Delaware River Report: July 21, 2026

The release from Cannonsville is 500 cfs. There have been some localized spotty showers this morning. The better chance of rain is in the afternoon. Total rainfall should be around 1/2″. Sulphurs, Cahills, Isonychias, olives, and some caddis are all hatching. The daytime sulphurs are hatching in Deposit mixed with some olives and a few Isonychias. Smaller seems to be better. Stick to the lower West if you want to nymph. The algae has been bad up top making it a dry fly only game.

Today will be 78 degrees and cloudy Showers and thunderstorms are possible. Wind will be 10 – 15 mph from the South.



What’s Hatching:
Dark Blue Wing Olive – #16 – 18 – Baetis vagans
Sulphur – 16 – 20 – Ephemerella dorothea
Tan Caddis – #16 – 20 – Hydrosyche sp
Light Cahill – #14 – Epeorus vitreus, Ephemerella invaria, Stenacron spp.
Slate Drake – #12-2xl – 12 – Isonychia bicolor


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, NY499 cfs45°
West Branch at Hale Eddy, NY566 cfs48°
East Branch at Harvard, NY185 cfs58°
East Branch at Fishs Eddy, NYN/A N/A
East Branch at Hancock, NY354 cfs70°
Mainstem at Lordville, NY1,040 cfs66°
Beaverkill at Cooks Falls, NY135 cfs68°
West Branch at 191 Bridge58°
West Branch at Walton (Cannonsville inflow)263 cfs66°
Cannonsville Reservoir Release500 cfs
Cannonsville Reservoir Capacity78%
Pepacton Reservoir Capacity86.4%

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