Upper Delaware, New York
West Branch Delaware River Fishing Report: May 31, 2026
The West Branch remains cold, steady, and fishable at Hale Eddy, with a current Delaware report confirming nymphs, dries, caddis, larger mayflies, olives, sulphurs, and an evening wind break as the main plan.
- Status
- good
- Flow trend
- stable
- Best window
- Afternoon into evening, with the cleanest dry-fly work during calmer light
- Best methods
- dry flies, nymphs, wet flies
Quick Summary
The West Branch is in good shape this morning, with a steady tailwater flow and cold water at Hale Eddy. USGS showed 561 cfs, 2.87 feet, and 43.5 F at 7:45 AM EDT, essentially unchanged from the 8 AM pass. A fresh May 31 Delaware source check reported fish taken on both nymphs and dries yesterday, with caddis, March Browns, Gray Fox, Cahills, Green Drakes, olives, and sulphurs still in the mix. Official weather still keeps the wind manageable at 2 to 8 mph from the northwest near Hancock, so the best dry-fly window should be afternoon into evening, especially if the surface calms late.
Conditions Snapshot
| Field | Value |
|---|---|
| Status | Good |
| Flow | 561 cfs at 7:45 AM EDT |
| Gauge Height | 2.87 feet |
| Water Temp | 43.5 F |
| Clarity | Not reported by official gauges; verify at your access |
| Trend | Stable to slightly lower from yesterday morning |
| Best Window | Afternoon into evening, with the cleanest dry-fly work during calmer light |
| Best Method | dry flies; nymphs; wet flies |
| Wadeability | Good overall, with normal caution in deeper slots and ledge water |
Weather
For Hancock, NY, the National Weather Service forecast calls for a high near 72 F with partly sunny skies. Northwest wind is forecast at 2 to 8 mph, a meaningful improvement from the gustier north wind that limited open-water presentations yesterday. Tonight brings a low near 48 F with a slight chance of rain showers between 10 PM and 2 AM. There were no active NWS alerts for the checked point at report time.
River Notes
Hale Eddy is still in a comfortable wading and floating range, and the morning temperature gives trout a wide safety margin on the upper West Branch. The lower, steadier flow should let anglers fish dry flies in bank seams, riffle shelves, and tailouts without fighting heavy current. The new May 31 local report did not change the flow story, but it does confirm that yesterday's wind did not shut the river down and that both nymphs and dries remain valid. If the river is quiet early, nymph or swing wets through broken water until the afternoon bugs or evening spinners create targets.
Hatch Activity
Late-May Delaware activity remains broad. Current May 31 source context supports caddis, March Browns, Gray Fox, Cahills, sulphurs, Green Drakes, olives, and evening spinners. Green Drakes and Coffin Flies are worth carrying for low light, but caddis, sulphurs, larger mayflies, and spinners are the steadier working box.
| Hatch | Size | Notes |
|---|---|---|
| Blue Sedge / Tan Caddis | 14-18 | Fish pupa, wets, spent caddis, and adults through riffles and edge seams |
| March Brown / Gray Fox | 10-14 | Good visible profile for broken water, banks, and searching when rises are scattered |
| Invaria Sulphur | 14-16 | Important afternoon and evening mayfly in softer current lanes |
| Cahill | 12-16 | Carry for lighter mayflies mixed into afternoon and evening rise forms |
| Isonychia | 10-12 | Nymphs and wets are useful in faster seams before surface feeding settles in |
| Blue Winged Olive | 18-22 | Carry for shaded water, clouds, or quieter fish on smaller bugs |
| Green Drake / Coffin Fly | 8-10 | Worth having for low light and heavier rise forms |
| Rusty / Ginger Spinner | 10-20 | Key evening pattern if the surface goes flat enough for spinner work |
Recommended Flies
| Category | Fly | Size | Notes |
|---|---|---|---|
| Dry | Elk Hair Caddis or Spent Caddis | 14-18 | Search riffles, seams, and soft banks when caddis are active |
| Dry | March Brown / Gray Fox Parachute | 10-14 | Use as a visible mayfly in broken water and against banks |
| Dry | Sulphur Comparadun | 14-16 | Match yellow mayfly activity later in the day |
| Dry | Cahill or Light Cahill | 12-16 | Use when lighter mayflies are mixed with sulphurs and larger bugs |
| Dry | Green Drake or Coffin Fly | 8-10 | Keep ready for low-light drake water, not as the only plan |
| Dry | Rusty or Ginger Spinner | 10-20 | Fish to calm evening rise forms with longer leaders |
| Nymph | March Brown or Green Drake Nymph | 8-12 | Good early subsurface profile before larger mayflies emerge |
| Nymph | Caddis Pupa | 14-18 | Dead drift or swing through riffle tails before adult caddis show |
| Wet | Partridge and Yellow or Partridge and Orange | 12-16 | Useful when bugs are present but fish are not holding steady rise lanes |
| Streamer | Small Olive Sculpin | 4-8 | Best early, late, or if overnight rain adds stain |
Tactics
Start with a dry-dropper, caddis pupa, or larger mayfly nymph in riffles and bank seams if you do not see fish up. As light and temperature build, watch for caddis movement, sulphurs, Cahills, and bigger mayflies; switch to a single dry only when the rise forms are steady enough to identify. The official forecast wind is light enough to fish longer dry-fly leaders, but keep a wet-fly option ready for broken water and remember that local wind along the river can still be stronger than the point forecast. The Hale Eddy temperature is cold this morning, yet lower system or freestone water can warm faster on a 72 F day, so carry a thermometer if you leave the upper tailwater and stop targeting trout if readings approach 68 F.
Gauge Links
| Gauge | Flow | Temp | Link |
|---|---|---|---|
| WEST BRANCH DELAWARE RIVER AT HALE EDDY NY | 561 cfs | 43.5 F | USGS 01426500 |
Sources
Official sources checked: USGS station 01426500 and the National Weather Service forecast and alerts for the Hancock, 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, access, and method context.