A swim in the St. Lawrence: will you dare?
The shores of the St. Lawrence offer beautiful swimming sites. Several sites that were abandoned in the past due to poor water quality are now accessible again for the enjoyment of young and old.

The shores of the St. Lawrence offer beautiful swimming sites. Several sites that were abandoned in the past due to poor water quality are now accessible again for the enjoyment of young and old.
Environmental DNA is an innovative method used to detect different species in the aquatic environment. Similar to barcodes used to identify items at the grocery store, eDNA allows biologists to identify different aquatic species through their unique genetic fingerprint. By releasing cells and other biological material such as skin particles, mucus, urine and feces into the environment, scientists are able to identify a species with its eDNA.
Our scientists are assessing the effects of pesticides and changes in agricultural practices on fish and invertebrates.
The St. Lawrence is one of the busiest shipping lanes in the world with over 5,000 ships using this passage every year, which increase the risk of collision with marine mammals. How to reconcile navigation and marine life protection?
How much do you know about the riches of the St. Lawrence River? Plunge into the world of recreational boating and commercial shipping with our guide, “Navigation on the St. Lawrence: Echo of the Past, Path to the Future.”
Two atlases have been produced to give local communities the tools they need to conserve natural areas in the St. Lawrence.
The governments of Canada and Quebec are announcing an investment of $39 million and $25 million respectively for the five-year period 2021-2026.
The latest version of the Overview of the State of the St. Lawrence 2019 is now published! Updated every five years by the Working Group on the State of the St. Lawrence Monitoring, the Overview provides a diagnosis of the state of the St. Lawrence River. To do so, partners analyze at regular intervals, some 20 environmental indicators related to water, sediment, biological resources, shorelines and uses of the St. Lawrence River. The results make it possible to assess the state of the ecosystem and to provide guidance for decision-making towards ensuring conservation and sustainability of the St. Lawrence.
The 7th edition of the St. Lawrence Forum, which took place on May 11, 13 and 18 under the theme "science at the service of decision-makers ", attracted more than 230 participants from various sectors.
To date, there are still very few studies on the presence of cancer drugs in the St. Lawrence. Since this is a subject of interest to our scientists, they have decided to conduct research to evaluate the impact of these substances on aquatic organisms.