Delaware River Report: August 18, 2025

The release from Cannonsville is 631 cfs. We have a few days of cooler weather ahead of us which is a welcome relief. The hatches have still been mostly olives with some lingering Sulphurs. We’ve been catching a lot of fish blind casting Isonychias and Cahills in the riffles. We’ll still have sun most days so nymphing or swinging wets would be the best bets midday. Streamers have been good in low light either early in the morning or after the sun drops.

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 77 degrees and partly cloudy. Wind will be 5 – 10 mph from the North.

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, NY574 cfs47°
West Branch at Hale Eddy, NY679 cfs50°
East Branch at Harvard, NY165 cfs58°
East Branch at Fishs Eddy, NY265 cfsN/A
East Branch at Hancock, NY72°
Mainstem at Lordville, NY919 cfs65°
Beaverkill at Cooks Falls, NY89 cfs69°
West Branch at 191 Bridge57°
West Branch at Walton (Cannonsville inflow)65 cfs70°
Cannonsville Reservoir Release631 cfs
Cannonsville Reservoir Capacity79.6%
Pepacton Reservoir Capacity87.2%

Delaware River Report: August 17, 2025

The release from Cannonsville is 699 cfs. Get Trashed in the Catskills was a huge success. The volunteers are awesome and we think we set a new tire record. Today we’re cleaning up after the cleanup so we’ll resume our regular reports tomorrow.

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 86 degrees with a mix of clouds and sun. There is a chance of rain showers in the afternoon. Total rainfall should be .04″. Wind will be 5 – 10 mph from the West.

100 tires, a trailer of metal, and dumpster of garbage was pulled from the river yesterday
Clay with a Tiger on an olive dry yesterday. Tim Glynn photo
Maria with a nice brown on a dry yesterday. Tim Glynn photo

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, NY644 cfs48°
West Branch at Hale Eddy, NY749 cfs49°
East Branch at Harvard, NY165 cfs59°
East Branch at Fishs Eddy, NY270 cfsN/A
East Branch at Hancock, NY75°
Mainstem at Lordville, NY1,060 cfs67°
Beaverkill at Cooks Falls, NY92 cfs72°
West Branch at 191 Bridge56°
West Branch at Walton (Cannonsville inflow)67 cfs72°
Cannonsville Reservoir Release699 cfs
Cannonsville Reservoir Capacity79.6%
Pepacton Reservoir Capacity87.2%

Delaware River Report: August 16, 2025

The release from Cannonsville is 631 cfs. It looks like we’re dealing with sun again. There have been some small olives in the afternoon but the best dry fly fishing has been in the evening with olives, cahills, and Isonychias. Blind casting the riffles could put some fish in the net midday but nymphing or swinging wets would be better choices. Today is our ninth Get Trashed River Cleanup. If you’re in the area and want to help clean the river we’re meeting here at the fly shop at 10 am.

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 86 degrees with and partly cloudy. There is a slight chance of a stray shower in the afternoon. Wind will be 5 – 10 mph from the South.

Ron Reedy with one in the net yesterday
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, NY583 cfs47°
West Branch at Hale Eddy, NY668 cfs48°
East Branch at Harvard, NY170 cfs60°
East Branch at Fishs Eddy, NY278 cfsN/A
East Branch at Hancock, NY74°
Mainstem at Lordville, NY1,030 cfs69°
Beaverkill at Cooks Falls, NY96 cfs71°
West Branch at 191 Bridge57°
West Branch at Walton (Cannonsville inflow)73 cfs72°
Cannonsville Reservoir Release631 cfs
Cannonsville Reservoir Capacity79.6%
Pepacton Reservoir Capacity87.2%

Delaware River Report: August 15, 2025

The release from Cannonsville is 500 cfs. We’re back to normal Summer conditions. There have been some small olives on the Upper West. The Sulphurs have definitely waned but we’re still seeing a few small flushes. We’re seeing some olives, Cahills, and Isonychias offering some shots. It’s happening mainly in the evening but there were some bugs out in the afternoon yesterday. Look for banks that get shade earlier in the day. Nymphing or swinging wets will be the best bets during the day with most of the hatches coming in 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 87 degrees with sun shine early and some clouds in the afternoon. Wind will be light and variable.

Ed with a nice one on a cahill. Ron Reedy photo
Ron Reedy on a Sulphur dry yesterday
Sam Jones with one in the dark. Bennett Ragland 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, NY462 cfs47°
West Branch at Hale Eddy, NY537 cfs49°
East Branch at Harvard, NY175 cfs59°
East Branch at Fishs Eddy, NY295 cfsN/A
East Branch at Hancock, NY73°
Mainstem at Lordville, NY984 cfs69°
Beaverkill at Cooks Falls, NY103 cfs70°
West Branch at 191 Bridge59°
West Branch at Walton (Cannonsville inflow)82 cfs72°
Cannonsville Reservoir Release500 cfs
Cannonsville Reservoir Capacity80.1%
Pepacton Reservoir Capacity87.4%

Delaware River Report: August 14, 2025

The release from Cannonsville is 500 cfs. Yesterday’s rain bumped the river flows slightly but they are pretty much back to where we started yesterday. The West branch is clear and is at a good level for floating and wading. Olives have made up most of the hatches but there are some Isonychias and Cahills around. blind casting casting worked well on the lower West before the hatches. Nymphing or swinging wets in the riffles should produce today too. Streamer would be best early or late before or after the sun hits the water.

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 86 degrees and partly cloudy. There is a slight chance of a showerr or stray thunderstorm. Winds from the NW at 5 to 10 mph.

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, NY462 cfs47°
West Branch at Hale Eddy, NY552 cfs50°
East Branch at Harvard, NY205 cfs57°
East Branch at Fishs Eddy, NY343 cfsN/A
East Branch at Hancock, NY74°
Mainstem at Lordville, NY1,000 cfs67°
Beaverkill at Cooks Falls, NY116 cfs71°
West Branch at 191 Bridge57°
West Branch at Walton (Cannonsville inflow)104 cfs71°
Cannonsville Reservoir Release500 cfs
Cannonsville Reservoir Capacity80.4%
Pepacton Reservoir Capacity87.6%

Delaware River Report: August 13, 2025

The release from Cannonsville is back to 500 cfs. It’s slightly cooler today and there’s a chance for thunderstorms this afternoon and some much needed rain. Look for olives hatching after the rainfall and try some blind casting in the riffles with Isos beforehand.

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 82 degrees with some potential thunderstorms in the afternoon. Winds from the SW at 5 to 10 mph.

George with a chunky rainbow. John Loughlin photo
Dave found fish eating. John Loughlin photo
Mlke with a beautifully colored and spotted rainbow. Sean Witman photo
Bennett found a nice brown. Sam Jones 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, NY462 cfs47°
West Branch at Hale Eddy, NY547 cfs47°
East Branch at Harvard, NY163 cfs59°
East Branch at Fishs Eddy, NY281 cfsN/A
East Branch at Hancock, NY75°
Mainstem at Lordville, NY947 cfs66°
Beaverkill at Cooks Falls, NY102 cfs70°
West Branch at 191 Bridge59°
West Branch at Walton (Cannonsville inflow)64 cfs73°
Cannonsville Reservoir Release500 cfs
Cannonsville Reservoir Capacity80.9%
Pepacton Reservoir Capacity87.9%

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%

Delaware River Report: August 11, 2025

The release from Cannonsville is 801 cfs this morning as we received another overnight pulse of water. We expect it to drop back to 500 cfs later this morning. Expect another warm and sunny day, so look for cooler water near the dams and shaded areas. Your best time for rising fish will be evening but try blind casting the large Cahills and Isos in the riffles.

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 88 degrees and sunny. Winds from the South at 5 to 10mph.

Chris Brown put a nice one in the net yesterday.
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, NY165 cfs58°
East Branch at Fishs Eddy, NY292 cfsN/A °
Mainstem at Lordville, NY975 cfs66°
Beaverkill at Cooks Falls, NY109 cfs68°
West Branch at 191 Bridge57°
West Branch at Walton (Cannonsville inflow)70 cfs74°
Cannonsville Reservoir Release500 cfs
Cannonsville Reservoir Capacity83.1%
Pepacton Reservoir Capacity88.9%

Delaware River Report: August 10, 2025

The release from Cannonsville is 699 cfs this morning from the overnight pulse to cool down the Mainstem. That should taper back to 500 cfs later this morning. We’ll be warmer and sunny today once the fog burns off. The Upper West has had tiny olives with some Sulphurs midday. The lower West has had olives and some Isonychias and Cahills towards evening. We’ve seen small olive spinners in the evening so have a few options in your box for those last light fish.

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 87 degrees and sunny. Wind will be light and variable.

Angelos with a nice rainbow yesterday. Tim Glynn photo
Neal putting one in the net with Guide Sean Witman.
Angelos also found a brown. 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, NY626 cfs46°
West Branch at Hale Eddy, NY754 cfs47°
East Branch at Harvard, NY165 cfs58°
East Branch at Fishs Eddy, NY303 cfsN/A °
Mainstem at Lordville, NY984 cfs67°
Beaverkill at Cooks Falls, NY116 cfs66°
West Branch at 191 Bridge57°
West Branch at Walton (Cannonsville inflow)79 cfs70°
Cannonsville Reservoir Release500 cfs
Cannonsville Reservoir Capacity83.1%
Pepacton Reservoir Capacity88.9%

Delaware River Report: August 9, 2025

The release from Cannonsville is 500 cfs. We’re in typical mud August conditions. We’ll have sun today with no wind. The Upper West has had tiny olives with some Sulphurs midday. The lower West has had olives and some Isonychias and Cahills towards evening. Blind casting bigger flies or nymphing have been the best bets during the day. We have seen some spinners mixed with the duns during the hatch so double check what the fish are eating if you’re getting refusals.

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 82 degrees and sunny. Wind will be light and variable.

Tim Glynn with one in the net
Tim with another yesterday
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, NY462 cfs46°
West Branch at Hale Eddy, NY547 cfs48°
East Branch at Harvard, NY167 cfs58°
East Branch at Fishs Eddy, NY320 cfsN/A °
Mainstem at Lordville, NY1,020 cfs67°
Beaverkill at Cooks Falls, NY129 cfs67°
West Branch at 191 Bridge57°
West Branch at Walton (Cannonsville inflow)83 cfs70°
Cannonsville Reservoir Release500 cfs
Cannonsville Reservoir Capacity83.1%
Pepacton Reservoir Capacity88.9%

Delaware River Report: August 8, 2025

The release from Cannonsville is 500 cfs. We had a very brief but heavy rain shower yesterday afternoon but the river flows didn’t budge and the rain was absorbed in to the ground. Today looks like a repeat of yesterday. We’ll have sun and light wind. The Upper West Branch was mostly small olives yesterday with a few sulphurs. There is algae so if you want to nymph stay on the lower West. We’ve also had some hatchng towards dark on the lower West. Mainly olives with some Isonychias and a few Cahills mixed in.

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 81 degrees and partly cloudy. Wind will be 5 – 10 mph from the South.

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, NY462 cfs46°
West Branch at Hale Eddy, NY547 cfs48°
East Branch at Harvard, NY180 cfs57°
East Branch at Fishs Eddy, NY317 cfsN/A °
Mainstem at Lordville, NY1,010 cfs65°
Beaverkill at Cooks Falls, NY152 cfs67°
West Branch at 191 Bridge57°
West Branch at Walton (Cannonsville inflow)89 cfs70°
Cannonsville Reservoir Release500 cfs
Cannonsville Reservoir Capacity83.6%
Pepacton Reservoir Capacity89.1%

Delaware River Report: August 7, 2025

The release from Cannonsville is 500 cfs. We’re coming off a cool night and the water temps are starting off a couple of degrees cooler than yesterday. We should have a bit more sun so they’ll climb a bit this afternoon. So it’s the same, normal August program. Midday sulphurs and olives on the Upper West and Upper East. The bugs have been a bit spotty on some sections so if you’re not seeing much mid afternoon move up or down a couple of pools. If you want to nymph or swing wets stick to the lower West Branch due to the algae in Deposit. The lower West has been decent for blind casting Isonychias and Cahills and has had some hatching as the sun drops.

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 81 degrees and partly cloudy. There may some smoke in the air causing some haze but it should be less than yesterday. Wind will be 5 – 10 mph from the South.

Omar found some yesterday. Sean Witman photo
Sam Jones with a nice one yesterday. Sean Witman 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, NY462 cfs46°
West Branch at Hale Eddy, NY552 cfs48°
East Branch at Harvard, NY180 cfs55°
East Branch at Fishs Eddy, NY320 cfsN/A °
Mainstem at Lordville, NY1,020 cfs65°
Beaverkill at Cooks Falls, NY124 cfs67°
West Branch at 191 Bridge55°
West Branch at Walton (Cannonsville inflow)87 cfs69°
Cannonsville Reservoir Release500 cfs
Cannonsville Reservoir Capacity84.1%
Pepacton Reservoir Capacity89.4%
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