Author: Jeff White
Delaware River Report: September 5, 2025
The release from Cannonsville is 450 cfs. The release was likely dropped in anticipation of the rain adding enough runoff to meet the flow target in Montague, NJ. Most of that rain seemed to miss us. None of the gauges are showing a significant bump and most flows have peaked and are falling. Keep an eye on the Stilesville gauge in case they increase the release today to hit the flow target in Montague. The lower water should make nymphing and blind casting dries more effective. And concentrate the bugs in the afternoon / evening. Olives, Isonychias, Cahills, and hebes are out. have some flying ants with you just in case.
Today will be 79 degrees and cloudy. It will clear to partly cloudy in the afternoon. . Wind will be 10 – 15 mph from the South.
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)
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, NY | 430 cfs | 51° |
| West Branch at Hale Eddy, NY | 499 cfs | 52° |
| East Branch at Harvard, NY | 177 cfs | 57° |
| East Branch at Fishs Eddy, NY | 265 cfs | N/A |
| East Branch at Hancock, NY | 67° | |
| Mainstem at Lordville, NY | 865 cfs | 63° |
| Beaverkill at Cooks Falls, NY | 108 cfs | 64° |
| West Branch at 191 Bridge | 58° | |
| West Branch at Walton (Cannonsville inflow) | 66 cfs | 65° |
| Cannonsville Reservoir Release | 450 cfs | |
| Cannonsville Reservoir Capacity | 69.9% | |
| Pepacton Reservoir Capacity | 80.7% |
Delaware River Report: September 4, 2025
The release from Cannonsville is 495 cfs. The release was likely dropped in anticipation of the rain adding enough runoff to meet the flow target in Montague, NJ. Nymphing or swinging wets will likely be the best bets during the day. The wind will be a bit of an issue so look for protected areas. If the wind drops in the evening or you do find protected areas during the day we should see decent olives. There are also some hebes, Isonychias, and Cahills so have those ready just in case.
Today will be 78 degrees and partly cloudy. We may see some afternoon thunderstorms with rainfall of .19 during the day and another .34 overnight. Wind will be 10 – 20 mph from the South.
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)
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, NY | 469 cfs | 49° |
| West Branch at Hale Eddy, NY | 586 cfs | 50° |
| East Branch at Harvard, NY | 151 cfs | 54° |
| East Branch at Fishs Eddy, NY | 224 cfs | N/A |
| East Branch at Hancock, NY | 64° | |
| Mainstem at Lordville, NY | 1,040 cfs | 59° |
| Beaverkill at Cooks Falls, NY | 65 cfs | 61° |
| West Branch at 191 Bridge | 54° | |
| West Branch at Walton (Cannonsville inflow) | 52 cfs | 63° |
| Cannonsville Reservoir Release | 495 cfs | |
| Cannonsville Reservoir Capacity | 70.3% | |
| Pepacton Reservoir Capacity | 81% |
Delaware River Report: September 3, 2025
The release from Cannonsville is 709 cfs. The lower release will make wading easier but still keeps us at a good level for floating. The cooler nights have really helped the water temps on the other rivers opening up more fishing options. Nymphing or swinging wets will likely be the best bets during the day. We’ve seen decent olives most afternoons mixed with hebes, Isonychias, and Cahills. The fish seem happy to eat the bigger bugs even when we’re not seeing them.
Today will be 77 degrees with sunshine and a few afternoon clouds. Wind will be light and variable.
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)
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, NY | 691 cfs | 50° |
| West Branch at Hale Eddy, NY | 826 cfs | 50° |
| East Branch at Harvard, NY | 151 cfs | 54° |
| East Branch at Fishs Eddy, NY | 228 cfs | N/A |
| East Branch at Hancock, NY | 63° | |
| Mainstem at Lordville, NY | 1,230 cfs | 59° |
| Beaverkill at Cooks Falls, NY | 66 cfs | 60° |
| West Branch at 191 Bridge | 52° | |
| West Branch at Walton (Cannonsville inflow) | 54 cfs | 62° |
| Cannonsville Reservoir Release | 709 cfs | |
| Cannonsville Reservoir Capacity | 70.8% | |
| Pepacton Reservoir Capacity | 81.4% |
Delaware River Report: September 2, 2025
The release from Cannonsville is 935 cfs. The release was most likely bumped up again to meet the 1,750 cfs flow target at Montague, NJ. The West Branch is fine for wading and floating but choose your wade spots carefully. The Upper Mainstem is fishing and is at a great level for wading. Olives have mad up the bulk of the hatch but a lot of fish are willing to eat Cahills and Isonychias. Blind casting the riffles has also been working. We’ll have a bit more sun than yesterday so nymphing or swinging wets might make the most sense during the day.
Today will be 75 degrees and partly cloudy. Wind will be light and variable.
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)
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, NY | 863 cfs | 49° |
| West Branch at Hale Eddy, NY | 978 cfs | 50° |
| East Branch at Harvard, NY | 153 cfs | 54° |
| East Branch at Fishs Eddy, NY | 230 cfs | N/A |
| East Branch at Hancock, NY | 63° | |
| Mainstem at Lordville, NY | 1,250 cfs | 58° |
| Beaverkill at Cooks Falls, NY | 68 cfs | 60° |
| West Branch at 191 Bridge | 52° | |
| West Branch at Walton (Cannonsville inflow) | 58 cfs | 62° |
| Cannonsville Reservoir Release | 935 cfs | |
| Cannonsville Reservoir Capacity | 73% | |
| Pepacton Reservoir Capacity | 82.9% |
Delaware River Report: September 1, 2025
The release from Cannonsville is 931 cfs. The release was most likely bumped up again to meet the 1,750 cfs flow target at Montague, NJ. If Wunderground is correct today looks like a good day to be on the water. We should see more clouds moving in during the afternoon and no wind. Olives have mad up the bulk of the hatch but a lot of fish are willing to eat Cahills and Isonychias. There are some Tricos around but they have been spotty. If you’re looking for them don’t hesitate to move until you find them.
Today will be 75 degrees with a mix of clouds and sun early turning mostly cloudy in the afternoon. Wind will be light and variable.
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)
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, NY | 851 cfs | 49° |
| West Branch at Hale Eddy, NY | 978 cfs | 49° |
| East Branch at Harvard, NY | 163 cfs | 53° |
| East Branch at Fishs Eddy, NY | 239 cfs | N/A |
| East Branch at Hancock, NY | 62° | |
| Mainstem at Lordville, NY | 1,170 cfs | 58° |
| Beaverkill at Cooks Falls, NY | 68 cfs | 60° |
| West Branch at 191 Bridge | 52° | |
| West Branch at Walton (Cannonsville inflow) | 63 cfs | 62° |
| Cannonsville Reservoir Release | 931 cfs | |
| Cannonsville Reservoir Capacity | 73% | |
| Pepacton Reservoir Capacity | 82.9% |
Delaware River Report: August 31, 2025
The release from Cannonsville is 854 cfs. The release was most likely bumped up again to meet the 1,750 cfs flow target at Montague, NJ. There are still places to comfortably wade at this level but use caution. The cool nights have helped the water temps throughout the system and a lot of water has opened back up. The freestones could use some rain though. Olives, Isonychias, and Cahills are still hatching the afternoons and evenings. Some river sections are seeing the hebes and some Tricos.
Today will be 74 degrees and mostly sunny. Winds 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, NY | 783 cfs | 49° |
| West Branch at Hale Eddy, NY | 895 cfs | 49° |
| East Branch at Harvard, NY | 163 cfs | 52° |
| East Branch at Fishs Eddy, NY | 241 cfs | N/A |
| East Branch at Hancock, NY | 60° | |
| Mainstem at Lordville, NY | 1,110 cfs | 57° |
| Beaverkill at Cooks Falls, NY | 70 cfs | 58° |
| West Branch at 191 Bridge | 51° | |
| West Branch at Walton (Cannonsville inflow) | 66 cfs | 59° |
| Cannonsville Reservoir Release | 854 cfs | |
| Cannonsville Reservoir Capacity | 73% | |
| Pepacton Reservoir Capacity | 82.9% |
Delaware River Report: August 30, 2025
The release from Cannonsville is 769 cfs. The release was most likely bumped up again to meet the 1,750 cfs flow target at Montague, NJ. The combination of the extra cold water from the release and the cooler air temps have helped the hatches. We had some fish rising midday yesterday on olives. The cloud cover certainly helped. We’ll have less wind today but more sunshine. We’re coming off a cold night so it’ll take a bit to warm up today. Olives, Isonychias, and Cahills are still around along with some Tricos and some Heptagenia.
Today will be 68 degrees with sun early and a few afternoon clouds. Winds 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, NY | 710 cfs | 49° |
| West Branch at Hale Eddy, NY | 832 cfs | 48° |
| East Branch at Harvard, NY | 163 cfs | 52° |
| East Branch at Fishs Eddy, NY | 245 cfs | N/A |
| East Branch at Hancock, NY | 61° | |
| Mainstem at Lordville, NY | 1,100 cfs | 57° |
| Beaverkill at Cooks Falls, NY | 73 cfs | 58° |
| West Branch at 191 Bridge | 51° | |
| West Branch at Walton (Cannonsville inflow) | 71 cfs | 59° |
| Cannonsville Reservoir Release | 769 cfs | |
| Cannonsville Reservoir Capacity | 73% | |
| Pepacton Reservoir Capacity | 82.9% |
Delaware River Report: August 29, 2025
The release from Cannonsville is 761 cfs. The release was most likely bumped up to meet the 1,750 cfs flow target at Montague, NJ. The West Branch is still at a good level for floating and wading. The cooler nights and cloudy days have helped the water temps throughout the system. the bugs are picking up in the afternoons with olives, some Cahills, Isonychias, and a few Heptagenia hebe. Nymphing or swinging wets are still the best bets during the day but the bugs may come earlier with the weather – especially if we get a light rain shower.
Today will be 64 degrees with cloudy skies this morning turning partly cloudy in the afternoon. There is a chance of rain overnight. Winds will be 10 – 15 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, NY | 691 cfs | 49° |
| West Branch at Hale Eddy, NY | 810 cfs | 49° |
| East Branch at Harvard, NY | 167 cfs | 54° |
| East Branch at Fishs Eddy, NY | 250 cfs | N/A |
| East Branch at Hancock, NY | 64° | |
| Mainstem at Lordville, NY | 966 cfs | 60° |
| Beaverkill at Cooks Falls, NY | 75 cfs | 61° |
| West Branch at 191 Bridge | 55° | |
| West Branch at Walton (Cannonsville inflow) | 74 cfs | 63° |
| Cannonsville Reservoir Release | 761 cfs | |
| Cannonsville Reservoir Capacity | 73.4% | |
| Pepacton Reservoir Capacity | 83.3% |
Delaware River Report: August 28, 2025
The release from Cannonsville is 611 cfs. The release has been dropped again. Luckily, the cooler weather is keeping the lower river temperatures in good shape. That will open up more water to fish where there is less algae. Your best bet for hatching is still later in the day. Nymphing can be productive earlier in the day or blind cast a larger fly in the riffles.
Today will be 74 degrees with a mix of sun and clouds. There is a chance of rain overnight. Winds will be 5 – 10 mph from the South.
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, NY | 566 cfs | 48° |
| West Branch at Hale Eddy, NY | 679 cfs | 49° |
| East Branch at Harvard, NY | 167 cfs | 52° |
| East Branch at Fishs Eddy, NY | 255 cfs | N/A |
| East Branch at Hancock, NY | 62° | |
| Mainstem at Lordville, NY | 1,170 cfs | 57° |
| Beaverkill at Cooks Falls, NY | 60 cfs | 66° |
| West Branch at 191 Bridge | 51° | |
| West Branch at Walton (Cannonsville inflow) | 82 cfs | 60° |
| Cannonsville Reservoir Release | 611 cfs | |
| Cannonsville Reservoir Capacity | 73.8% | |
| Pepacton Reservoir Capacity | 83.7% |
Delaware River Report: August 27, 2025
The release from Cannonsville is 797 cfs. It looks like the extra water is to keep the minimum flow at 1,750 cfs at Montague, NJ. The extra cold water release and the cool nights should help the water temps on the Upper Mainstem. We had a brief shower yesterday afternoon but not enough to bump the flows. Today looks like a good day to be on the water. It’s cool with decent cloud cover. Small olives, Cahills, and Isonychias are making up the bulk of the hatches. There are some Tricos and some river sections should see some white flies soon. We’re nymphing or swinging wet early and finding fish on top in the late afternoon / evening in to dark.
Today will be 68 degrees with considerable cloudiness. There is a slight chance of an afternoon shower. Winds 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, NY | 720 cfs | 48° |
| West Branch at Hale Eddy, NY | 861 cfs | 49° |
| East Branch at Harvard, NY | 167 cfs | 54° |
| East Branch at Fishs Eddy, NY | 255 cfs | N/A |
| East Branch at Hancock, NY | 65° | |
| Mainstem at Lordville, NY | 1,070 cfs | 60° |
| Beaverkill at Cooks Falls, NY | 79 cfs | 63° |
| West Branch at 191 Bridge | 54° | |
| West Branch at Walton (Cannonsville inflow) | 88 cfs | 64° |
| Cannonsville Reservoir Release | 797 cfs | |
| Cannonsville Reservoir Capacity | 74.2% | |
| Pepacton Reservoir Capacity | 84% |
Delaware River Report: August 26, 2025
The release from Cannonsville is 687 cfs. Some of the runoff pushed through yesterday mid morning and the West Branch came up a bit with some color. That cleared up by late afternoon and we’re back to normal this morning. Olives, Isonychias, and Cahills are still making up the bulk of the bugs. There are some Tricos around too. Nymphing or swinging wets are the best bets when the sun is hitting the water but blind casting the riffles has also paid off. The cooler night time temps are beginning to help the other rivers but the lower East Branch and Beaverkill temps are still peaking over 70 degrees.
Today will be 70 degrees with sun and clouds mixed. There is a slight chance of an afternoon shower. Winds 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, NY | 626 cfs | 48° |
| West Branch at Hale Eddy, NY | 769 cfs | 49° |
| East Branch at Harvard, NY | 175 cfs | 56° |
| East Branch at Fishs Eddy, NY | 265 cfs | N/A |
| East Branch at Hancock, NY | 67° | |
| Mainstem at Lordville, NY | 1,140 cfs | 62° |
| Beaverkill at Cooks Falls, NY | 81 cfs | 64° |
| West Branch at 191 Bridge | 54° | |
| West Branch at Walton (Cannonsville inflow) | 94 cfs | 64° |
| Cannonsville Reservoir Release | 687 cfs | |
| Cannonsville Reservoir Capacity | 74.6% | |
| Pepacton Reservoir Capacity | 84.3% |
Delaware River Report: August 25, 2025
The release from Cannonsville is 698 cfs. Last nights rain was negligible and the runoff will be noticeable on the river. The West Branch remains at a good level for wading and floating. Olives are still making up the bulk of the dry flies but Isonychias and Cahills are bringing a lot of fish to the net. Some of the fish eating olives will eat the bigger bugs but they’ve also worked well blindcasted in the riffles. Nymphing or swinging wets are good bets but stick to the mid to lower West Branch for that. The increased released probably broke the algae loose in Deposit and it’ll take a day to settle. If they leave or drop the release tonight or tomorrow.
Today will be 74 degrees with some light rain this morning giving way to periods of sun in the afternoon. Winds 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, NY | 644 cfs | 48° |
| West Branch at Hale Eddy, NY | 855 cfs | 50° |
| East Branch at Harvard, NY | 185 cfs | 56° |
| East Branch at Fishs Eddy, NY | 284 cfs | N/A |
| East Branch at Hancock, NY | 67° | |
| Mainstem at Lordville, NY | 1,020 cfs | 61° |
| Beaverkill at Cooks Falls, NY | 84 cfs | 66° |
| West Branch at 191 Bridge | 54° | |
| West Branch at Walton (Cannonsville inflow) | 102 cfs | 66° |
| Cannonsville Reservoir Release | 698 cfs | |
| Cannonsville Reservoir Capacity | 76.1% | |
| Pepacton Reservoir Capacity | 85.4% |
