Allegheny-area tailwaters settle as one gauge runs high

What's next

The split between the two calmer gauges (531–1,060 cfs) and the one running near 15,500 cfs is the story to watch. High water like that usually needs a few days to drop back into a normal fall range, so stretches fed by that gauge will likely stay off-color and pushy into the weekend before clarity returns.

Once that elevated flow settles, expect water temps across the network to converge closer to the 65–70°F band already showing at the other three stations, a range that keeps fish feeding actively without the metabolic slowdown that arrives once temps drop into the 50s. The First Quarter moon this week doesn't carry the current pull that a full or new moon would, so timing around it matters less than timing around the flow coming down.

Worth planning around: early mornings while flows are still dropping from the high gauge will offer the most stable water, and that window should hold or improve through the weekend if no additional rain moves through.

Context

Mid-September on Allegheny-region tailwaters typically marks the handoff from summer's warm, stable flows to the more variable, rain-driven swings of early fall, and the current split between two steady gauges and one elevated one is a normal shape for this transition. Water temperatures in the upper-60s to 70°F are on schedule for the season, not early or late. As flows and temps stabilize over the coming weeks, conditions on these tailwaters typically settle into a more consistent pattern through early October.