Delaware River at USCG Station Washington Street (IN MLLW)
Pennsylvania — Water Level & Flood Stage
Located in Philadelphia County, Pennsylvania on the Delaware River. Live water level data from USGS, updated every 15 minutes.
Current Water Level
Gage Height
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Streamflow
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Last Reading
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This is an NWS forecast point (LID: PHBP1). Live data may be limited. View on NWS AHPS →
Flood Stages
Major Flood
10.2 ft
Moderate Flood
9.2 ft
Minor Flood
8.2 ft
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
What Floods at Each Level
10.66 ft
(Mean Lower Low Water (MLLW)) The level reached on January 10, 2024.
10.62 ft
(MLLW) The level reached during Post Tropical Cyclone Sandy on October 30, 2012.
10.5 ft
In Philadelphia, Delaware Avenue from Penn Street to Washington Avenue is closed due to flooding. The I-95 off ramp to Washington Avenue is also closed. Eastbound Race Street from 2nd Street to Delaware Avenue floods and is closed. Eastbound Spring Garden Street from Front Street to Delaware Avenue floods and is closed.
10.49 ft
(MLLW) The level reached on November 25, 1950.
10.46 ft
(MLLW) The level reached on April 17. 2011.
10.36 ft
(MLLW) The level reached on October 29, 2021.
10.35 ft
(MLLW) The level reached on December 21, 2012.
10.2 ft
(MLLW) MAJOR FLOODING. At this level, widespread roadway flooding begins near the river and its tidal tributaries in Philadelphia and in the New Jersey counties of Camden and Gloucester. Vulnerable homes and businesses may be damaged as water levels rise further above this threshold. Numerous roads become impassable and some neighborhoods may be isolated. The flood waters become a danger to anyone who attempts to cross on foot or in a vehicle.
9.2 ft
(MLLW) MODERATE FLOODING. At this level, additional roadways near the river and its tidal tributaries in Philadelphia and in the New Jersey counties of Camden and Gloucester begin to flood. Lives may be at risk when people put themselves in harm's way. Some damage to vulnerable structures may begin to occur. COASTAL FLOOD WARNING LEVEL.
9 ft
(MLLW) Flooding begins along Columbus Boulevard in Philadelphia near the Ben Franklin Bridge. Generally, it is not a case of the river spilling over onto the roadway. The flooding problems tend to occur when the river is high and water begins to backup into the storm drains.
8.8 ft
(MLLW) Flooding begins on North Park Drive in Pennsauken NJ. Water backs up into Cooper River Lake in Camden County NJ. Flooding begins on South Park Drive in Collingswood and Haddon Township NJ. Flooding begins along Woodbury Creek in Woodbury NJ.
8.6 ft
(MLLW) Flooding begins along the Little Timber Creek between Gloucester City and Brooklawn NJ and around the Brooklawn Circle. Flooding begins along Timber Avenue, Edgewater Avenue and NJ Route 47 in Westville NJ. Flooding begins along Woodbury Creek and Hessian Run in West Deptford Township NJ, affecting Crown Point Road. Flooding begins along River Road Drive in West Deptford Township NJ.
8.5 ft
(MLLW) COASTAL FLOOD ADVISORY LEVEL.
8.4 ft
(MLLW) Flooding begins at the east end of Linden Avenue in Northeast Philadelphia. Flooding begins at the former Navy Shipyard in Philadelphia from both the Delaware River and the Schuylkill River. Flooding begins along Admiral Wilson Boulevard (US Route 30) and Baird Avenue in Camden NJ as the Cooper River overflows.
8.2 ft
(MLLW) MINOR FLOODING.
Impact statements from the National Weather Service, describing what typically happens at each water level.
7-Day Water Level Chart
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Historic Crests
| Date | Stage | Flow |
|---|---|---|
| Jan 9, 2024 | 10.66 ft | — |
| Jan 9, 2024 | 10.66 ft | — |
| Oct 30, 2012 | 10.62 ft | — |
| Oct 30, 2012 | 10.62 ft | — |
| Nov 24, 1950 | 10.49 ft | -9,999 cfs |
About This Gauge
NWS LID
PHBP1
River
Delaware River
County
Philadelphia, PA
Coordinates
39.9333°N, 75.1417°W
Get Flood Alerts for Delaware River
StormCast monitors this gauge and sends a push notification to your phone when the water level crosses into a new flood category — even at 3 AM.
Frequently Asked Questions
What is the current water level of Delaware River at USCG Station Washington Street (IN MLLW)?
The Delaware River at USCG Station Washington Street (IN MLLW) gauge is maintained by USGS and reports water levels every 15 minutes. Visit this page to see the latest reading updated live, or download StormCast to get push alerts when levels rise.
What is flood stage for Delaware River at USCG Station Washington Street (IN MLLW)?
The NWS-defined flood stage for Delaware River at USCG Station Washington Street (IN MLLW) is 8.2 feet. Action stage begins at N/A feet. Moderate flooding starts at 9.2 feet, and major flooding at 10.2 feet.
How do I get alerts when Delaware River rises?
Download StormCast free on Google Play, go to River Gauges, and add Delaware River at USCG Station Washington Street (IN MLLW) to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category — even when your screen is off.
Where is the Delaware River at USCG Station Washington Street (IN MLLW) gauge located?
The gauge is located in Philadelphia County, Pennsylvania at coordinates 39.9333°N, 75.1417°W. Data is provided by the U.S. Geological Survey and the National Weather Service.
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Source & Notes
Data provided by: NOAA National Ocean Service
- <head> <meta charset="utf-8"> <style type="text/css"> .style1 {background-color: #FFFF00;} </style> </head> Please refer to our <a href="http://forecast.weather.gov/product.php?site=NWS&issuedby=PHI&product=CFW&format=CI&version=1&glossary=0"> <span class="style1">Coastal Hazard Message</span></a> for specific information regarding Coastal Flood Watches, Warnings and Advisories. Flood impacts are based on long-term averages. Actual impacts from any tidal flooding event may vary due to factors such as rainfall, wave action, and the number of tide cycles during which there is an onshore flow. During tropical cyclones, please refer <span class="style1"> <a href="https://forecast.weather.gov/product.php?site=NWS&issuedby=PHI&product=TCV&format=CI&version=1&glossary=1">here</a></span> for additional storm surge information.
- <style type="text/css">.style1 { background-color: #FFFF00;}</style> During a Tropical Storm or Hurricane Watch or Warning, inundation mapping provided by the <a href="http://www.nhc.noaa.gov/"><span class="style1">National Hurricane Center</span> </a>reflects a reasonable worst case scenario. The experimental forecast above is the total water forecast that is expected to occur.