Cooling Flows Signal the Fall Turn on PA's River Systems

What's next

Expect the elevated gauge to ease back toward the other two readings over the next few days absent new rain, clearing the stain and making structure easier to read. Fishing the Midwest's Mike Frisch notes that a plain bottom-bouncer-and-snell rig becomes a fall staple as water cools, a presentation worth having rigged as these systems settle into the mid-60s.

With the moon waning toward last quarter, dawn and dusk windows should stay the most productive stretches to plan around this week, particularly once the higher flow levels off.

Context

Mid-60s water in late September is on schedule for the Susquehanna and Allegheny freshwater systems, which typically move through their fall turnover from late September into October as days shorten and surface temps continue to drop. The current spread between a high, swollen reach and two calmer tributary-scale reads is typical for this stretch of the calendar, where a single rain event can separate one gauge from its neighbors for days at a time.