Susquehanna tributaries ease into prime fall feeding window

What's next

Barring new rain, look for the tributary gauges to hold steady or drift slightly lower over the next two to three days as they settle toward typical October base flow. The West Branch stem at 3,370 cfs should continue a gradual recession through the week, which will firm up wading access and current speed on the larger water faster than it will change the temperature.

With the moon in a Waning Crescent phase, nights are getting darker ahead of the new moon, which typically sharpens low-light feeding activity at dawn and dusk. That makes early and late windows worth prioritizing over the next few days, especially as the smaller creeks stabilize. Weekend conditions should track close to today's numbers unless weather moves in.

Context

A mid-50s to low-60s water-temperature spread in early October is on schedule for the Susquehanna and Allegheny region, which sits in its typical early-fall transition: tributaries cool and drop toward base flow first, while larger stem rivers carrying more volume lag behind on both temperature and flow recession. Nothing in today's readings looks early or late for the calendar date.