Major Flood
7 ft
Current Water Level
Gage Height
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Streamflow
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Last Reading
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FLOOD STAGES
Know the flood categories.
Flood stages defined by the National Weather Service. Gage height data from USGS Water Resources.
Moderate Flood
6 ft
Minor Flood
4.5 ft
Action Stage
3.5 ft
What Floods at Each Level
10 ft
Main Street businesses in Denville experience several feet of water.
9 ft
Businesses on Main Street in Denville begin to flood. Sections of Boonton (municipality) begin to flood.
8 ft
Interstate Route 80 in Denville floods. Portions of Dover Township are under several feet of water.
7 ft
Park's Lake area in Denville is flooded. Residents near Savage Road in Denville take on water. Residential areas in Dover Township adjacent to the river experience significant flooding.
6 ft
Main Street in Rockaway is flooded. Jackson Avenue in Rockaway is flooded. Water backs up and comes through the sewer system. Main Street in Denville begins to flood. Gardner Park in Denville experiences significant flooding. Football and baseball fields are submerged in several feet of water. Portions of Boonton Township begin to flood.
5.5 ft
The main parking lot at St. Clare's Hospital begins to flood.
5 ft
Savage Road and other roads around Gardner Park in Denville flood.
3.5 ft
The Rockaway River leaves its banks and floods adjacent parks and trails in Denville including Gardner park.
2 ft
The Rockaway River leaves its banks and begins to flood the river parking lot at St. Clare's Hospital.
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 |
|---|---|---|
| Dec 18, 2023 | 4.71 ft | 4,424 cfs |
| Jan 10, 2024 | 4.67 ft | 4,362 cfs |
| May 1, 2014 | 3.7 ft | 2,960 cfs |
About This Gauge
Get Flood Alerts for Rockaway 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 Rockaway River at Boonton above reservoir?
The Rockaway River at Boonton above reservoir gauge is maintained by USGS (site 01380450) 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 Rockaway River at Boonton above reservoir?
The NWS-defined flood stage for Rockaway River at Boonton above reservoir is 4.5 feet. Action stage begins at 3.5 feet. Moderate flooding starts at 6 feet, and major flooding at 7 feet.
How do I get alerts when Rockaway River rises?
Download StormCast free on Google Play, go to River Gauges, and add Rockaway River at Boonton above reservoir to your watchlist. StormCast will send a push notification to your phone whenever the water level crosses into a new NWS flood category.
Where is the Rockaway River at Boonton above reservoir gauge located?
The gauge is located in Morris County, New Jersey at coordinates 40.9075°N, 74.4192°W. USGS site number: 01380450. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Rockaway River
On This River
Downstream: Rockaway River at Boonton
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey