Klamath River Fly Fishing Report - June 21, 2026

Fly Fishing Report

KLAMATH RIVER

Report
JUN 21 — 28, 2026
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Flow
4250CFS
KLAMATH R NR KLAMATH CA
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Water Temp
69.8°F
Updated 2026-06-20
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Weather
49–70°F
Patchy Fog
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Clarity
Clear
Check post-storm
The Klamath is flowing at 4,250 cfs with a gauge height of 8.78 ft and water temps at a comfortable 69.8°F — clear water and prime summer conditions are in your favor right now. Fog burns off by mid-morning Sunday giving way to mostly sunny skies and a high of 66°F, so get on the water early and fish hard before Monday's warmer push.
Hatch Chart
Insect Size Activity Prime Time
Golden Stonefly #6-#10 Moderate 8 AM - 12 PM
Caddis #16-#20 Heavy 6 PM - 8 PM
PMD (Pale Morning Dun) #16-#20 Moderate 10 AM - 2 PM
Midge #20-#22 Light 7 AM - 10 AM
Terrestrials (Ants) #12-#16 Moderate 11 AM - 4 PM
Best Time Window
  • 6 AM - 9 AM: Low-light streamer and midge window before fog lifts — target deep tailouts and slow pools.
  • 10 AM - 2 PM: Prime nymphing and PMD hatch window in riffles and seams as sun warms the water.
  • 5 PM - 8 PM: Evening caddis hatch on the flats — switch to dry flies and fish the slower edges with a drag-free presentation.
Guide's Tip
From the benchWith flows at 4,250 cfs the Klamath has plenty of push — focus your nymphing in the 3–5 ft depth range along the seams where fast water meets slow, and use enough weight to get your fly to the bottom in the first third of the drift. During the afternoon terrestrial window, work the shaded north-facing banks where overhanging alders drop ants and beetles directly into the current. Sunday's fog will clear by 8–9 AM, so use that early low-light period to throw streamers through the deeper tailouts before the sun hits the water and fish go subsurface. Keep an eye on flows Sunday evening — if Monday's weather pushes water up, get out early Monday morning before clarity deteriorates.
Main Species
Steelhead
Chinook Salmon
Rainbow Trout
Fly Fish Food
Report generated June 21, 2026 — Next update: June 28, 2026