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.

• From: Environment Agency
• Published: 1 April 1999

Documents

Development of a fish counting system for fish passes

Ref: LIT 1025

PDF, 1.98 MB, 28 pages

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Development of a fish counting system for fish passes

PDF, 100 KB, 2 pages

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Details

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.

Published 1 April 1999