Rogue River Fly Fishing Report - September 20, 2026

Fly Fishing Report

ROGUE RIVER

Report
SEP 20 — 27, 2026
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Flow
1000CFS
ROGUE RIVER AT GRANTS PASS, OR
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Water Temp
62.2°F
Updated 2026-09-19
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Weather
51–91°F
Mostly Clear
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Clarity
Clear
Check post-storm
Flow is running at 1,000 CFS with a gauge height of 0.85 ft at Grants Pass — low, clear conditions that demand precise presentations and lighter tippet. Water temperature is a comfortable 62.2°F, keeping fish active and the salmon bite solid.
Hatch Chart
Insect Size Activity Prime Time
Blue-Winged Olive (Baetis) #20-22 Moderate 10 AM - 1 PM
Caddis #18-20 Moderate 6 PM - 8 PM
Terrestrials (Hoppers/Ants) #12-16 Heavy 11 AM - 4 PM
Midge #20-22 Light 7 AM - 9 AM
PMD #18-20 Light 11 AM - 2 PM
Best Time Window
  • 6 AM - 9 AM: Pre-sun nymphing and streamer swings in deep holding lies before the heat builds — best shot at salmon and large trout.
  • 10 AM - 1 PM: BWO and PMD hatch window in glassy tailouts; switch to fine tippet and small dries or emergers for rising fish.
  • 5 PM - 8 PM: Terrestrial and caddis evening bite along shaded banks and riffled runs — prime dry-fly action as temperatures drop.
Guide's Tip
From the benchWith flows at 1,000 CFS and gin-clear water, fish are spooky — stay low, approach from downstream, and extend your tippet to at least 5X (6X in the tailouts). During the midday heat pushing toward 91°F, focus your dry-fly effort on shaded canyon walls and north-facing banks where terrestrials are falling and fish feel safe looking up. For salmon, work the deeper green-water slots in the early morning before the sun hits the water, swinging a Sparkle Minnow Sculpin on a slow, deliberate swing with a mend to keep it in the zone. As temperatures cool after 5 PM, switch back to caddis dries in the riffled runs — that evening window will be your most productive dry-fly fishing of the day.
Main Species
Steelhead
Chinook Salmon
Coho Salmon
Report generated September 20, 2026 — Next update: September 27, 2026