Upper Delaware, New York
West Branch Delaware Fishing Report: September 2, 2026
The West Branch is cold and fishable at Hale Eddy with 581 cfs and 52.9 F water, but today's rain, thunderstorms, and heavier overnight rain risk make conservative access important.
- Status
- good
- Flow trend
- stable
- Best window
- Late morning through afternoon cloud and shower windows, with storms treated as a hard stop
- Best methods
- dry flies, wet flies, nymphs
Quick Summary
The West Branch remains the strongest trout option in this New York set because Hale Eddy is cold, moderate, and close to yesterday morning's flow. USGS showed 581 cfs, 2.91 feet, and 52.9 F at Hale Eddy during the 8 AM check. Current Upper Delaware source context reported a Cannonsville release near 450 cfs, good early clarity after yesterday's storms, scattered flying ants, Isonychias, Cahills, hebes, and a few late sulphurs, with algae still making the upper West a poor nymphing choice. Fish the cloud and shower windows, but keep the plan short and flexible because the National Weather Service is calling for thunderstorms today and 1 to 2 inches of rain tonight.
Conditions Snapshot
| Field | Value |
|---|---|
| Status | Good. Cold tailwater water and moderate flow support a real trout window, but thunderstorms and heavier overnight rain add safety risk |
| Flow | 581 cfs at Hale Eddy during the 8 AM check |
| Gauge Height | 2.91 feet at Hale Eddy |
| Water Temp | 52.9 F at Hale Eddy |
| Clarity | Not reported by official gauges; current local context described the river as looking good early after yesterday's storms |
| Trend | Stable to slightly falling compared with yesterday morning at Hale Eddy |
| Best Window | Late morning through afternoon cloud and shower windows, then evening only if lightning has cleared the valley |
| Best Method | Olive, ant, Isonychia, Cahill, hebe, and late sulphur dries or emergers; wet flies and light nymphs where algae is not fouling the rig |
| Wadeability | Limited. Use known gravel and soft edges, avoid pushy crossings, and do not stay exposed during thunderstorms |
Weather
For Hancock and Hale Eddy, the National Weather Service forecast calls for a high near 73 F, mostly cloudy skies, southeast wind around 6 mph, and showers or thunderstorms becoming likely from early afternoon into the evening. Rainfall during the day is forecast to stay light, but tonight's forecast carries a 100 percent chance of showers and thunderstorms with 1 to 2 inches of rain possible. That setup can help olives and late-summer mayflies, but radar and a clean exit matter more than squeezing out one more drift.
River Notes
Hale Eddy is in a comfortable late-summer tailwater range. The river is cold enough for trout, the flow gives fish edge cover without being excessive, and current local context still supports dry-fly fishing when light, cloud cover, and bugs line up. The main risk is not the starting gauge reading; it is what thunderstorms can do to feeder streams, clarity, and safe access after you have already committed to a float or wade.
The upper West algae note still matters. If nymphs are coming back dirty, do not keep adding split shot and scraping bottom. Move to cleaner lower-river lanes, swing a wet fly, or commit to dries and emergers along banks, foam seams, slicks, and tailouts. If storms add color later, a short streamer window from a boat can be useful, but lightning should end the session immediately.
Hatch Activity
Official gauges do not report hatches. Current Upper Delaware source context supports Blue Winged Olives, flying ants, Isonychias or Slate Drakes, Light Cahills or Summer Stenos, hebes, tan caddis, and a few late sulphurs around colder tailwater sections.
| Hatch | Size | Notes |
|---|---|---|
| Blue Winged Olive | 16-24 | Best under clouds, damp air, shaded slicks, and soft seams |
| Flying Ant | 18-24 | Important late-summer terrestrial along banks, foam lines, and quiet tailouts |
| Isonychia or Slate Drake | 10-14 | Fish dries, wets, or swimming nymphs along broken banks and riffle edges |
| Light Cahill, Summer Steno, or Hebe | 14-18 | Useful for mixed evening rise forms and searching faster edge water |
| Sulphur | 16-20 | Late and sporadic, most relevant around colder upper tailwater water |
| Tan Caddis | 16-20 | Fish pupa, soft hackles, or sparse dries around riffles and shaded seams |
Recommended Flies
| Category | Fly | Size | Notes |
|---|---|---|---|
| Dry | BWO Comparadun, CDC Olive, or olive emerger | 16-24 | Use on shaded slicks, foam seams, and small olive feeders |
| Dry | Flying Ant, foam ant, or small beetle | 18-24 | Fish banks and tailouts before changing flies repeatedly |
| Dry | Isonychia Parachute, Slate Drake, Light Cahill, Summer Steno, or hebe imitation | 10-18 | Cover broken banks and mixed larger mayfly activity |
| Dry | Sulphur Sparkle Dun or emerger | 16-20 | Keep ready for scattered tailwater feeders rather than making it the whole plan |
| Wet | Soft Hackle Pheasant Tail, Isonychia Wet, or partridge soft hackle | 12-18 | Swing riffle tails and bank seams when rises are scattered |
| Nymph | Pheasant Tail, Frenchie, caddis pupa, or Isonychia Nymph | 12-20 | Use where the bottom stays clean; check often for algae, especially up top |
| Streamer | Small olive or black sculpin, Woolly Bugger, or sparse baitfish pattern | 4-8 | Worth a storm-stain test from a boat, but get off the water during lightning |
Tactics
Start by watching banks, foam seams, and slicks for olives or ants before wading through them. A long leader with a single dry or dry-and-emerger rig is the cleanest approach when fish show. If rises are scattered, swing a soft hackle or Isonychia wet before going to bottom contact. Keep exits simple, check radar often, and avoid long commitments ahead of tonight's heavier rain.
Gauge Links
| Gauge | Flow | Temp | Link |
|---|---|---|---|
| WEST BRANCH DELAWARE RIVER AT HALE EDDY NY | 581 cfs | 52.9 F | USGS 01426500 |
Sources
Official sources checked: USGS station 01426500 and the National Weather Service forecast for the Hancock and Hale Eddy, NY area. This report is an original Custom FlyBox summary based on current official gauge and weather data, with local public conditions reports reviewed separately for hatch, method, clarity, release, and safety context.