Beaverkill and Willowemoc Fishing Report: July 25, 2026

Quick Summary

This is a cautious Catskills freestone report, not an all-day green light. USGS showed the Beaver Kill at Cooks Falls at 179 cfs, 1.55 feet, and 64.4 F during the morning refresh, while Willowemoc Creek near Livingston Manor was 45.7 cfs, 2.00 feet, and 58.8 F. Current local Catskill reporting now supports a short morning freestone window after the cool night, with nymphs, wet flies, and small dries most useful before the day warms. Carry a thermometer, fish lightly, and move to a colder tailwater or stop targeting trout before readings approach 68 F.

Conditions Snapshot

Field	Value
Status	Tough. Morning flows are wadeable and fishable in spots, but warming freestone temperatures sharply limit ethical trout opportunity
Flow	179 cfs at Beaver Kill at Cooks Falls; 45.7 cfs on Willowemoc Creek near Livingston Manor
Gauge Height	1.55 feet at Cooks Falls; 2.00 feet near Livingston Manor
Water Temp	64.4 F at Cooks Falls; 58.8 F on Willowemoc Creek during the morning USGS refresh
Clarity	Not reported by official gauges; check visibility at the access after the recent storm cycle
Trend	Falling and lower than yesterday morning on both gauges
Best Window	Early morning only where water stays below 68 F
Best Method	Small dries, soft hackles, or light nymphs in shaded riffles only if temperature and footing are safe
Wadeability	Limited to fair for footing, but temperature is the main constraint; avoid unnecessary handling in warm water

Weather

For Roscoe and Livingston Manor, the National Weather Service forecast calls for sunny skies with a high near 79 F and light southeast wind around 0 to 6 mph. Tonight should be mostly clear with a low around 53 F. The sunny, warm afternoon is the key limitation on the Beaverkill and Willowemoc; even with comfortable morning readings in some spots, freestone temperatures can climb quickly by midday.

River Notes

The Beaverkill and Willowemoc continue to drop into late-July low-to-moderate freestone shape. The lower flows make wading easier, but they also reduce cold-water buffer and push trout toward oxygenated riffles, shade, and colder inflows. The new morning source context is a little more favorable than the first-pass wording: after the cool night, the freestones are back in play for a few hours, especially for careful nymphing before the best tailwater hatch windows develop. That does not remove the warm-water risk. Treat the Beaverkill as the first water to recheck with a thermometer, and leave trout alone once readings move toward 68 F. The Beaverkill's Horton Brook thermal regulation also remains in place from Iron Bridge at Horton downstream to the first Route 17 overpass, where angling is prohibited July 1 through August 31.

Hatch Activity

Official gauges do not report hatches. Current Catskill and Delaware-system context keeps small olives, sulphurs, tan caddis, Isonychias, Light Cahills, spinners, and terrestrials in the late-July mix, with larger mayfly nymphs and wet flies still useful in fast water during the morning. Temperature should decide whether to fish before hatch expectations do. On low, clear freestone water, smaller and cleaner presentations should outfish large attractors unless you are working broken pocket water early.

Hatch	Size	Notes
Blue Winged Olive	18-22	Carry for shaded slicks and any cloud-softened edge water
Sulphur	16-20	Possible where water stays cool enough; emergers and soft hackles are useful
Tan Caddis	16-20	Pupa, soft hackles, and adults fit riffles and pocket water
Isonychia	10-14	Larger profile for oxygenated riffle edges and pocket-water searching
Light Cahill	14-16	Only worth fishing if water temperature remains safe later in the day
Rusty and Sulphur Spinners	16-22	Evening option only if a thermometer confirms trout-safe water
Ants and Beetles	14-20	Useful around banks, grass, and shaded pockets during quiet periods

Recommended Flies

Category	Fly	Size	Notes
Dry	BWO Comparadun or CDC Dun	18-22	Small olive option for shaded slicks and soft seams
Dry	Sulphur Sparkle Dun or Comparadun	16-20	Fish only where water temperature remains safe
Dry	Elk Hair Caddis or X-Caddis	16-20	Skate or dead drift along riffle edges
Dry	Isonychia Parachute	10-14	Larger searching dry for pocket water and riffle shoulders
Dry	Light Cahill Parachute	14-16	Visible pale searching dry only during a safe temperature window
Dry	Rusty Spinner or Sulphur Spinner	16-22	Last-light option only if water stays below stress range
Dry	Ant or Beetle	14-20	Work tight to shaded banks and overhanging grass
Wet	Soft Hackle Pheasant Tail or Soft Hackle Hare's Ear	14-18	Swing through riffle tails early before water warms
Nymph	Pheasant Tail or Frenchie	14-18	Use light rigs only in safe, cool edge seams
Nymph	Tan Caddis Pupa	16-18	Drop below a dry or swing as a wet through riffles
Nymph	Isonychia Nymph	10-12	Good larger nymph in fast, oxygenated water

Tactics

Start with the thermometer, not the fly box. If the Willowemoc, Beaverkill, or a shaded freestone reach is cool enough, fish early with a small dry, soft hackle, or a light nymph rig in riffle edges and broken tailouts. Larger mayfly nymphs are worth a few clean drifts in faster water before the sun gets high. Stay out of the middle of thin runs, make longer casts, and land fish quickly. If water reaches the upper 60s, stop trout fishing and move to the colder West Branch tailwater or choose a warmwater option instead.

Gauge Links

Gauge	Flow	Temp	Link
BEAVER KILL AT COOKS FALLS NY	179 cfs	64.4 F	USGS 01420500
WILLOWEMOC CREEK NR LIVINGSTON MANOR NY	45.7 cfs	58.8 F	USGS 01419500

Sources

Official sources checked: USGS stations 01420500 and 01419500, plus the National Weather Service forecast for the Roscoe and Livingston Manor, 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, access, and safety context.