Upper Delaware, New York
West Branch Delaware Fishing Report: August 25, 2026
The West Branch remains cold and steady at Hale Eddy, with 637 cfs, 49.3 F water, clouds, scattered showers, olives, ants, Isonychias, Cahills, and late sulphurs.
- Status
- good
- Flow trend
- falling
- Best window
- Cloudy and showery periods from late morning through afternoon, then any storm-free evening soft light
- Best methods
- dry flies, wet flies, nymphs
Quick Summary
The West Branch is still the best protected trout water in this New York set. USGS showed 637 cfs, 3.02 feet, and 49.3 F at Hale Eddy during the morning check, a little lower than yesterday morning and still cold for late August. Recent Upper Delaware source context reports stable, clear water with late-summer olives, flying ants, Isonychias, Cahills or summer stenos, and a few remaining sulphurs. Fish the cloud and light-shower windows, but leave the river during thunderstorms and keep wading decisions conservative at this flow.
Conditions Snapshot
| Field | Value |
|---|---|
| Status | Good. Cold tailwater water, steady flow, clouds, and scattered showers give anglers a real dry-fly and wet-fly window; lightning and slick wading are the main limits |
| Flow | 637 cfs at Hale Eddy during the morning check |
| Gauge Height | 3.02 feet at Hale Eddy |
| Water Temp | 49.3 F at Hale Eddy |
| Clarity | Not reported by official gauges; recent local context described the rivers as clear and stable |
| Trend | Slightly falling compared with yesterday morning |
| Best Window | Cloudy and showery periods from late morning through afternoon; try the evening only if storms are gone |
| Best Method | Dry flies, emergers, and soft hackles during surface activity; light nymphs in cleaner seams when fish are not rising |
| Wadeability | Limited. Stay with known bars, soft edges, and careful crossings rather than pushing mid-channel moves |
Weather
For Hancock and Hale Eddy, the National Weather Service forecast calls for mostly cloudy skies, scattered rain showers from late morning into early afternoon, then scattered showers and thunderstorms with a high near 71 F. Wind should be west around 8 mph. Tonight turns partly cloudy with isolated early showers and areas of fog. The cloud cover helps small olives and careful risers, but thunderstorms are a firm safety stop.
River Notes
Hale Eddy is holding in a steady late-summer band with cold release influence still carrying through the morning. The flow is enough for boats and full river lanes, but it is not low-water easy wading. Work from the bank, gravel bars, inside seams, and slower edges before committing to any crossing.
Recent Upper Delaware source context still points to clear water, stable levels, and late-August bug variety rather than one heavy hatch. Small olives and ants should get extra attention under clouds or showers. If upper-river algae fouls subsurface rigs, change to a dry, emerger, or soft hackle, or move to cleaner lower-West lanes instead of grinding through dirty drifts.
Hatch Activity
Official gauges do not report hatches. Recent Upper Delaware source context supports Blue Winged Olives, flying ants, Isonychias, Light Cahills or summer stenos, tan caddis, and a few sulphurs. Expect short windows and picky fish rather than blanket activity.
| Hatch | Size | Notes |
|---|---|---|
| Blue Winged Olive | 18-24 | Best during clouds, light showers, slicks, and soft seams with steady sippers |
| Flying Ant | 18-24 | Important late-summer option along banks, foam lines, and tailouts |
| Isonychia or Slate Drake | 10-12 | Search faster banks, riffle edges, and broken water with dries, wets, or swimming nymphs |
| Light Cahill or Summer Steno | 14-16 | Useful as a searching dry during mixed afternoon or evening activity |
| Tan Caddis | 16-20 | Fish pupa, emergers, or small adults in riffles and broken current |
| Sulphur | 16-20 | Fading, but still worth carrying on the coldest upper West Branch water |
Recommended Flies
| Category | Fly | Size | Notes |
|---|---|---|---|
| Dry | BWO Comparadun, CDC Olive, or olive emerger | 18-24 | Use during cloud cover, showers, or steady sipping in slick water |
| Dry | Flying Ant | 18-24 | Use when trout refuse mayfly profiles or feed tight to foam and bank seams |
| Dry | Isonychia Parachute, Slate Drake, Light Cahill, or Summer Steno | 10-16 | Search broken water before fish settle on smaller olives or ants |
| Dry | Sulphur Sparkle Dun, CDC Emerger, or Comparadun | 16-20 | Carry a few for cold upper-river fish, but do not build the whole plan around sulphurs |
| Wet | Soft Hackle Pheasant Tail, Soft Hackle Sulphur, or Isonychia Wet | 12-18 | Swing through riffle tails and bank seams between surface pushes |
| Nymph | Pheasant Tail, Frenchie, caddis pupa, Sulphur Nymph, or Isonychia Nymph | 12-20 | Keep rigs clean and targeted; move if algae keeps fouling the fly |
Tactics
Start by watching slicks and soft seams before tying on weight. If olives or ants are on the water, fish one accurate dry or a dry-and-emerger pair on a long leader. In broken water, swing a soft hackle or Isonychia wet before dropping a nymph rig deep. If you nymph, choose cleaner seams and check the fly often. Do not stay on the water through thunder, and do not force wading moves just to reach a rise across the channel.
Gauge Links
| Gauge | Flow | Temp | Link |
|---|---|---|---|
| WEST BRANCH DELAWARE RIVER AT HALE EDDY NY | 637 cfs | 49.3 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.