Beaverkill and Willowemoc Fishing Report: July 26, 2026

Quick Summary

Treat the Beaverkill and Willowemoc as a short-window freestone option, not an all-day trout plan. USGS showed the Beaver Kill at Cooks Falls at 159 cfs, 1.44 feet, and 65.3 F during the morning check, while Willowemoc Creek near Livingston Manor was 41.3 cfs, 1.97 feet, and 59.5 F. The Willowemoc gives anglers the better morning temperature buffer, but both streams should be checked with a thermometer as soon as the sun gets high. If water approaches 68 F, stop targeting trout and move to colder tailwater water or a warmwater option.

Conditions Snapshot

Field	Value
Status	Tough. Flows are low-to-moderate and wadeable in spots, but warm freestone temperatures sharply limit ethical trout opportunity
Flow	159 cfs at Beaver Kill at Cooks Falls; 41.3 cfs on Willowemoc Creek near Livingston Manor
Gauge Height	1.44 feet at Cooks Falls; 1.97 feet near Livingston Manor
Water Temp	65.3 F at Cooks Falls; 59.5 F on Willowemoc Creek during the morning USGS check
Clarity	Not reported by official gauges; local Catskill context points to freestones back in shape but low and temperature-sensitive
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 mostly sunny skies with a high near 79 F, light southwest wind at 0 to 3 mph, and isolated showers or thunderstorms late in the afternoon. Tonight should be mostly cloudy with a low around 57 F. The morning is the safest trout window. By midday, bright sun and low freestone flows can push the Beaverkill toward stressful temperatures even if the air does not feel extreme.

River Notes

The freestones continue to slide into late-July low water. That makes access and dry-fly presentation easier, but it also leaves less cold-water cushion for trout. Current Catskill source context says tailwaters are the better daytime choice, especially for anglers looking for dry-fly activity, while freestone fishing should be limited to the coolest morning water. The Beaverkill's Horton Brook thermal regulation remains in place from Iron Bridge at Horton downstream to the first Route 17 overpass, where angling is prohibited July 1 through August 31. Stay out of that closed reach, keep fish wet, and do not treat a cool tributary mouth as a place to concentrate pressure on stacked trout.

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. On these freestones, water temperature matters more than the bug list. Fish the smaller and cleaner patterns first on low, clear water, and save larger Isonychia or caddis profiles for broken riffles where trout have oxygen and cover.

Hatch	Size	Notes
Blue Winged Olive	16-22	Carry for shaded slicks, soft seams, and any cloud-softened morning window
Sulphur	16-20	Possible where water stays cool enough; emergers and soft hackles are useful
Tan Caddis	16-18	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	16-22	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	16-18	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 a thermometer and the regulations map. If the Willowemoc or an upper shaded Beaverkill reach is cool enough, fish early with a single small dry, a soft hackle, or a light nymph rig in riffle edges and broken tailouts. Keep casts longer on thin water, stay out of the middle of skinny runs, and land fish quickly. If the Beaverkill is already in the mid-to-upper 60s where you are standing, do not wait for it to get worse. Move to the West Branch tailwater or switch to bass and panfish water.

Gauge Links

Gauge	Flow	Temp	Link
BEAVER KILL AT COOKS FALLS NY	159 cfs	65.3 F	USGS 01420500
WILLOWEMOC CREEK NR LIVINGSTON MANOR NY	41.3 cfs	59.5 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.