Beaverkill River Fly Fishing Report - September 6, 2026

Fly Fishing Report

BEAVERKILL RIVER

Report
SEP 6 — 13, 2026
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Flow
818CFS
BEAVER KILL AT COOKS FALLS NY
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Water Temp
61.7°F
Updated 2026-09-06
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Weather
48–70°F
Patchy Fog
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Clarity
Clear
Check post-storm
Flow is elevated at 818 CFS with a gauge height of 3.32 ft at Cooks Falls — a significant jump from the 303 CFS reported just a week ago, so expect off-color water and limited wading access; water temperature is a comfortable 61.7°F, keeping fish active and feeding.
Best Time Window
  • 6:30 AM - 9:00 AM: Fog-burn streamer window — swing sculpin and bugger patterns through deep pools before boat pressure builds.
  • 10:30 AM - 2:00 PM: BWO and midge hatch window — watch slower eddies for rising fish and switch to small dries or emergers when you see activity.
  • 4:30 PM - 7:00 PM: Evening caddis and Isonychia window — work the pool tails and slower margins with a caddis dry or nymph as light fades.
Guide's Tip
From the benchWith 818 CFS pushing through, forget your usual wading spots and focus on the inside bends, pool tails, and any slack water behind large boulders — that's where trout are stacking to avoid the main current. Run a tight-line nymphing setup with a heavy anchor fly like the Pat's Rubber Legs to get down fast, and keep your drifts short and controlled in the seams. If you can safely access the bank, swinging a Sparkle Minnow Sculpin through the deeper pools at first light can produce aggressive takes from brown trout that are actively hunting in the colored water. Stay off the main stem wading unless you have solid footing — this flow is deceptive and the bottom will be slick.
Main Species
Brown Trout
Rainbow Trout
Brook Trout
Report generated September 6, 2026 — Next update: September 13, 2026