Delaware River Report: July 29, 2025

The release from Cannonsville is 801 cfs. The extra water is a pulse to keep the Mainstem at Lordville from exceeding 75 degrees in today’s heat. The will likely drop it back down to normal at some point so check the Stilvesille gauge link below for the most up to date information. It’s going to be hot and sunny today so stick to the Upper West or Upper East for the best shot at dry fly fishing. The daytime sulphurs and olives have been hatching in enough numbers to get some fish looking up. Find spots that get shade earlier in the day and be patient. The lower West is a better option for nymphing or swinging wets. The algae up top has made fishing underneath tough. Typical late July conditions.

The Beaverkill, Lower East Branch, and Mainstem water temps are still peaking in the mid to high 70’s. It’s time to give these rivers a break until they cool back down.

Today will be 92 degrees and sunny. Wind will be 5 – 10 mph from the North.

The pulses form Cannonsville to keep the Mainstem from hitting 75 degrees
It’s that time of year. August 15 – 16. Let’s clean up the river!

What’s Hatching:
Slate Drake – #12-2xl – 12 – Isonychia bicolor
Light Cahill – #14 – Epeorus vitreus (male), Ephemeralla rotunda, Ephemerella invaria
Pale Evening Dun – #14 – Epeorus vitreus (female)
Sulphur – #16 – 20 – Ephemerella dorothea
Dark Blue Wing Olive – #16 – 18 – Baetis spp.
Tan Caddis – #16 – 18 – Hydropsyche spp.
Tiny Blue Wing Olive – #22 – 26 – Pseudocloeon sp.


Click on the gauge links below for the latest flow information.

View the current local weather conditions.

Click on any gauge for the most recent data:
West Branch at Stilesville, NY720 cfs46°
West Branch at Hale Eddy, NY861 cfs48°
East Branch at Harvard, NY165 cfs60°
East Branch at Fishs Eddy, NY405 cfsN/A °
Mainstem at Lordville, NY1,210 cfs69°
Beaverkill at Cooks Falls, NY161 cfs72°
West Branch at 191 Bridge60°
West Branch at Walton (Cannonsville inflow)140 cfs73°
Cannonsville Reservoir Release801 cfs
Cannonsville Reservoir Capacity90.4%
Pepacton Reservoir Capacity92.1%
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