Pacific Salmon Stock Management Units

Salmon have a complex hierarchical population structure extending from groups of salmon at individual spawning sites all the way up to taxonomic species. These independently functioning aggregates are defined as Conservation Units (CUs) in the Wild Salmon Policy. A stock management unit (SMU) is a group of one or more CUs that are managed together with the objective of achieving a joint status.

There are 69 SMUs containing 468 CUs. In 2022, eight SMUs units did not have enough information to provide an assessment. Sixty-one units were assigned a forecast. There are ongoing requests to represent salmon information for these areas. Salmon are assessed and managed at different levels for different needs. The layers in this dataset include administrative areas, stock management units, and conservation units.

The data included is a shapefile containing a single feature class layer represented in point and polygon form, as well as a csv table (attributes) to present Stock Management Unit information in a simple, visual way.

Data and Resources

Additional Info

Field Value
Last Updated April 17, 2026, 19:31 (UTC)
Created April 17, 2026, 19:31 (UTC)
contact_email Dawn.Lewis@dfo-mpo.gc.ca
contact_person {"en": "Government of Canada; Fisheries and Oceans Canada; Ecosystems and Oceans Science/Pacific Science/Stock Assessment and Research Division", "fr": "Government of Canada; Fisheries and Oceans Canada; Sciences des écosystèmes et des océans/Science Pacifique/Division de l'Évaluation et recherche des stocks"}
criticality_level []
data_dictionary EPSG:4326,https://epsg.io,
geographic_scope []
open_canada_collection fgp
open_canada_date_published 2024-09-05 00:00:00
open_canada_keywords {"en": ["SMU", "CU", "stock", "outlook", "Geographic data", "Maps", "Geographical maps", "Salt water fish"], "fr": ["UGS", "UC", "stock", "perspective", "Données géographiques", "Carte", "Carte géographique", "Poisson de mer"]}
open_canada_subject ["government_and_politics"]
sensitivity_level unrestricted
title_fr Unités de gestion des stocks de saumon du Pacifique
update_frequency as_needed