The Upper Hot Springs pool in Banff, Alberta, is supplied entirely with natural mineral water from the hot spring for most of the season, although water flow naturally decreases later in the year and there may be times in late fall and winter when the pool is topped up with heated municipal water.
The Banff Upper Hot Springs website provides regular updates on the flow status of natural mineral water into the pool, along with water temperature, and signs on site display the same information.
The water temperature of the outdoor pool normally ranges between 37 and 40 degrees Celsius (or 98 and 104 degrees Fahrenheit), and the Hot Springs closes whenever the water temperature falls below 37 degrees Celsius. Such unplanned closures are infrequent and typically only occur when ambient temperatures are very cold.
