Catskills, New York
Beaverkill-Willowemoc Fishing Report: August 8, 2026
The Beaverkill and Willowemoc are trout-temperature-limited today, with elevated Beaverkill flow, warm freestone water, and afternoon thunderstorms making this a short, cautious morning option.
- Status
- tough
- Flow trend
- falling
- Best window
- Morning only where temperatures stay safely below 68 F; shift to colder tailwater water for the afternoon
- Best methods
- nymphs, wet flies, dry-dropper
Quick Summary
The Beaverkill-Willowemoc report remains tough for trout. USGS showed the Beaver Kill at 991 cfs, 3.60 feet, and 64.8 F near Cooks Falls, while Willowemoc Creek was 221 cfs, 2.71 feet, and 64.4 F near Livingston Manor during the morning report check. The Beaverkill is falling after the overnight bump, but both freestones are already in the mid 60s before an 82 F forecast high. Fish only the coolest morning water, carry a thermometer, and use the West Branch or another colder tailwater for the better afternoon plan.
Conditions Snapshot
| Field | Value |
|---|---|
| Status | Tough. The water is technically fishable in places, but warm freestone temperatures, elevated Beaverkill flow, and storms limit the trout window |
| Flow | 991 cfs at Beaver Kill at Cooks Falls; 221 cfs on Willowemoc Creek near Livingston Manor |
| Gauge Height | 3.60 feet at Cooks Falls; 2.71 feet near Livingston Manor |
| Water Temp | 64.8 F at Cooks Falls; 64.4 F near Livingston Manor during the morning check |
| Clarity | Not reported by official gauges. Recent storm bumps can leave edge stain and debris; verify before wading |
| Trend | Falling on the Beaverkill over the prior six hours, from 1,130 cfs to 991 cfs; Willowemoc trend not fully available from the morning pull |
| Best Window | Morning only where readings stay safely below 68 F |
| Best Method | Short nymph rigs, wet flies, or dry-dropper searching in soft edges and pockets |
| Wadeability | Limited. Avoid pushy midstream crossings, stained slots, and any water that requires bracing against the main current |
Weather
For the Roscoe and Livingston Manor area, the National Weather Service forecast calls for patchy morning fog, a partly sunny day, a high near 82 F, west wind 2 to 7 mph, and scattered showers and thunderstorms developing during the afternoon. That forecast can warm the freestones quickly and can also add localized runoff. Lightning, rising color, and any trout-water reading near 68 F are all reasons to stop.
River Notes
The Beaverkill is still carrying a strong summer flow at Cooks Falls. Falling water is better than rising water, but 991 cfs is not casual wading, especially around ledges, pushy riffles, and heavy bank current. If you fish it, stay on the edges, choose short reachable casts, and skip crossings that would be routine at lower summer flows.
The Willowemoc is smaller and more approachable in selected spots, but the trout-temperature issue is the same. Morning readings in the mid 60s can move into stressful range quickly under warm air and partial sun. The Horton Brook thermal refuge regulation remains in effect on the Beaverkill from Iron Bridge at Horton downstream to the first Route 17 overpass through August 31; do not fish that closed refuge water. For any afternoon trout fishing, the colder Upper Delaware tailwaters are the more responsible choice.
Hatch Activity
Official gauges do not report hatches. Current Catskills source context supports Blue Winged Olives, sulphurs, Isonychias, Light Cahills, tan caddis, rusty spinners, tricos, and terrestrial patterns, but today's practical limitation is temperature rather than bug variety. Treat surface fishing as an opportunistic morning program only if the water is cool enough.
| Hatch | Size | Notes |
|---|---|---|
| Blue Winged Olive | 16-22 | Best in cloud cover, light rain, or shaded slicks |
| Sulphur | 16-20 | Possible in cooler water, but avoid extending the day if temperatures climb |
| Isonychia | 10-14 | Strong nymph, wet-fly, and dry-dropper profile for broken water |
| Tan Caddis | 16-18 | Pupa and soft hackles can cover riffles and pocket seams |
| Light Cahill | 14-16 | Carry for lower-light activity only where water stays cold enough |
| Trico | 20-24 | Morning flat-water option if fish are working tiny bugs and temperatures allow |
| Ants and Beetles | 14-20 | Summer bank option around grass and shade, again only in safe-temperature water |
Recommended Flies
| Category | Fly | Size | Notes |
|---|---|---|---|
| Nymph | Pheasant Tail, Frenchie, or Perdigon | 14-18 | Good first rig in pockets, edge seams, and walking-speed current |
| Nymph | Isonychia Nymph | 10-12 | Use around riffle edges, pocket water, and stained seams |
| Nymph | Caddis Pupa | 14-18 | Fish below a buoyant dry or as part of a short-line rig |
| Wet | Soft Hackle Pheasant Tail or Partridge and Yellow | 14-18 | Swing through broken current when bugs are present but rises are scattered |
| Dry | BWO Comparadun or CDC Emerger | 16-22 | Use only when fish show in water that remains safely cool |
| Dry | Sulphur Sparkle Dun or Light Cahill | 14-20 | Carry for protected morning surface activity |
| Dry | Isonychia Parachute or Foam Iso | 10-14 | Good dry-dropper lead fly in pocket water |
| Dry | Ant or Beetle | 14-20 | Fish tight to shaded banks if water temperature is safe |
| Streamer | Small Woolly Bugger or Sculpin | 6-10 | Use sparingly along stained banks; do not prolong trout handling in warm water |
Tactics
Make this a short, thermometer-led session, not a full-day trout plan. Start with a short nymph or dry-dropper rig from the bank or shallow edge positions, and put the fly beside rocks, inside seams, and soft cushions instead of stepping into the heavy center flow. If fish rise to olives, tricos, sulphurs, or terrestrials, make a few careful presentations and move on. End the trout session before readings reach 68 F, when thunder is nearby, or if a storm puts fresh stain through the reach.
Gauge Links
| Gauge | Flow | Temp | Link |
|---|---|---|---|
| BEAVER KILL AT COOKS FALLS NY | 991 cfs | 64.8 F | USGS 01420500 |
| WILLOWEMOC CREEK NR LIVINGSTON MANOR NY | 221 cfs | 64.4 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.