"Annual rate of change in the number of high flow days at monitoring stations, Canada, 1970 to 2023",,,,, ,,,,, Province or territory,Total number of stations ,Increasing trend (percentage of stations),Stable trend (percentage of stations),Decreasing trend (percentage of stations),Uncertain (percentage of stations) Newfoundland and Labrador,17,12,47,35,6 Prince Edward Island,1,100,0,0,0 Nova Scotia,10,40,40,20,0 New Brunswick,27,22,63,15,0 Quebec,34,0,71,29,0 Ontario,58,12,64,24,0 Manitoba,21,14,76,5,5 Saskatchewan,37,62,27,0,11 Alberta,115,14,71,10,5 British Columbia,133,20,69,5,6 Yukon,13,8,62,31,0 Northwest Territories,12,33,50,17,0 Nunavut,0,0,0,0,0 ,,,,, "Note: Percentages may not add up to 100 due to rounding. The indicator is based on a statistical analysis of the annual number of high flow days at monitoring stations over the 1974 to 2023 period. It shows the prevalence of high flow conditions (above the 95th percentile of all daily flow values for a monitoring station compared to a 30-year normal period from 1991 to 2020). This may be linked to flooding events but does not necessarily represent actual recorded or reported events. Positive values indicate that the number of days with very-high flows over the 1974 to 2023 period have increased, negative values indicate a decrease, and zero values indicate that the number of high flow days have remained the same. For more information, please see the Data sources and methods (www.canada.ca/en/environment-climate-change/services/environmental-indicators/water-quantity-canadian-rivers.html#DSM) section.",,,,, Environment and Climate Change Canada (2025) National Water Data Archive (https://www.canada.ca/en/environment-climate-change/services/water-overview/quantity/monitoring/survey/data-products-services/national-archive-hydat.html) (HYDAT).,,,,, Available on the Environmental indicators website (www.canada.ca/environmental-indicators).,,,,,