Streamflow surged nearly **25-fold in two weeks**, with the gauge jumping from…

Streamflow surged nearly 25-fold in two weeks, with the gauge jumping from a low of 157 cubic feet per second to 3,970 at peak—a gage height swing from 2.82 to 6.77 feet. The timing collided with mayfly emergence, when immature insects are most vulnerable to violent scouring. In