Passaic River at Chatham
Flood levels
Official flood levels at this gauge: action stage begins at 5.5 ft; minor flooding begins at 6.0 ft; moderate flooding begins at 8.0 ft; major flooding begins at 10.0 ft.
| Action stage | 5.5 ft |
|---|---|
| Minor flooding | 6.0 ft |
| Moderate flooding | 8.0 ft |
| Major flooding | 10.0 ft |
Highest recorded crests
- 9.4 ft on Aug 2, 1973 (historic crest)
- 8.4 ft on Sep 2, 2021 (historic crest)
- 8.3 ft on Jan 9, 1905 (historic crest)
- 8.2 ft on Aug 28, 1971 (historic crest)
What the water does
National Weather Service impact statements for this gauge, in the Weather Service's own words.
| 5.5 ft | Open areas adjacent to the Passaic River flood in New Providence, Chatham Township, and Berkley Heights. |
|---|---|
| 6.0 ft | Portions of the Shepard Kolluck Park in Chatham floods. River Road by Henry Drive is subject to closures. |
| 6.5 ft | The Central and Bridge Avenue bridges in Chatham Township are subject to closures. Edgewood Road is closed. |
| 8.0 ft | Businesses along John F. Kennedy Parkway, west of the Morris Turnpike, begin to flood. |
| 9.0 ft | Business parking lots between Chatham Road and the Passaic River flood. |
| 10.0 ft | Charwood and Brook Roads begin to flood. Passaic Street begins to flood near the intersection of Osborne Avenue. Edward Court begins to flood. |
| 11.0 ft | Flooding begins between University Avenue and Route 24, north of Main Street. |
Forecast office: NWS Mount Holly · River Forecast Center: Middle Atlantic River Forecast Center.
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Nearby stations and gauges
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- Whippany River at Morristown NWS gauge · 6.6 mi
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- Passaic River near Millington NWS gauge · 8.0 mi