Delaware River Report: July 20, 2025

We have clouds and fog to start off this morning. The forecast has been changing a lot but right now we may see some scattered afternoon thunderstorms. Total rainfall should be .17″ but we may see the wind pick up as they pass through. Despite the couds the best shot at hatches will be the afternoon sulphurs on the Upper West and Upper East. We may see some bugs on the lower West if we get the rain. The clouds should help the nymphing and blindcasting.

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

Today will be 83 degrees with scattered afternoon thunderstorms. Rainfall should be .17″. Wind will be 5 – 10 mph from the South.

Keegan with his first fish towards his merit badge. Tim Glynn photo
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, NY497 cfs46°
West Branch at Hale Eddy, NY617 cfs48°
East Branch at Harvard, NY232 cfs58°
East Branch at Fishs Eddy, NY586 cfsN/A °
Mainstem at Lordville, NY1,570 cfs67°
Beaverkill at Cooks Falls, NY234 cfs68°
West Branch at 191 Bridge59°
West Branch at Walton (Cannonsville inflow)181 cfs69°
Cannonsville Reservoir Release549 cfs
Cannonsville Reservoir Capacity93.6%
Pepacton Reservoir Capacity94.3%
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