I went to a conference in Canmore that looked at all these issues. Hydrological monitoring has identified tremendous gaps across the land—right from the headwaters, in every direction from what is hydrologically the highest point in Canada, somewhere just outside of Canmore. There are huge gaps in our knowledge about the headwaters, all that flows downstream, and our groundwater. We have an enormous challenge as a country to sort this out, and some jurisdictions are going to be in dire straits, probably much sooner than they thought.
On May 12th, 2009. See this statement in context.