Mapping Salmon: NASCO launches its Wild Atlantic Salmon Atlas

2025 saw the launch of NASCO’s Wild Atlantic Salmon Atlas – a powerful new interactive map that brings together vital information on wild Atlantic salmon populations across the entire North Atlantic.

Covering almost 2,500 rivers, from Portugal to Arctic Russia in the east and New England to Ungava Bay in the west, the Atlas offers an unprecedented view of the status of wild Atlantic salmon across their natural range.

Users can search individual rivers to discover:

• The risk status of wild Atlantic salmon stocks
• Key factors influencing those stocks
• Catchment size and useful links for further information

The information has been provided by the countries that are party to NASCO’s Convention. Data is displayed by country, alongside national overviews showing:

• The percentage of rivers in each risk category; and
• The main impact factors affecting salmon at a national level

Each river has been assigned a Risk Category by the responsible Party or jurisdiction. These categories are designed specifically for the Atlas and reflect domestic stock assessments translated into a common framework agreed by NASCO in 2022. While not a scientific assessment, they provide a valuable, accessible overview of risk status.

The Wild Atlantic Salmon Atlas is a step forward in sharing knowledge, improving transparency and supporting the conservation of this iconic species.

We invite everyone – from scientists and managers to conservationists and the wider public – to explore the Atlas and discover the rivers across the North Atlantic.