Beaverkill-Willowemoc Fishing Report: July 14, 2026

Quick Summary

The Beaverkill-Willowemoc system should be treated as temperature-limited trout water today. USGS showed the Beaver Kill at Cooks Falls at 149 cfs and 69.8 F during the 9 AM refresh, while Willowemoc Creek near Livingston Manor was 33.2 cfs and 63.7 F. Current local Catskills context also reported the Cooks Falls area much too warm for freestone trout fishing this morning. With a National Weather Service Heat Advisory in effect through this evening, the practical recommendation is to rest the freestones and fish cold release water if you want a dependable trout session.

Conditions Snapshot

Field	Value
Status	Tough and temperature-limited for trout; the Beaver Kill was already 69.8 F during the 9 AM USGS refresh
Flow	149 cfs at Cooks Falls on the Beaver Kill; 33.2 cfs near Livingston Manor on the Willowemoc
Gauge Height	1.38 feet at Cooks Falls; 1.91 feet near Livingston Manor
Water Temp	69.8 F on the Beaver Kill and 63.7 F on the Willowemoc during the 9 AM USGS refresh
Clarity	Not reported by official gauges; low summer freestone flow and warm water are the controlling details
Trend	Beaver Kill flow is falling from yesterday morning; Willowemoc flow is essentially stable and still low
Best Window	Thermometer-first at dawn only; rest warm freestone trout and move to cold tailwater for a real trout session
Best Method	Do not press warm trout water. Fish cold release water instead, or choose non-trout warmwater options
Wadeability	Good from a footing standpoint, but temperature controls whether trout fishing is responsible

Weather

For Roscoe and Livingston Manor, the National Weather Service has a Heat Advisory in effect through 8 PM. The forecast calls for sunshine and haze with a high near 92 F, west wind from 6 to 12 mph, and a mostly clear night around 70 F. Wednesday is forecast mostly sunny near 88 F with areas of smoke and northwest wind gusts up to 21 mph. That weather pattern does not give low freestone trout water much recovery time, so a cool reading in one shaded reach should not be assumed to hold through the afternoon.

River Notes

The Beaver Kill is the key safety gauge today, and it is already too warm for responsible trout pressure. Cooks Falls was 69.8 F in the morning and falling in flow, which points toward additional warming as the day heats up. Current local context also repeats the summer Horton Brook thermal closure on the Beaverkill, from Iron Bridge at Horton downstream to the first Route 17 overpass, where angling is prohibited July 1 through August 31. The Willowemoc gauge is cooler, but it is very low and individual pools can move quickly toward the stress line. If you check a shaded Willowemoc reach and it is safely below 68 F, keep the session short, fight fish quickly, and stop as temperatures rise. The better trout decision is to shift to the cold West Branch Delaware or another release-influenced option.

Hatch Activity

The summer Catskills hatch list still belongs in the box, but today it should be used on cold water rather than warm freestone trout. Expect the relevant mix to include sulphurs, olives, Isonychias, summer Cahills, tan caddis, yellow sallies, terrestrials, and rusty spinners. Do not chase risers in water near or above 68 F; the hatch is not a reason to stress trout in warm water.

Hatch	Size	Notes
Blue Winged Olive	18-22	Relevant on cold tailwater or verified cool shaded water, not warm Beaverkill pools
Sulphur	16-20	Better matched on cold release water today than on warming freestone reaches
Light Cahill	14-16	Carry for colder alternatives and evening water only if temperatures remain safe
Isonychia	10-12	A useful searching bug on cold riffle edges and tailwaters
Tan Caddis	16-18	Pupa and soft hackles can work where water temperatures stay safe
Yellow Sally	14-16	Worth having for cold broken water
Ants and Beetles	14-20	Good summer bank patterns, but only where trout water is cold enough
Rusty Spinner	14-20	Skip the evening freestone spinner game unless water is safely below 68 F

Recommended Flies

Category	Fly	Size	Notes
Dry	BWO Comparadun or CDC Dun	18-22	Use on cold tailwater or verified safe water only
Dry	Sulphur Comparadun or Sparkle Dun	16-20	Better fit for cold release water today
Dry	Light Cahill or Parachute Adams	14-16	Visible searching dry for colder alternatives
Dry	Isonychia Parachute	10-12	Prospecting fly where temperatures are safe
Dry	Yellow Sally	14-16	Cold riffle option when stoneflies are active
Dry	Ant or Beetle	14-20	Summer bank option for cold water
Dry	Rusty Spinner	14-20	Only for evening water verified below the trout-stress line
Nymph	Pheasant Tail or Frenchie	14-18	For cold-water alternatives or verified safe freestone water
Nymph	Isonychia Nymph	10-12	Use on cold riffle edges and seams
Wet	Soft Hackle Pheasant Tail or Partridge and Yellow	14-18	Useful where trout water is cold enough to fish responsibly
Nymph	Tan Caddis Pupa	16-18	Dropper option for colder water

Tactics

Make the thermometer the first tool out of the pack, not an afterthought. The Beaver Kill should be rested for trout at the reported morning temperature. On the Willowemoc, only consider a very short dawn session if the exact reach is safely below 68 F, and stop as soon as the water climbs. Keep fish in the water, use stronger tippet where practical, and skip photos. For normal trout fishing, drive to cold tailwater instead of trying to make low freestone water work through a hot July day.

Gauge Links

Gauge	Flow	Temp	Link
BEAVER KILL AT COOKS FALLS NY	149 cfs	69.8 F	USGS 01420500
WILLOWEMOC CREEK NR LIVINGSTON MANOR NY	33.2 cfs	63.7 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, access, method, clarity, regulation, and safety context.