Just when I thought we'd broken the back of the heat wave ...
These take effect on Wednesday - tomorrow - 26 July as at 2:00 pm, for a minimum of 14 days. All streams in ES1, no angling from 2:00 pm til midnight.
https://mywildalberta.ca/fishing/advisories-corrections-closures/time-of-day-angling-restrictions.aspx
ps Thanks to the folks at Iron Bow for the head's up on this.