Research and analysis

Development of a fish counting system for fish passes

Development of a low-cost, user-friendly system for measuring the success of fish passes, structures aimed at helping fish overcome obstructions in rivers.

Documents

Development of a fish counting system for fish passes

This file may not be suitable for users of assistive technology. Request an accessible format.

If you use assistive technology (eg a screen reader) and need a version of this document in a more accessible format, please email enquiries@environment-agency.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

Development of a fish counting system for fish passes

This file may not be suitable for users of assistive technology. Request an accessible format.

If you use assistive technology (eg a screen reader) and need a version of this document in a more accessible format, please email enquiries@environment-agency.gov.uk. Please tell us what format you need. It will help us if you say what assistive technology you use.

Detail

A new method for counting fish as they move through a fish pass. An accompanying manual explains how to record underwater video images and use them to monitor fish. The method can be used to assess the effectiveness of a fish pass or existing fish counter, as well as estimating returning stock of salmon and trout.