Green River trout stay tuned to cool, steady tailwater flows

What's biting

What's next

With a New Moon today, expect low night light and a feeding rhythm that leans on dawn and dusk. Plan the first and last two hours of daylight, when cool water and low light pull fish up from deeper holding lies. Midday tends to fish slower, so use that window to move and scout rather than grind one run.

Flows near 2,000 to 2,700 cfs are brisk, so expect fish to hold along softer seams, inside bends and behind current breaks rather than in the main push. Per MidCurrent, a beaded purple nymph suits dim, overcast days, and spare midge patterns suit clear, pressured tailrace water. If the cool trend continues, the 51°F stretch should stay the most consistent, with the 56°F reach fishing best early before the afternoon warm-up.

For the high lakes, falling night temperatures should keep Lake Trout and Brook Trout comfortable in shallower water. Check state regulations and any seasonal closures before you go.

Context

Mid-October is the fall transition for this part of Utah. Brown Trout and Brook Trout are typically moving toward pre-spawn behaviour, which can make them more aggressive and more concentrated, while Rainbow Trout often feed hard ahead of winter. Water in the low-to-mid 50s is on schedule for the season, and these readings are typical of what anglers expect as nights cool and daylight shortens.

Spawning fish and redds deserve care at this time of year. Avoid wading through gravel beds where possible and release fish promptly.