North Branch Raritan River at South Branch
Flood levels
Official flood levels at this gauge: action stage begins at 7.0 ft; minor flooding begins at 8.0 ft; moderate flooding begins at 9.0 ft; major flooding begins at 11.0 ft.
| Action stage | 7.0 ft |
|---|---|
| Minor flooding | 8.0 ft |
| Moderate flooding | 9.0 ft |
| Major flooding | 11.0 ft |
Highest recorded crests
- 20.3 ft on Sep 2, 2021 (historic crest)
- 19.0 ft on Sep 16, 1999 (historic crest)
- 18.0 ft on Feb 6, 1896 (historic crest)
- 17.7 ft on Aug 28, 2011 (historic crest)
What the water does
National Weather Service impact statements for this gauge, in the Weather Service's own words.
| 7.0 ft | The river leaves it's banks and floods surrounding open land. |
|---|---|
| 8.0 ft | Flooding begins on Old York Road on the west side of the bridge. The road is closed. |
| 9.0 ft | Flooding increases on Old York Road. The road remains closed. |
| 11.0 ft | Flooding increases impacting roadways and structures along Milltown Road, North Branch River Road, and Old York Road toward Raritan. |
Forecast office: NWS Mount Holly · River Forecast Center: Middle Atlantic River Forecast Center.
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Nearby stations and gauges
- South Branch Raritan River at South Branch NWS gauge · 0.8 mi
- North Branch Raritan River near Raritan NWS gauge · 1.1 mi
- North Branch Raritan River at North Branch Village NWS gauge · 3.1 mi
- Peters Brook at Somerville NWS gauge · 4.0 mi
- South Branch Raritan River at Neshanic Station NWS gauge · 4.7 mi
- Royce Brook at Hamilton Road NWS gauge · 4.9 mi