The water has warmed to 22.6°C this week, and dissolved oxygen has dropped to…

The water has warmed to 22.6°C this week, and dissolved oxygen has dropped to 7.1 mg/L—a sharp decline from 8 mg/L just four days earlier. Caddisfly larvae, which had shown signs of recovery in recent weeks, are now visibly stressed; these insects are highly sensitive to warm wat