New York ·
Beaverkill River Fly Fishing Report - June 14, 2026
BEAVERKILL RIVER
ReportJUN 14 — 21, 2026
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Flow
157CFS
BEAVER KILL AT COOKS FALLS NY
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Water Temp
70°F
Updated 2026-06-14
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Weather
49–81°F
Mostly Cloudy
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Clarity
Clear
Check post-storm
The Beaverkill at Cooks Falls is running 157 cfs at 1.43 ft gauge height with water temps at 70°F — low and warm for mid-June on this freestone stream. Fish are stressed by midday heat; concentrate your time in the cool bookends of the day and target shaded, well-oxygenated riffles.
What's Working — Hot Flies
Egan's GTI Caddis - Olive
#12
Corn-fed Caddis (CDC) Tan
#20
Corn-fed Caddis (CDC) Olive
#20
Soft Hackle Pheasant Tail Jig - Barbless
#12
Blowtorch - Hare's Ear
#12
Tasmanian Devil Hare's Ear
#12–14
Sexy Walts Hare's Ear
#16
Pheasant Tail Tungsten
#20
Top Secret Baetis
#16
Parachute - Blue Wing Olive
#22
Bionic Ant 2.0 - Black
#16
Egan's Thread Frenchie Jig - Olive
#12
Hatch Chart
| Insect | Size | Activity | Prime Time |
|---|---|---|---|
| Caddis — Tan, Olive & Dark Blue Sedge (Hydropsyche / Psilotreta spp.) | #12–18 | 🟢 Peak — multiple species; drowned egg-layers & pupae most productive | Morning & Evening |
| Green Drake (Ephemera guttulata) | #8–10 | 🟢 Active — duns on the water; Coffin Fly spinner fall after dark | Dusk (7:30–9:00 PM) |
| Sulphur / Pale Evening Dun (Ephemerella dorothea) | #16–18 | 🟢 Active — reliable evening hatch in tail-outs and slow glides | Evening (7:00–8:30 PM) |
| March Brown / Gray Fox (Stenonema vicarium) | #12–14 | 🟡 Moderate — duns lifting off riffles; opportunistic rises midday | Midday (11:00 AM–2:00 PM) |
| Blue-Winged Olive (Baetis spp.) | #18–22 | 🟡 Moderate — best on shaded or overcast stretches | Afternoon (2:00–5:00 PM) |
| Terrestrials — Ants & Beetles | #14–16 | 🟡 Emerging — warm sunny afternoons trigger opportunistic surface takes | Afternoon (1:00–5:00 PM) |
Best Time Window
- Sunday Early Morning 5:30–8:30 AM — Coolest water temps; caddis and nymph action in riffles before heat builds
- Sunday Evening 7:00–9:00 PM — Sulphur and Green Drake dry-fly prime time; watch for approaching storms after 5 PM
- Monday Morning 6:00–10:00 AM — Post-storm cool-down; elevated flows and fresh oxygen may trigger aggressive nymph and streamer feeding
Guide's Tip
From the benchWith water temps already at 70°F at midnight, expect them to push 72–74°F by mid-afternoon Sunday — that's thermal stress territory for wild browns. Get on the water at first light (5:30–8:00 AM) when temps are coolest and fish are actively feeding on caddis and nymphs in the riffles. The Sunday evening window (7:00–9:00 PM) is your prime dry-fly shot: sulphurs will pop first in the tail-outs, followed by Green Drakes at dusk — but watch the sky, as storms are forecast after 5 PM. Sunday night's heavy rain (0.5–0.75") will likely bump flows and cool the river by Monday morning, setting up an excellent post-storm nymph session — have your Blowtorch and Frenchie Jig ready for the colored water.
Main Species
Brown Trout
Rainbow Trout
Brook Trout
