Research projects to-date

In 2014, Université du Québec à Montreal conducted a study that indicated that wake boats with their ballast engaged produce high waves that must travel 300 metres before their power dissipates.

Les impacts des wakeboats sur les rives des lacs Memphrémagog et Lovering, Juin 2014 par Sara Mercier-Blais et Yves Prairie, UQAM

To complete the assessment of the impacts of wake boats with ballasts in operation, the COALITION NAVIGATION mandated the Université Laval to study the impacts of wake boat water columns. The results of this study was such that the water columns churn up the sediments of waterways bottoms in depths of 5 metres or less, and releasing phosphorous in the process which contribute to the proliferation of aquatic plants and algae.

Étude de la remise en suspension des sédiments de fond par les wake boats, Octobre 2015, par Sébastien Raymond, Université Laval, Québec, Qc

Together the UQAM and Université Laval studies suggest that boats with wave amplifiers engaged must have a passage of at least 600 metres and operate in a depth of at least 5 metres.

The sponsors of the Université Laval study which was conducted in 2015 on lake des Sables (Sainte-Agathe-des-Monts) and lake Masson (L’Estérel and Sainte-Marguerite-du-Lac-Masson) concerning the impact of the wake boats on the water columns are:

  • La MRC des Pays-d’en-Haut;
  • la Municipalité d’Estérel;
  • la Municipalité du Sainte-Marguerite-du-Lac-Masson;
  • La Municipalité de Sainte-Agathe-des-Monts; and
  • Le Comité du débarcadère du lac des Sables

Boating Activity and Its Potential Impacts on Inland Waters, by Ana de Santiago, Ph.D. and Gaelle Guesdon, M.Sc., under Rosa Galvez-Cloutier, Ph.D., Ing., Laval University, Quebec, July 2016 (will follow)

In 2016, the COALITION NAVIGATION has mandated the Université Laval to produce a study of the international literature conerning various types of boats in various types of marine environments. The sponsors of this exercise are:

  • La Municipalité du Lac-Sergent
  • L’Association des propriétaires du Lac Sept-Îles et
  • L’Association pour la protection de l’environnement du Lac St-Joseph



The COALITION NAVIGATION is especially grateful to the pioneer sponsors, not only for their generous contribution to science-based legislation, but also for their foresight to establish models for other local governments and community groups to contribute to the completion of this most important work to once and for all have a basis for protecting our waterways in the face of increasing numbers of motor boats that pose threats to the environmental tolerances of our waterways.

In the Summer of 2016, the COALITION NAVIGATION research program will be completed with studies to cover the gaps not addressed in previous research. In particular, the 2016 research will address matters concerning different types of boats in the shallow lakes and jet propulsion boats in BC’s salmon rivers.

Should you know of other municipalities, research organizations and citizens’ groups that may be interested in sponsoring additional research, and/or if you have identified additional research gaps that should be taken into account by the COALITION NAVIGATION , please do not hesitate to contact us at

Lastly, on the impacts of water columns in shallow waters, the video produced by the Association de propriétaires du Lac Sept-Îles offers excellent insights into the turbidity and churning up of lake bottom sediments. (Refer to the right column of our Web site to watch the video called “Reflexion”)