Upper Delaware, New York
West Branch Delaware Fishing Report: July 15, 2026
The West Branch remains the strongest New York trout option this morning, with cold release water at Stilesville and Hale Eddy, a falling overnight pulse, sulphurs and olives in play, and an Air Quality Alert to factor into the day.
- Status
- good
- Flow trend
- falling
- Best window
- Early, late, and the colder upper West Branch sulphur window; account for smoke and air quality before staying out long
- Best methods
- dry flies, nymphs, wet flies
Quick Summary
The West Branch is still the best trout option in this New York report set because the release water is cold and fishable. USGS showed 849 cfs and 46.9 F at Hale Eddy, with Stilesville down to 560 cfs and 46.8 F during the 9 AM refresh. The overnight Cannonsville pulse is dropping back, so wading remains selective but the cold-water cushion is useful. Fish early, stay close to the upper West Branch cold influence, and account for smoke and the active Air Quality Alert before committing to a long dry-fly session.
Conditions Snapshot
| Field | Value |
|---|---|
| Status | Good on the cold West Branch tailwater; smoke and the active Air Quality Alert are the main non-river constraints |
| Flow | 849 cfs at Hale Eddy; 560 cfs at Stilesville |
| Gauge Height | 3.41 feet at Hale Eddy; 8.14 feet at Stilesville |
| Water Temp | 46.9 F at Hale Eddy; 46.8 F at Stilesville during the 9 AM USGS refresh |
| Clarity | Not reported by official gauges; local Delaware reports continue to point anglers toward the cold upper West Branch |
| Trend | Falling from the overnight release pulse, with Stilesville dropping sharply while Hale Eddy remains pushy |
| Best Window | Early, late, and the colder upper West Branch sulphur window; account for smoke and air quality before staying out long |
| Best Method | Dry flies when fish show on sulphurs, olives, Cahills, or spinners; nymphs and wet flies between surface windows |
| Wadeability | Limited. Hale Eddy near 849 cfs calls for edge fishing, known crossings, or a boat rather than casual mid-river wading |
Weather
For Hancock and Hale Eddy, the National Weather Service forecast calls for haze and areas of smoke with a high near 89 F. Wind is forecast from the northwest around 9 mph, with gusts as high as 21 mph. An Air Quality Alert is active until 8:30 PM, and tonight is forecast partly cloudy with areas of smoke and a low around 64 F. The cold release should guide where trout are targeted, but smoke and air quality should guide how long you stay and whether sensitive anglers should fish at all.
River Notes
Cannonsville release movement is again the main river-control detail. Local Delaware reporting noted a higher overnight pulse that was dropping back toward the base release this morning, and the 9 AM official data showed that drop clearly at Stilesville while Hale Eddy stayed near 850 cfs. That combination is favorable for the West Branch, but not for careless wading. Stay in softer margins, watch pushy tailouts, and treat lower or warmer parts of the Delaware system differently than the upper tailwater. If you leave the cold influence, carry a thermometer and stop trout fishing before water approaches 68 F.
Hatch Activity
Current local Delaware context supports a mid-summer tailwater box: sulphurs on the upper West Branch, small olives mixed with them, Isonychias, summer Cahills, tan caddis, and evening spinners when wind and light allow. Terrestrials are useful along grassy banks, but the most dependable dry-fly work should come from matching actual bugs over cold water.
| Hatch | Size | Notes |
|---|---|---|
| Sulphur | 16-20 | Primary upper West Branch summer mayfly; carry duns, emergers, cripples, and soft hackles |
| Blue Winged Olive | 18-24 | Tiny olives can mix with sulphurs, especially in soft slicks and shaded lanes |
| Light Cahill | 14-16 | Useful visible dry and evening profile on broken water |
| Isonychia | 10-12 | Nymphs and wets are good through riffle edges; dries can cover sparse larger rises |
| Tan Caddis | 16-20 | Pupa and soft hackles can fill gaps before and after mayfly activity |
| Rusty Spinner | 14-20 | Carry for last light if wind and smoke allow calm surface water |
| Ants and Beetles | 14-20 | Bank-side backups for shaded edges and summer flats |
Recommended Flies
| Category | Fly | Size | Notes |
|---|---|---|---|
| Dry | Sulphur Sparkle Dun, Comparadun, or CDC Emerger | 16-20 | First choice for upper-river sulphur fish |
| Dry | BWO Comparadun or CDC Dun | 18-24 | Use for small olive fish in slicks and shaded lanes |
| Dry | Light Cahill or White Wulff | 14-16 | Visible dry for pale mayflies and broken-water prospecting |
| Dry | Isonychia Parachute or Comparadun | 10-12 | Good larger profile along riffles and heavier seams |
| Dry | Rusty Spinner | 14-20 | Keep ready for calm last light |
| Dry | Ant or Beetle | 14-20 | Summer bank option when hatch activity is uneven |
| Nymph | Pheasant Tail, Frenchie, or Split-Back Mayfly | 14-18 | Fish soft seams before the surface window develops |
| Nymph | Isonychia Nymph | 10-12 | Work riffle edges and let the fly finish with a controlled swing |
| Wet | Soft Hackle Sulphur or Soft Hackle Pheasant Tail | 14-18 | Good during emerging bugs or when fish flash below dries |
| Nymph | Tan Caddis Pupa | 16-18 | Useful dropper between mayfly pushes |
Tactics
Start with the coldest water and let the river show you whether it is a dry-fly or subsurface morning. At 849 cfs at Hale Eddy, edge seams, inside bends, soft banks, and boat-supported water make more sense than forcing broad crossings. Nymphs and soft hackles are the efficient search tools until sulphurs, olives, Cahills, or spinners bring fish up. When fish show, lengthen the leader, make the first cast count, and avoid repeated false casting over flat-water trout. If smoke thickens, shorten the session rather than waiting through the entire midday lull.
Gauge Links
| Gauge | Flow | Temp | Link |
|---|---|---|---|
| WEST BRANCH DELAWARE RIVER AT HALE EDDY NY | 849 cfs | 46.9 F | USGS 01426500 |
| WEST BRANCH DELAWARE RIVER AT STILESVILLE NY | 560 cfs | 46.8 F | USGS 01425000 |
Sources
Official sources checked: USGS stations 01426500 and 01425000, plus the National Weather Service forecast and Air Quality Alert 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, release, access, method, clarity, and safety context.