Office of the Delaware River Master
Thermal Release Request
NYSDEC is requesting a release from the 2017 FFMP Thermal Mitigation Bank due to the forecast of warm and sunny conditions. The daily high water temperature at Lordville, NY is projected to approach or exceed 75 degrees with the current conservation release from Cannonsville Reservoir.
NYSDEC requests an increased release from Cannonsville Reservoir in the form of a 10 hour +300 cfs pulse above the current Table 4G Level L2 release of 500 cfs.
There will be around 1450 cfs-days remaining in the bank after this evening’s release.
Cannonsville Reservoir Requested Ramping Schedule
August 11
| Time | Beginning Flow (cfs) |
Ending Flow (cfs) |
Loss/Gain (cfs) |
|---|---|---|---|
| 8:00 PM | 500 | 600 | +100 |
| 9:00 PM | 600 | 700 | +100 |
| 10:00 PM | 700 | 800 | +100 |
| The pulse is requested to begin with three steps up (+100 cfs each) at 8:00 PM, 9:00 PM, and 10:00 PM on Monday, August 11, 2025. A release of 800 cfs should be maintained from 10:00 PM until 8:00 AM. | |||
August 12
| Time | Beginning Flow (cfs) |
Ending Flow (cfs) |
Loss/Gain (cfs) |
|---|---|---|---|
| 8:00 AM | 800 | 700 | -100 |
| 9:00 AM | 700 | 600 | -100 |
| 10:00 AM | 600 | 500 | -100 |
| The pulse should be ended with three steps down (-100 cfs each) at 8:00 AM, 9:00 AM, and 10:00 AM on Tuesday, August 12, 2025. | |||
Requested By:
Brenan Tarrier
Professional Engineer 1, Division of Water
New York State Department of Environmental Conservation