Office of the Delaware River Master
Current and Archived Data
Cannonsville Reservoir
Pepacton Reservoir
Neversink Reservoir
Summary River Data
Data presented on the Office of the Delaware River Master website are reviewed periodically to ensure accuracy. The data are considered provisional, however, until they are published in the annual report of the River Master. Some data is collected from sources outside the USGS and Office of the Delaware River Master.
Data users are advised to carefully consider the provisional nature of the information before using it for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Information on the accuracy and appropriate uses of the data can be obtained by contacting the Deputy Delaware River Master.
Thermal Forecasts
NEW YORK DIVERSIONS
Last 30 days.
The Decree authorizes the City of New York to divert water from the Delaware River watershed. At no time during any twelve-month period, commencing June 1, shall the aggregate total quantity diverted, divided by the number of days elapsed since the preceding May 31, exceed the applicable permitted rate of diversion.
NEW JERSEY DIVERSIONS
Last 30 days.
The Decree authorizes the State of New Jersey to divert outside the Delaware River watershed. The diversion is not to exceed 100 m. g. d. as a monthly average, with the diversion on any day not to exceed 120 million gallons.
RESERVOIR OPERATION DATA
Millions of gallons -- 24 hour period, local time
| Date | Discharge to river | Diversions to New York City water supply | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Pepacton | Cannonsville | Neversink | Pepacton | Cannonsville | Neversink | Average | ||||
| Spill | Release | Spill | Release | Spill | Release | Beginning | Beginning | Beginning | 1-June to date | |
| 2024-11-30 | 0 | 32 | 0 | 39 | 0 | 23 | 0 | 201 | 0 | 486 |
| 2024-12-01 | 0 | 32 | 0 | 39 | 0 | 23 | 0 | 202 | 0 | 485 |
| 2024-12-02 | 0 | 32 | 0 | 39 | 0 | 23 | 0 | 202 | 0 | 482 |
| 2024-12-03 | 0 | 32 | 0 | 39 | 0 | 23 | 0 | 17 | 0 | 480 |
| 2024-12-04 | 0 | 32 | 0 | 39 | 0 | 23 | 0 | 0 | 0 | 477 |
| 2024-12-05 | 0 | 32 | 0 | 39 | 0 | 23 | 0 | 0 | 0 | 475 |
SEGREGATION OF FLOW, DELAWARE RIVER AT MONTAGUE AND PRECIPITATION IN UPPER DELAWARE RIVER BASIN
Discharge in cubic feet per second, local time routed to Montague. --, data not yet available.
| Date | Releases from NYC Reservoirs | Power Releases | Computed | Total | Precipitation (inches) | ||||
|---|---|---|---|---|---|---|---|---|---|
| Directed Release | Pepacton | Cannonsville | Neversink | Wallenpaupack | Rio Reservoir | Uncontrolled | Discharge | Daily | |
| 2024-12-01 | 0 | 50 | 60 | 35 | 0 | 137 | 3,997 | 4,280 | 0.00 |
| 2024-12-02 | 0 | 49 | 60 | 35 | 0 | 133 | 3,253 | 3,530 | 0.00 |
| 2024-12-03 | 0 | 50 | 60 | 35 | 0 | 124 | 2,741 | 3,010 | 0.01 |
| 2024-12-04 | 0 | 50 | 60 | 35 | 0 | 125 | 2,410 | 2,680 | 0.21 |
| 2024-12-05 | 0 | 50 | 60 | 36 | 0 | 134 | 2,221 | 2,500 | 0.06 |
| 2024-12-06 | 0 | 50 | 60 | 35 | 0 | 142 | 2,073 | 2,360 | 0.00 |
| 2024-12-07 | 0 | 50 | 60 | -- | 0 | 140 | -- | -- | 0.00 |
| 2024-12-08 | 0 | -- | -- | -- | -- | -- | -- | -- | 0.00 |
Download Current Data
Click on a button below to download a zip file of comma separated data.
Archived Data
Weekly Reservoir and Streamflow Data Archived by Month and Year
| 2024 | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct |
Weekly reservoir data below have been compiled into one file by year.
| 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 |
| 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 |
Archived OST Summary Data
| 2024 | Jan 15 | Feb 19 | Mar 17 | Apr 15 | May 15 | Jun 15 | Jul 16 | Aug 15 | Sep 17 | Oct 17 |
OST Archive Data below have been compiled into one file by year.
| 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | 2011 |
Monthly Hydrologic Conditions for the Upper Delaware River Basin
Files for monthly conditions have been compiled for each year.
| 2011 | 2010 | 2009 | 2008 | 2007 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 |