Upper Delaware, New York
West Branch Delaware Fishing Report: August 10, 2026
The West Branch remains the best New York trout option today, with a 642 cfs Hale Eddy flow, cold 49.5 F water, summer sulphurs, small olives, and afternoon storm risk to watch.
- Status
- good
- Flow trend
- falling
- Best window
- Midday on the upper West Branch, then low-light edges if storms stay away
- Best methods
- dry flies, wet flies, nymphs
Quick Summary
The West Branch is still in good summer shape, especially compared with the warmer freestones. USGS showed 642 cfs, 3.03 feet, and 49.5 F at Hale Eddy during the 8 AM report check, down from yesterday morning's 674 cfs report value and supported by a 500 cfs Cannonsville release in current Upper Delaware source context. Expect a practical dry-fly window around the cold upper river, with summer sulphurs, small olives, Isonychias, Cahills, and tan caddis still relevant. Keep a close eye on afternoon thunderstorms and move off exposed water if lightning builds.
Conditions Snapshot
| Field | Value |
|---|---|
| Status | Good. Cold tailwater temperature and moderate flow keep the West Branch fishable, but storms are a real afternoon constraint |
| Flow | 642 cfs at Hale Eddy during the 8 AM report check |
| Gauge Height | 3.03 feet at Hale Eddy |
| Water Temp | 49.5 F at Hale Eddy |
| Clarity | Not reported by official gauges; current local context continues to describe the West Branch as the clear, cold-water option in the system |
| Trend | Falling from yesterday's 674 cfs report value at Hale Eddy |
| Best Window | Midday on the upper West Branch for sulphurs and olives, then low-light edge water only if storms stay away |
| Best Method | Dry flies and emergers over working fish; wet flies or nymphs in lower West Branch seams when the surface is quiet |
| Wadeability | Limited but workable along edges, inside bends, and stable gravel. Avoid unnecessary crossings |
Weather
For Hancock and Hale Eddy, the National Weather Service forecast calls for partly sunny weather with a high near 82 F, south wind around 6 mph, and scattered showers and thunderstorms from late morning through the afternoon. Rain totals are forecast around a tenth to a quarter inch where storms pass, with more possible in thunderstorms. The fishing plan should be flexible: use the cold tailwater early and midday, but do not wait out lightning from a boat, open bank, or mid-river position.
River Notes
The Hale Eddy gauge is a little lower than yesterday morning and remains a useful level for both drift boats and careful wading. It is not a green light for casual crossings. Stay on the soft side of the current, fish bank cushions and inside seams, and keep the boat plan conservative if storms start stacking up.
Current Upper Delaware source context continues to point anglers toward the West Branch, not the lower East Branch or Main Stem, for trout during this warm spell. The upper West Branch is still the better dry-fly starting point because the release keeps the water cold and the midday sulphur program is still alive. Algae on the upper river can make weighted subsurface rigs frustrating, so use dries, emergers, and lightly fished wets when fish are up. If you need to nymph, the lower West Branch seams are the better choice.
Hatch Activity
Official gauges do not report hatches. Current Upper Delaware source context supports summer sulphurs on the upper West Branch, small Blue Winged Olives, Isonychias, Light Cahills, tan caddis, and terrestrial patterns. Storm clouds may help the olive and spinner game, but lightning should end the session until the cell clears.
| Hatch | Size | Notes |
|---|---|---|
| Sulphur | 16-20 | Main upper-tailwater hatch target around midday; carry duns, emergers, cripples, and spinners |
| Blue Winged Olive | 16-24 | Best during cloud cover, damp air, or subtle mixed-rise periods |
| Isonychia | 10-14 | Useful as a searching dry, wet fly, or nymph profile in faster seams |
| Light Cahill | 14-16 | Good low-light and evening carry pattern if storms leave fishable water |
| Tan Caddis | 16-20 | Pupa, soft hackles, and adults can cover broken water before steady surface feeding |
| Ants and Beetles | 14-20 | Work tight to shaded banks, grass, and undercut edges during quiet sunny stretches |
Recommended Flies
| Category | Fly | Size | Notes |
|---|---|---|---|
| Dry | Sulphur Sparkle Dun, Comparadun, or CDC Emerger | 16-20 | Primary pattern set for upper West Branch midday feeders |
| Dry | BWO Comparadun or CDC Olive | 18-24 | Use for small rises during clouds, showers, or mixed sulphur-olive activity |
| Dry | Isonychia Parachute or Light Cahill | 10-16 | Searching profile for broken water and low-light seams |
| Dry | Ant or Beetle | 14-20 | Bank and shade option when trout are not keyed to mayflies |
| Wet | Soft Hackle Sulphur or Soft Hackle Pheasant Tail | 14-18 | Swing just under the film when fish eat emergers instead of duns |
| Nymph | Pheasant Tail, Frenchie, or Perdigon | 14-18 | Use in lower West Branch seams or cleaner lanes where algae is less limiting |
| Nymph | Isonychia Nymph | 10-12 | Fish riffle edges and faster banks with a controlled swing at the end |
| Streamer | Small Sculpin or Woolly Bugger | 6-10 | Backup for shaded banks or stained edges after rain; stop for lightning |
Tactics
Start on the upper cold tailwater and watch before wading. If fish are rising, use a single dry or emerger on a long leader and make the first drift count. Clean algae from flies often and avoid heavy nymph rigs in upper lanes where they foul every cast. During quiet surface periods, move to lower West Branch walking-speed seams with a short nymph or wet-fly rig. If thunder is close, leave the river; no hatch is worth staying exposed in a storm.
Gauge Links
| Gauge | Flow | Temp | Link |
|---|---|---|---|
| WEST BRANCH DELAWARE RIVER AT HALE EDDY NY | 642 cfs | 49.5 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, and safety context.