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River Spey Hydroacoustic Counter Project 1996-2001 River Spey Hydroacoustic Counter Project 1996-2001

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Date added: 06/17/2009
Date modified: 02/06/2012
Filesize: 331.56 kB
Downloads: 392

This report outlines the operation an acoustic counter in the lower River Spey.  The results indicate that the counter is detecting between 50% and 60% of upstream fish passage in its present location, Collie Pot, Delfur. Extensive data on fish passage have been collected. Timing of fish movement was affected by the rate of water discharge and water temperature. Trends in fish passage rates correlate closely with Catch Per Unit Effort (CPUE) data from the adjoining rod fishery.