St. Lawrence River

St. Lawrence River

Lake Superior regulation affects levels and flows in the lower St. Marys River. Unnatural changes in outflow can occur at the beginning of each month and the Board of Control has been working on methods to quantify impacts associated with regulation to better accommodate environmental objectives.
During the high water event of 2017, the Board responded to the communications challenge on many fronts.

Historically low 2018 water levels in Lake St. Lawrence have prompted concerns that fish populations and habitat may be locally impacted.

The International Lake Ontario-St. Lawrence River Board have produced a documentary and short videos that cover topics on specific details of regulation practices and constraints on the Lake Ontario St. Lawrence River System during high water conditions.

During both the International Lake Ontario-St. Lawrence River Study (LOSLRS) and the International Upper Great Lakes Study (IUGLS), coastal wetland performance indicators were developed and used to help assess how changes in water level management strategies may impact wetland vegetation response.

The unique physical, chemical and biological characteristics of the St. Marys River, which is the outlet of Lake Superior connected to Lake Michigan-Huron downstream, provide for a rich and diverse environment that is a vitally important aquatic resource in the upper Great Lakes system.

The Canadian Precipitation Analysis (CaPA) is an operational near real-time gridded precipitation product from Environment Canada available since April 2011 for North America.

In line with the final goal established in 2015 of generating a 30-year, 15-km, daily hindcast of precipitation, evaporation and runoff for all Canada/U.S. transboundary watersheds, this project focuses on the production of a 5-year hindcast of the Canadian Precipitation Analysis system (CaPA), the…

The Canadian Precipitation Analysis (CaPA) is an operational near real-time gridded precipitation product from Environment Canada available since April 2011 for North America.

This is a continuation of ongoing GLAM efforts to collect data to support model validation.