Delaware River Report: August 12, 2025

The release from Cannonsville is 720 cfs this morning as we received another overnight pulse of water. We expect it to drop back to 500 cfs later this morning. We’ll have another typically warm and sunny August day. Even though we have cool water near the dams and through the West Branch, the bright sun will make the fish wary. Look for shaded areas and have your olives ready for the evening.

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 90 degrees and sunny. Winds light and variable.

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, NY855 cfs47°
East Branch at Harvard, NY163 cfs58°
East Branch at Fishs Eddy, NY286 cfsN/A
East Branch at Hancock, NY72°
Mainstem at Lordville, NY956 cfs65°
Beaverkill at Cooks Falls, NY104 cfs68°
West Branch at 191 Bridge57°
West Branch at Walton (Cannonsville inflow)68 cfs70°
Cannonsville Reservoir Release801 cfs
Cannonsville Reservoir Capacity81.5%
Pepacton Reservoir Capacity88.1%
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