Catskills sulphurs still popping, but browns stay picky

What's biting

What's next

With a full moon overhead and no fresh gauge or buoy data feeding into this update, plan around light and heat rather than a specific flow number. Summer moon phases tend to push feeding activity into the night, so Catskills and Adirondacks trout are likely doing more of their serious eating in the dark and at first light than mid-day, and anglers should expect a compressed, early morning window before the sun gets on the water.

If the West Branch Delaware sulphur pattern reported on The Fly Fishing Forum holds over the next few days, look for the hatch to keep tapering as July closes out, with duns coming off earlier in the morning and spinners falling in the evening rather than the mid-morning timing described in that report. Fish that ignored duns during a heavy hatch are a classic sign of a hatch past its peak or fish keyed on emergers and spinners instead of the adult — worth dropping to a soft-hackle emerger or a low-riding spinner pattern if dry-fly refusals keep piling up.

As sulphurs fade, expect terrestrials to take over as the primary summer food source on freestone Catskills and Adirondacks water — ants, beetles, and eventually hoppers are the typical mid-to-late-summer staple, a seasonal shift Caddis Fly has been covering in its recent terrestrial-pattern tying posts. Early risers willing to fish a Trico spinner fall at first light, the kind of tactic Gink and Gasoline has written about on other tailwaters, could also find a reliable dawn window before the terrestrial bite kicks in later in the day.

Over the weekend, plan to be on the water at first light or right at dusk, use the full moon to your advantage for an early start, and carry both small emerger patterns and a terrestrial box so you can pivot as the hatch situation changes hour to hour. If daytime heat continues to build, consider giving fish a rest during the hottest afternoon hours — stressed, warm-water trout handled at midday don't recover as well, regardless of how gently they're released.

Context

Late July is typically a transition period on Catskills and Adirondacks trout water: the prolific spring and early-summer mayfly hatches (Hendricksons, March Browns, and early sulphurs) are winding down, and what's left of the sulphur emergence — like the one described on the West Branch Delaware in this cycle's forum chatter — tends to be sparser and more technical than the heavy May hatches, which tracks with the picky, hard-to-match fish reported there. Terrestrial season is the typical next phase for freestone streams in this region and usually carries fishing through August.

The Trout Unlimited/NY DEC South Branch Moose River project is a multi-year habitat effort rather than a short-term conditions story, but it's a useful marker of how much attention Adirondacks brook trout water is getting right now — 44 miles and 63 culverts is a large-scale reconnection push, and it signals ongoing investment in that fishery's long-term health rather than a one-off announcement.

We don't have a direct NY state agency or regional shop report in this cycle's feed calling out specific stream-by-stream conditions, so take the West Branch Delaware account as one angler's outing rather than a confirmed regional pattern. Compared to a typical late-July stretch, nothing here points to conditions running unusually early or late — this reads as a fairly standard late-summer lull between hatch cycles.