Using Rotary Screw Trap for Fish Enumeration

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NRTG’s MicroCourses offer a dynamic training pathway that’s as flexible as it is enriching to build expertise. Our Using Rotary Screw Trap for Fish Enumeration course, spanning four hours, delivers in-depth training in an easily digestible format. It’s designed to maximize your skills for immediate application.    

Assessment of salmon productivity within a system, collecting out-migrating fish for study, and estimating the size of out-migrating populations are often critical components for conducting effective management of salmon and other diadromous species.  Despite their importance, obtaining reliable estimates can be difficult and costly.  Rotary screw traps (RSTs), or smolt wheels, can be an effective and safe way to get that information that build off trusted methodologies and approaches.  However, these projects also come with many logistical and financial challenges, especially when assessments are happening by less experienced personnel or in new locations.  This MicroCourse will review RSTs; RST safety; how these tools can be used; discuss the various issues, limitations, and constraints associated with RST-based projects; and will facilitate solution-based discussion among the participants to help people prepare for and improve their own projects.   

This MicroCourse is intended to assist practicing field staff in tackling new RST based projects or those facing challenges and looking to make improvements to existing projects.  

Course will be 4 hours long.   

Instructor Profile 

Kris Hunter 

Kris Hunter is a salmon biologist and ecologist with over 20 years of practical experience having trained in salmon physiology and ecology at St. Francis Xavier University, the University of Waterloo, and the University of British Columbia.  Over the past 20 years he has been involved with numerous research projects and led conservation and many aquatic restoration efforts.  Current he works for the Atlantic Salmon Federation as the Regional Director of the Wild Salmon Watersheds program and the Prince Edward Islands Director of Programs, where he helps organizations improve their management and conservation of aquatic ecosystems and salmonid populations.   Kris has worked on rotary screw trap-based projects in the US, in BC, and on the East coast of Canada to aid in fish collection, tracking work, and smolt population assessment.  For several years, while working for DFO he led rotary screw trap projects to aid in collection of Atlantic Salmon smolts for a genetic comparison and for population assessment purposes.  Kris is currently leading 2 new rotary screw trap projects.  One in NL and NB, where as part of the Wild Salmon Watersheds program, he is training local organizations on the technique.   and training local leaders.  Kris also spent over 12 years working as an instructor at the University level during which time he was involved in curriculum development and in developing several education and outreach initiatives.          

Next Available Course

There are no upcoming courses for Using Rotary Screw Trap for Fish Enumeration at this time, please check back again in the future or view our course schedule for more options.
For inquiries on this course, please contact NRTG at: 1-877-388-2172 or

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