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Montana: North Fork Flathead River Tributaries

Fisheries biologists with the Montana Fish Wildlife and Parks Department in Kalispell are studying the survival and rate of return of bull trout (Salvelinus confluentus) in tributaries of the North Fork Flathead River near Glacier National Park. PIT-tag detection systems were installed in Trail Creek and Big Creek to detect juvenile PIT-tagged bull trout as they emigrate from natal streams and subsequently return as adults to spawn. Each system includes a 46 ft. long array that spans the width of the stream. Because the sites are located in remote areas propane powered thermoelectric generators are used to provide site power.

Project Summary

Application Description:

Instream PIT-tag detection system


Montana Fish, Wildlife & Parks


North Fork Flathead River, Montana

Products Used:

Transceiver: FS1001M
Antenna: 20 ft. and 6 ft. pass-by
Power: Thermoelectric generator

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