Upper Delaware, New York
West Branch Delaware Fishing Report: August 21, 2026
The West Branch is cold, steady, and fishable at Hale Eddy, with 663 cfs, 48.9 F water, early fog, light north wind, olives, flying ants, Cahills, Isonychias, and fading sulphurs.
- Status
- good
- Flow trend
- stable
- Best window
- Late morning through afternoon, with another check during evening soft light
- Best methods
- dry flies, wet flies, nymphs
Quick Summary
The West Branch remains the best New York trout option in this morning's report set. USGS showed 663 cfs, 3.07 feet, and 48.9 F at Hale Eddy during the 8 AM check, and the flow has been essentially stable compared with the last two mornings. Current Upper Delaware source context reports a 549 cfs Cannonsville release, cooler overnight air, dense early fog, light north wind, olives, flying ants, Cahills, Isonychias, and waning but still present sulphurs. Treat the river as fishable but selective: wading is still limited at this flow, and algae on the upper West Branch makes dry-fly and wet-fly work cleaner than heavy nymphing up high.
Conditions Snapshot
| Field | Value |
|---|---|
| Status | Good. Cold tailwater temperatures, steady flow, light wind, and current bug activity give anglers a real shot; algae and late-summer selectivity are the main constraints |
| Flow | 663 cfs at Hale Eddy during the 8 AM check |
| Gauge Height | 3.07 feet at Hale Eddy |
| Water Temp | 48.9 F at Hale Eddy |
| Clarity | Not reported by official gauges; current local context describes fishable flows after yesterday's rain soaked in |
| Trend | Stable compared with yesterday morning and the prior two-day USGS trace |
| Best Window | Late morning through afternoon after fog lifts; check again in evening soft light |
| Best Method | Dry flies, emergers, and soft hackles first; nymph lower-West seams where algae is less likely to foul the rig |
| Wadeability | Limited. Pick known bars and softer edges, and avoid unnecessary crossings |
Weather
For Hancock and Hale Eddy, the National Weather Service forecast calls for areas of fog early, then sun with a high near 79 F. Wind is light from the northeast around 3 mph, with no meaningful precipitation in the daytime forecast. Tonight turns partly cloudy with patchy fog and a low near 55 F. The light wind is helpful for dry-fly accuracy, but bright sun after the fog burns off may push the better surface work toward shaded banks, riffle edges, and any water with steady bug activity.
River Notes
The Hale Eddy gauge is holding at a dependable late-August tailwater level. That is enough water for drift boats and productive bank-to-bank current, but it is not casual wading water. Move slowly, stay on familiar crossings, and fish from stable gravel bars or inside seams rather than trying to reach every rising fish.
Current Upper Delaware context lines up with the official gauge: flows are starting close to yesterday's levels, the Cannonsville release is steady, and cooler overnight weather helped the freestones and mainstem. For the West Branch specifically, the important fishing note is algae. If you are high on the river, avoid grinding a nymph rig through weeds all morning. Watch slicks and foam lines for heads, use accurate casts with dries or emergers, and keep soft hackles ready when fish are moving but not staying up.
Hatch Activity
Official gauges do not report hatches. Current Upper Delaware source context supports Dark Blue Winged Olives, sulphurs, tan caddis, Light Cahills, Isonychias, and flying ants. Sulphurs are tapering, but they still matter on cold upper-river water. Ants are worth keeping in the top row of the box because one short terrestrial window can outfish the mayflies.
| Hatch | Size | Notes |
|---|---|---|
| Dark Blue Winged Olive | 16-18 | Best if fog, shade, or broken light keeps fish comfortable near the surface |
| Sulphur | 16-20 | Waning, but still worth carrying on the coldest West Branch water |
| Flying Ant | 18-24 | Fish banks, foam seams, and slick tailouts when trout refuse mayfly patterns |
| Tan Caddis | 16-20 | Useful as pupa, emergers, or small adults in broken current |
| Light Cahill or Summer Steno | 14-16 | Good mixed-hatch dry for afternoon and evening water |
| Isonychia | 10-12 | Use as a searching dry, wet fly, or nymph along faster banks and riffle edges |
Recommended Flies
| Category | Fly | Size | Notes |
|---|---|---|---|
| Dry | BWO Comparadun, CDC Olive, or olive emerger | 16-18 | Use when fish work small mayflies in slicks or soft seams |
| Dry | Sulphur Sparkle Dun, CDC Emerger, or Comparadun | 16-20 | Carry for the cold upper river, even though the hatch is fading |
| Dry | Flying Ant | 18-24 | Good changeup during late-summer terrestrial activity |
| Dry | Isonychia Parachute or Light Cahill | 10-16 | Search broken water before fish commit to smaller flies |
| Wet | Soft Hackle Pheasant Tail, Soft Hackle Sulphur, or Isonychia Wet | 12-18 | Swing before or between surface pushes |
| Nymph | Pheasant Tail, Frenchie, or Sulphur Nymph | 14-20 | Better on lower-West seams where algae is less of a problem |
Tactics
Start with observation, not weight. If the fog lingers or fish are already dimpling, use a long leader, a single dry or dry-and-emerger pair, and make short accurate presentations from downstream or quartering across. If fish are not up, swing soft hackles through riffle tails and bank seams before committing to nymphs. Where algae fouls the rig, change water or method instead of repeatedly cleaning flies. Keep wading conservative at 663 cfs, and use the cold West Branch rather than warmer freestones if afternoon trout temperatures elsewhere climb toward 68 F.
Gauge Links
| Gauge | Flow | Temp | Link |
|---|---|---|---|
| WEST BRANCH DELAWARE RIVER AT HALE EDDY NY | 663 cfs | 48.9 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, and safety context.