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What We Do

Our Work

The Tweed Foundation works throughout the Tweed and Eye catchments, using a variety of monitoring methods to provide objective, scientific information on the rivers, the environment, the fish and their fisheries.  With this information we can advise on the best management practices for the river.

Tweed Fisheries Management Plan

At the core of our work is the Tweed Fisheries Management Plan.  The Plan delivers fisheries management policy on the river and outlines our work priorities for each coming year. 

There are five key elements within the Management Plan: the environment, Salmon, Sea trout, Brown trout, and Grayling and other fish species in the Tweed system.  Any work we carry out ties into at least one of these elements.   

Current Initiatives

Smolt Tracking Study

2021 is the third year of our Smolt Tracking Study monitoring the in river survival of smolts.  By tagging a sample of smolts leaving the Gala Water with tiny tracking tags, we can monitor how many survive their journey out to sea and where most smolt losses occur in the river.    

Return Rates of Salmon

There are question marks over how many of the Salmon leaving our rivers are returning as adults to spawn. To try and answer these questions, the Tweed Foundation are using Passive Integrated Transponder (PIT) tags to monitor the return rates of Salmon to the Gala Water.

Tweed Trout + Grayling Initiative

The Tweed Trout + Grayling Initiative (TTGI) is a flagship programme driving the self sustained management of the Tweed's Trout and Grayling fisheries.

Adult Tagging

By floy tagging adult Salmon upon their return to the Tweed, we can monitor the proportion of running fish that are caught by anglers and how often they are caught.

Tree overhanging the river.

Temperature Monitoring

We are part of the Scottish River Temperature Monitoring Network (SRTMN), a national project run by Marine Science Scotland to monitor the water temperatures in rivers throughout Scotland.

Regular Monitoring


Every year we carry out an extensive electro-fishing monitoring programme to monitor the numbers of juvenile Salmon and Trout throughout the Tweed catchment.

Fish Counters

We run three fish counters throughout the catchment, one on each of the Ettrick, Gala and Whiteadder.  This enables us to monitor the numbers of running fish returning to each tributary to spawn.

Gala Smolt Trap

We run the Gala Smolt Trap each year to get an estimate of the total smolt production from the Gala Water.

Catch Records

With catch records going back to the 19th century, we can monitor the long term trends in the Tweed's Salmon populations.

Tree overhanging the river.

Scale Reading

By "reading" the growth rings on fish scales (much like on trees), we can learn about the life histories of individual fish.

A goosander, a fish eating bird.


We are carrying out several studies to monitor the effects of bird predation on the numbers of fish in the Tweed.

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