River Tees fish counts

15.4.2026 - | Her Majesty's Revenue and Customs

Daily and monthly upstream counts for salmon and sea trout at the fish counter at the Tees Barrage on the lower River Tees.

We aim to release this data once a month, in both ODS and Excel format.

River Tees daily and monthly fish counts

ODS, 9.51 KB

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River Tees daily and monthly fish counts

MS Excel Spreadsheet, 20.7 KB

This file may not be suitable for users of assistive technology.

Request an accessible format.
If you use assistive technology (such as a screen reader) and need a version of this document in a more accessible format, please email [email protected]. Please tell us what format you need. It will help us if you say what assistive technology you use.

The fish counter at the Tees Barrage only monitors the upstream migration of salmon and sea trout through the fish pass.

Additional routes exist through the:

To help fish migrate, the Environment Agency and the Canal and River Trust keep the main barrage gate open as much as possible. When it’s open, more fish migrate through this gate than through the fish pass. This may explain the lower fish counts when the main barrage gate is open.



https://www.gov.uk/government/statistical-data-sets/river-tees-upstream-fish-counts