Green River tailwater cools into a steady fall brown trout window

What's biting

What's next

Expect the flows to hold steady over the next few days, since both tailwater gauges are reporting similar volumes. Steady, cold, clear water usually concentrates trout in seams and softer edges rather than spreading them across the current, so slow runs and tailouts are worth the first look.

Plan around the middle of the day. With water in the low 50s, the warmest afternoon hours tend to bring the most bug activity, and the Reno Fly Shop (NV) pattern list for Blue Winged Olives and midges translates well to a tailwater like this: small nymphs such as a Perdigon or Zebra Midge fished under a light indicator, with a dry such as a Griffith Gnat ready if fish start rising. Tying Tuesday from MidCurrent also notes that a spare midge-style pattern shines in clear, pressured tailraces.

A waxing crescent moon gives little night light, so early mornings should be quiet and cool. Watch for a change in release volumes, because a bump in flow can push fish out of their holding lanes and shut the bite down for a few hours.

Context

Mid October is on schedule for this stretch of river. Autumn typically brings spawning-color Brown Trout, lower pressure, and more aggressive feeding as cooler nights set in. Anglers should check state regulations for any seasonal closures protecting spawning fish, and avoid wading over redds.