West Branch Delaware Fishing Report: September 3, 2026

Quick Summary

The West Branch is fishable only with a cautious plan this morning. USGS showed 1,210 cfs, 4.01 feet, and 56.8 F at Hale Eddy during the 8 AM check, while Stilesville stayed at a steady 475 cfs and 49.1 F below the Cannonsville release. Current Upper Delaware local context reported thunderstorms overnight, high and off-color water below feeder influence, and a still-rising Hale Eddy reading; the cleaner and more wadeable choice is the upper river near Stilesville, while lower sections are better approached from a boat or skipped until they settle. Watch radar, side creeks, and color closely because the National Weather Service still has showers and thunderstorms in the forecast.

Conditions Snapshot

Field	Value
Status	Tough. Cold tailwater water remains available, but the lower West Branch is high, recently rising, and likely stained after overnight storms
Flow	1,210 cfs at Hale Eddy and 475 cfs at Stilesville during the 8 AM check
Gauge Height	4.01 feet at Hale Eddy; 8.04 feet at Stilesville
Water Temp	56.8 F at Hale Eddy; 49.1 F at Stilesville
Clarity	Not reported by official gauges; current local context described high, off-color water below feeder influence
Trend	Rising at Hale Eddy after storms; stable at Stilesville where the release is controlling flow
Best Window	Upper river and Stilesville-area water early, then only if storms and stain stay manageable
Best Method	Streamers in stained boat water; olives, ants, Isonychia, Cahills, and caddis if fish show in cleaner tailwater seams
Wadeability	Limited. Avoid pushy lower-river crossings and do not wade near rising feeder influence

Weather

For Hancock and Hale Eddy, the National Weather Service forecast calls for a high near 81 F, west wind around 5 mph, a chance of rain showers this morning, and a slight chance of showers and thunderstorms this afternoon. Tonight stays unsettled with a chance of showers and thunderstorms before patchy fog. Lightning, quick feeder bumps, and fresh color are the practical constraints; do not let a cold tailwater temperature hide the access risk.

River Notes

This is not the same moderate West Branch setup as yesterday morning. The Cannonsville-controlled upper river remains cold and steady, but the Hale Eddy gauge has roughly doubled from the prior morning after thunderstorms and feeder runoff. If you need to wade, stay high in the system, use familiar gravel and bank edges, and skip aggressive crossings. If you are floating, expect better streamer cover and fewer clean dry-fly lanes until the color improves.

The best plan is to treat clarity as a real-time decision. In stained water, fish a darker or olive streamer tight to banks, soft inside seams, and woody edges, then slow down in the first softer water below riffles. If the river clears enough and fish show, switch to small olives, ants, Isonychia, Cahill, or caddis patterns with long leaders. Stop fishing immediately if thunderstorms build over the valley.

Hatch Activity

Official gauges do not report hatches. Current Upper Delaware local context supports Blue Winged Olives, late sulphurs, tan caddis, Light Cahills or Summer Stenos, and Slate Drakes or Isonychias, with terrestrial ants still worth carrying. Dirty water can suppress visible dry-fly fishing, so hatch matching matters most in cleaner upper-river seams and evening slicks.

Hatch	Size	Notes
Blue Winged Olive	16-24	Best under clouds, damp air, and soft tailwater slicks
Flying Ant	18-24	Useful along banks and foam lines when fish are looking up
Isonychia or Slate Drake	10-14	Fish dries, wets, or swimming nymphs along broken edges and riffle seams
Light Cahill or Summer Steno	14-18	Carry for mixed evening rise forms in cleaner water
Sulphur	16-20	Late and sporadic; most likely in colder upper tailwater water
Tan Caddis	16-20	Fish pupa or soft hackles when adults are not obvious

Recommended Flies

Category	Fly	Size	Notes
Streamer	Olive or black Woolly Bugger, sculpin, or sparse baitfish pattern	4-8	Best first choice if the lower river stays stained from overnight rain
Dry	BWO Comparadun, CDC Olive, or olive emerger	16-24	Use in soft seams and slicks if fish show through the cloud cover
Dry	Flying Ant or small beetle	18-24	Good searching pattern along banks and foam lines
Dry	Isonychia Parachute, Slate Drake, Light Cahill, or Summer Steno	10-18	Cover larger mayfly rise forms near broken banks and riffle tails
Wet	Isonychia Wet, Soft Hackle Pheasant Tail, or partridge soft hackle	12-18	Swing when fish move but do not hold steady on top
Nymph	Pheasant Tail, caddis pupa, Frenchie, or Isonychia Nymph	12-20	Use sparingly in cleaner slots; check often for algae or debris

Tactics

Start with a safety check before choosing flies: look at feeder color, floating debris, and whether the Hale Eddy gauge is still climbing. In cleaner upper water, cover soft bank seams with a single dry, dry-and-emerger, or wet fly before wading into position. In stained lower water, fish streamers from the bank or boat and keep retrieves slow enough to stay in the fish's window. Do not cross pushy water today, and leave the river when thunder is close.

Gauge Links

Gauge	Flow	Temp	Link
WEST BRANCH DELAWARE RIVER AT HALE EDDY NY	1,210 cfs	56.8 F	USGS 01426500
WEST BRANCH DELAWARE RIVER AT STILESVILLE NY	475 cfs	49.1 F	USGS 01425000

Sources

Official sources checked: USGS stations 01426500 and 01425000, plus 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, release, and safety context.