2020 electrofishing surveys
Tuesday October 20th, 2020
Our monitoring team have been completing this year’s round of electrofishing, with a focus on the Nar, Upper Wensum and Tiffey, where river restoration works are either in progress, or in the development phase.
Electrofishing involves temporarily stunning fish, so that they can be identified, measured and counted. After a short recovery period, the fish are returned to the river unharmed.
Although the results do not provide a definitive assessment of fish stocks, the surveys offer a good indication of how these species are faring in a particular stretch of a watercourse, and these results can then be compared with post-work surveys to determine the success of any restoration works e.g. a new fish pass construction or river channel.