lab find suspect samples in those collected from Tiber by FWP during the summer.

Tuesday-Thursday, 10/25/16-10/27/16
• FWP re-sampled high priority sites on Tiber, including gaining access to the restricted dam and water project areas, which hadn’t been sampled prior.
• FWP lab continued to work through prioritized samples -- Discovered a suspect sample from Canyon Ferry, from a water sample collected 8/16.

Wednesday, 10/19/16
• A second suspect sample from Tiber was discovered in those collected by FWP’s summer sampling effort.

Tuesday, 10/18/16
• Both BOR samples were looked at by independent lab and found to be aquatic invasive mussel larvae.
• FWP found an aquatic invasive mussel larva in one of our samples collected from Tiber during the summer.

Monday, 10/17/16
• BOR emailed FWP to let them know they found a suspect veliger (1/2 shell) in a sample collected from Tiber Reservoir. FWP samples from Tiber were prioritized for immediate testing.