River stage
Chatham, Passaic River
- River level
- 4.42 ft
- Status
- Below flood stage
- 7-day change
- +0.88 ft
- Recent high
- 4.58 ft
- Recent low
- 3.22 ft
Last reported 2026-10-14 | NWS CAMN4
- 30-day change
- +0.38 ft
- Average
- 3.71 ft
- Readings
- 122
- Data span
- 122 days
- Record crest
- 9.36 ft
In brief
The Passaic River at Chatham, NJ read 4.42 ft on Oct 14, 2026, 1.08 ft below action stage. That is 0.38 ft higher than 30 days earlier.
Source: National Weather Service gauge CAMN4
River level timeline
Stage threshold profile
Highest crests on record
| Rank | Crest | Date |
|---|---|---|
| 1 | 9.36 ft | 1973-08-02 |
| 2 | 8.41 ft | 2021-09-02 |
| 3 | 8.30 ft | 1905-01-09 |
| 4 | 8.16 ft | 1971-08-28 |
| 5 | 8.14 ft | 1975-09-27 |
| 6 | 8.00 ft | 1907-03-18 |
| 7 | 7.97 ft | 1975-09-26 |
| 8 | 7.91 ft | 2010-03-15 |
Flood crests recorded at this gauge by the National Weather Service.
What happens at each level
- 5.50 ft
Open areas adjacent to the Passaic River flood in New Providence, Chatham Township, and Berkley Heights.
- 6.00 ft
Portions of the Shepard Kolluck Park in Chatham floods. River Road by Henry Drive is subject to closures.
- 6.50 ft
The Central and Bridge Avenue bridges in Chatham Township are subject to closures. Edgewood Road is closed.
- 8.00 ft
Businesses along John F. Kennedy Parkway, west of the Morris Turnpike, begin to flood.
- 9.00 ft
Business parking lots between Chatham Road and the Passaic River flood.
- 10.00 ft
Charwood and Brook Roads begin to flood. Passaic Street begins to flood near the intersection of Osborne Avenue. Edward Court begins to flood.
- 11.00 ft
Flooding begins between University Avenue and Route 24, north of Main Street.
Written by the local National Weather Service forecast office for this exact gauge.
Frequently asked questions
Is the Passaic River flooding at Chatham?
No. The Passaic River at Chatham is at 4.42 ft, 1.08 ft below action stage.
What is the flood stage at Chatham?
The National Weather Service sets action stage 5.5 ft, minor flooding 6 ft, moderate flooding 8 ft and major flooding 10 ft.
What is the highest the Passaic River has been at Chatham?
The highest crest on record is 9.36 ft, on 1973-08-02.
Is the Passaic River high or low right now at Chatham?
At 4.42 ft it is higher than 98% of readings over the last 122 days.
Stage and flood information from the NOAA National Weather Service (gauge CAMN4); daily history from the U.S. Geological Survey (site 01379500). Last reading 2026-10-14. For flood safety decisions always follow official National Weather Service warnings.