Delaware River Fly Fishing Report
Roscoe, Sullivan County, New York · Last Updated: June 1, 2026
The Upper Delaware system is a legendary wild trout fishery in the Catskills of New York. It's known for its challenging, technical dry fly fishing for wary brown and rainbow trout.
Today's Fishability
Conditions at a Glance
The Delaware River near Roscoe is running well below normal, with main-stem flows at Lordville and Callicoon around 1310-1560 cfs (-69% vs average) and most tributaries showing sim…
- Low summer flows may concentrate and stress fish
- Low water - fish may be spooky
- Flow significantly off optimal
- Low summer flows stress fish
How Do You Fish a 5.5/10 Day?
See the fly patterns built for today's conditions, where the fish are holding, and how to work the 5:30 AM - 9:00 AM, 6:00 PM - 8:00 PM window. The full read takes 10 seconds to unlock.
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USGS Water Monitoring
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Delaware River Fly Fishing — FAQ
Is the Delaware River fishing well right now?
DriftWise scores the Delaware River every morning on a 0–10 fishability scale that weighs real-time USGS flow and water temperature, National Weather Service forecasts, and lunar data. Check the live fishability score and condition summary above for today's rating before you head out.
What is the current water flow on the Delaware River?
The Delaware River's flow is tracked by USGS streamflow gauges near Roscoe, Sullivan County, New York and refreshed daily in the condition summary above. Flow is reported in cubic feet per second (cfs) and compared against the seasonal average so you can see whether the river is running high, low, or normal.
What is a good water temperature for trout on the Delaware River?
Trout feed most actively when water temperatures sit roughly between 48°F and 62°F. DriftWise reads live Delaware River water temperature from USGS sensors near Roscoe, Sullivan County, New York — see the summary above for the current value.
When is the best time of day to fish the Delaware River?
The most productive windows shift with the season: cold months fish best around midday (10 AM–2 PM) once the water warms, while summer rewards early mornings and evenings. Each Delaware River report factors in the current season.
Do I need a fishing license to fly fish the Delaware River?
Yes. A valid New York fishing license is required to fish the Delaware River. Check current New York regulations for seasons, limits, and any special catch-and-release or fly-fishing-only sections before you go.
Is the DriftWise Delaware River fishing report free?
Yes. The daily Delaware River condition summary — flow, water temperature, weather, and fishability score — is free. A free account (3 reports per month) unlocks the full AI analysis with fly-pattern recommendations and a detailed hatch forecast.
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