Green Drake Season Peaks on Catskills and Adirondack Trout Streams

What's Biting

What's Next

With flows at 229 cfs (USGS gauge 01413500) and 68.5 cfs (USGS gauge 01415000) as of the evening of May 23, both reaches are in fishable condition for wading anglers. The higher reading at the first gauge suggests some of the upper drainage is still shedding late-spring snowmelt or recent rain. Keep an eye on water clarity; if the main stem looks off-color, move to smaller tributary water where flows are likely lower and visibility better.

The next two to three days are where this window gets interesting. Flylords Mag makes clear that the East Coast green drake season runs from early May through late June, placing the coming Memorial Day weekend squarely within the prime emergence corridor. Plan evening sessions starting around 5 PM and staying through last light, when the largest flies in a Catskills angler's box are most likely to draw fish off the bottom. Standard presentation is a large Comparadun or extended-body pattern fished on a drag-free drift in slower riffles and pools. The fish are looking up, and competition among large browns for the surface food can make them unusually aggressive.

Before the evening show begins, daytime nymphing remains productive. MidCurrent's recent fly-tying features emphasize beaded dark nymphs for overcast days and spare midge-style patterns for clear, pressured sections where fish have seen everything. This approach translates directly to tailrace stretches and limestone spring-creek sections where Catskills fish grow selective.

Sulphur emergence adds a second act to the evening. Gink and Gasoline notes that warm weather can push Sulphur and Light Cahill emergence ahead of typical scheduling; these smaller flies may come off earlier than expected, potentially overlapping with the green drake window. Carry size 16-18 emergers and spent-wing patterns to cover both phases. Flylords also notes the spent caddis as deadly during and after large caddis hatches when trout key on flush, low-riding bugs in the film; late May caddis flights are common on these streams.

For the Memorial Day weekend specifically: pressure on the most accessible pools will be high. Plan a dawn session before crowds arrive, or walk in to sections that require more than a roadside pull-off. First Quarter moon supports active feeding into the evening hours, so a split session, early morning and dusk, is the most efficient use of a holiday weekend.

Context

Late May is the season on Catskills trout streams, perhaps the most celebrated stretch of fishing in the northeastern United States. The Catskills gave American fly fishing much of its foundational vocabulary: the Hendrickson, the Quill Gordon, the Cahills, all developed on these waters. By Memorial Day weekend, the hatches that defined the tradition, including green drakes, Sulphurs, and caddis, are at or near their peak.

Current gauge readings of 229 and 68.5 cfs suggest conditions are broadly in line with a normal late May on these drainages. Without water temperature data from either gauge, it is difficult to say whether the season is running warm or cool relative to historical norms. Gink and Gasoline has observed that warm springs can compress hatch windows, pushing emergence weeks ahead of typical scheduling, which would favor anglers who stay attentive to real-time evening conditions rather than defaulting to a fixed calendar date.

The Battenkill, just across the Vermont state line but ecologically connected to this region's fly fishing culture, received attention this season via MidCurrent, which highlighted a fundraising auction supporting Battenkill restoration work. That ongoing conservation effort is a reminder that habitat quality directly shapes what late-May hatches look like year over year: healthier stream corridors support denser insect populations and larger fish, and restoration investments made now pay dividends for decades.

Adirondack streams follow a slightly different rhythm than the limestone Catskills. Brook trout rather than browns dominate the headwaters, and freestone flows can drop faster in June once snowmelt is finished. Late May is the best moment before summer drawdown begins in earnest, making this an especially valuable window for Adirondack brook trout fishing in particular.

No state agency data is available in today's feeds, so a direct comparison against prior-year stocking tallies or creel survey results is not possible here. General regional knowledge suggests late May is consistently the most productive window for wild trout on both drainages, and that pattern holds absent a drought or major flood event.