Klamath River Fly Fishing Report - August 16, 2026

KLAMATH RIVER
ReportAUG 16 — 23, 2026
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Flow
2330CFS
KLAMATH R NR KLAMATH CA
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Water Temp
70.9°F
Updated 2026-08-15
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Weather
52–69°F
Patchy Fog
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Clarity
Clear
Check post-storm
Water is running 70.9°F at 2,330 CFS — warm enough to push resident trout tight to cold-water tributaries and shaded seams, but right in the wheelhouse for early fall-run Chinook pushing into the lower river. Clarity is good, so low-light presentations and precise drifts will be the difference-maker today.
What's Working — Hot Flies

Corn-fed Caddis (CDC) Tan #20
#20

Corn-fed Caddis (CDC) Olive #20
#20

Bionic Ant 2.0 - Black #16
#16

Bionic Ant 2.0 - Brown #12
#12

Parachute - Blue Wing Olive #22
#22

Tungsten Split Case Nymph - PMD #20
#20

Egan's Thread Frenchie Jig - Olive #12
#12

Slush Egg Apricot - 14 #14
#14

Egan's Poacher - Olive #12
#12

Coffey's CH Sparkle Minnow Sculpin #6
#6

Black Zebra Midge(TBH) #20
#20

Bionic Hopper - Tan #12
#12
Hatch Chart
| Insect | Size | Activity | Prime Time |
|---|---|---|---|
| Caddis (Tan/Olive) | 16-20 | Moderate | 6 PM - 8 PM |
| PMD (Pale Morning Dun) | 18-20 | Light | 9 AM - 11 AM |
| Blue Wing Olive | 20-22 | Light | 7 AM - 9 AM |
| Terrestrials (Ants) | 12-16 | Moderate | 11 AM - 3 PM |
| Chinook Salmon (migratory) | N/A | Heavy | 5 AM - 8 AM |
| Midge | 20-22 | Light | 6 AM - 8 AM |
Best Time Window
- 5:30 AM - 8:00 AM: Prime low-light window for early Chinook and thermal-refuge trout; swing streamers and dead-drift egg patterns through deeper pools before temps climb.
- 9:00 AM - 11:00 AM: Fog lifts and PMDs trickle off tailouts; switch to dry flies and nymphs in shaded riffles near tributary confluences.
- 6:00 PM - 8:00 PM: Evening caddis activity picks up as temps cool; work CDC caddis and terrestrials along current seams and undercut banks for the day's best dry-fly action.
Guide's Tip
From the benchWith water temps at 70.9°F, resident trout are stressed in the main stem — find them stacked at the mouths of cold-water tributaries and in deep, shaded runs where temps drop a few degrees. Fish these thermal refuges early with a nymph set 18–24 inches deep, then switch to a terrestrial or dry-dropper along shaded alder banks once the fog burns off around 9 AM. For salmon, focus your effort in the first and last 45 minutes of light, swinging a Sparkle Minnow or Poacher through the deeper, slower pools near the estuary where fish are staging. Keep your fish in the water and minimize handling time — warm water reduces oxygen and recovery time is critical.
Main Species
Steelhead
Chinook Salmon
Rainbow Trout
