Major Flood
11 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
10 ft
Minor Flood
8 ft
Action Stage
7 ft
What Floods at Each Level
12 ft
Riverview Terrace in Riverdale floods. Houses take on water.
11 ft
Main Street, Van Dam Avenue, and Hamilton Street in Bloomingdale flood. Houses on Garden Avenue in Riverdale begin to flood.
10 ft
Brandt Lane in Bloomingdale floods in several spots and becomes impassable.
9 ft
Additional businesses along Main Street in Bloomingdale take on water.
8 ft
Business along Main Street in Bloomingdale, closest to the river, begin to flood. Brandt Lane in Bloomingdale begins to flood.
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 |
|---|---|---|
| Apr 4, 1984 | 13.6 ft | 8,000 cfs |
| Aug 28, 2011 | 12.57 ft | 6,900 cfs |
| Dec 18, 2023 | 9.74 ft | — |
About This Gauge
USGS Site
NWS LID
RDLN4
River
Pequannock River
County
Morris, NJ
Coordinates
40.9986°N, 74.2981°W
Get Flood Alerts for Pequannock 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 Pequannock River at Riverdale?
The Pequannock River at Riverdale gauge is maintained by USGS (site 01382800) 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 Pequannock River at Riverdale?
The NWS-defined flood stage for Pequannock River at Riverdale is 8 feet. Action stage begins at 7 feet. Moderate flooding starts at 10 feet, and major flooding at 11 feet.
How do I get alerts when Pequannock River rises?
Download StormCast free on Google Play, go to River Gauges, and add Pequannock River at Riverdale 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 Pequannock River at Riverdale gauge located?
The gauge is located in Morris County, New Jersey at coordinates 40.9986°N, 74.2981°W. USGS site number: 01382800. Data is provided by the U.S. Geological Survey and the National Weather Service.
More Gauges on Pequannock River
On This River
Upstream: Pequannock River at Macopin
More Resources
Source & Notes
Data provided by: US Geological Survey, Observations courtesy of U.S. Geological Survey
- <span style="background-color: #ffff00;"><a style="background-color: #ffff00;" href="https://water.weather.gov/ahps2/hydrograph.php?wfo=phi&gage=mcpn4"><span style="font-weight: 400;">Forecast </span></a></span><span style="font-weight: 400;">and </span><span style="background-color: #ffff00;"><a style="background-color: #ffff00;" href="https://water.weather.gov/ahps2/inundation/index.php?gage=mcpn4"><span style="font-weight: 400;">inundation mapping</span></a></span><span style="font-weight: 400;"> services for the Riverdale gage area are provided by the Macopin gage information.</span>