Delaware River Report: August 21, 2025

The release from Cannonsville is 534 cfs. We had periods of much needed rain yesterday but the flows only bumped slightly and are in good shape today. The cooler temps have helped the fishing and we’ll have another nice day for fishing today. Have your olives with you in several patterns and try blind casting Isos in the riffles.

Today will be 74 degrees and cloudy. Winds will be 5 – 10 mph from the Northeast.

Joe found a nice brown in between rain showers. Sean Witman photo
Rob with a pretty rainbow yesterday. Sean WItman photo
Marjory found a good one yesterday.

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, NY497 cfs47°
West Branch at Hale Eddy, NY674 cfs50°
East Branch at Harvard, NY203 cfs52°
East Branch at Fishs Eddy, NY326 cfsN/A
East Branch at Hancock, NY63°
Mainstem at Lordville, NY1260 cfs58°
Beaverkill at Cooks Falls, NY109 cfs62°
West Branch at 191 Bridge53°
West Branch at Walton (Cannonsville inflow)218 cfs62°
Cannonsville Reservoir Release534 cfs
Cannonsville Reservoir Capacity76.7%
Pepacton Reservoir Capacity85.8%
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