Catskill Mother's Day Caddis window opens

What's Biting

What's Next

**Flows and Wade Access**

At 387 cfs, the East Branch Delaware at Margaretville is running on the fuller side of a typical early-May reading. Fish it from mid-channel seams and slower inside bends where trout can hold without fighting heavy current. The Beaverkill at 104 cfs offers more forgiving wade access — most standard runs and riffles should be reachable without difficulty. Both streams will respond quickly to any mid-week precipitation, so check the USGS gauge data the morning you plan to go out.

**The Hatch Window**

Mother's Day falls on May 10, placing the peak of the Grannom caddis (Brachycentrus) hatch — the region's iconic Mother's Day Caddis emergence — just days away. On classic Catskill water, this hatch historically triggers some of the most consistent dry-fly rises of the season. Hatch Magazine's current feature on caddis emergences makes the case that reading the pupa-to-adult transition is the key edge: fishing a Grannom pupa pattern in or just below the film, in tandem with a caddis dry, often outproduces either fly alone as fish key on struggling emergers. Plan for the most productive windows to run late morning through early afternoon, when ambient temperatures push insects to the surface in numbers.

The waning gibbous moon can push nocturnal feeding behavior, which often translates to willing risers at first light the following morning — worth noting for anyone planning an early hike-in to a backcountry pool.

**Subsurface in the Meantime**

Until the caddis triggers consistent surface activity, subsurface presentations are the reliable fallback. MidCurrent's tying content this week features a beaded purple nymph built for low-light and overcast conditions, and a spare midge-style pattern suited to clear, pressured tailwater stretches — both approaches well-suited to Catskill pools and tailouts before hatches fully ignite. Standard nymphing through deeper pockets and runs in sizes 14–16 remains a sensible baseline while you wait for the first consistent rises.

**Adirondacks Outlook**

Adirondacks streams and stillwaters should be reaching prime spring brook trout conditions through mid-May. Flylords Mag recently flagged the Raquette River as a productive Adirondacks multi-species destination; northern pike are typically in aggressive post-spawn feeding mode through the first two weeks of May, and a large streamer worked through slower eddy lines and woody flats is the go-to presentation. Brook trout in higher-elevation headwater streams will also be feeding actively as temperatures climb toward their optimal range.

Context

Early May on Catskill trout water is, in a typical year, the finest stretch of the entire season. The Hendrickson emergence that defines late April gives way to the Grannom caddis, which in turn overlaps with Sulphur and March Brown activity through late May. When all three align — stable flows, climbing water temperatures, and moderate air — the Catskills produce the kind of hatch-driven dry-fly fishing that defines the region's reputation nationwide.

The 2026 gauge readings offer a partial picture. The Beaverkill at 104 cfs and East Branch Delaware at 387 cfs are both workable for this date, though the East Branch is running slightly elevated compared to what most guides prefer for comfortable wade access and good sight angles. The critical missing variable is water temperature: no readings are available from either USGS site today. The Grannom emergence typically peaks when stream temperatures reach the 50–58°F range — if this spring has trended warm, the hatch may already be underway on lower-elevation Catskill reaches; if it has been cold, it could still be a few days out.

No state agency condition reports are available in today's data feeds for this specific region, which limits direct comparison to prior seasons. What the broader angler-intel sources do confirm is a regional trend: MidCurrent notes that hatches are beginning to fire across northeastern trout streams heading into the first week of May 2026, and the site's recent coverage of the Battenkill restoration auction signals continued community investment in New York-region fisheries as the season ramps up.

Historically, the first two weeks of May rank among the top windows of the year for Catskill trout. If flows continue easing toward mid-May medians and temperatures cooperate, 2026 appears positioned to deliver a strong caddis season on both the Beaverkill and Delaware drainages.