Raritan River at Manville
Flood levels
Official flood levels at this gauge: action stage begins at 12.0 ft; minor flooding begins at 14.0 ft; moderate flooding begins at 17.0 ft; major flooding begins at 20.0 ft.
| Action stage | 12.0 ft |
|---|---|
| Minor flooding | 14.0 ft |
| Moderate flooding | 17.0 ft |
| Major flooding | 20.0 ft |
Highest recorded crests
- 27.7 ft on Sep 2, 2021 (historic crest)
- 27.1 ft on Sep 17, 1999 (historic crest)
- 26.2 ft on Aug 28, 2011 (historic crest)
- 23.8 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.
| 11.0 ft | At this level, inundation begins in Dukes Park in Manville. |
|---|---|
| 12.0 ft | Cautionary/Action stage is reached. Roads and trails flood within Dukes Park. |
| 13.0 ft | Southside Avenue in Somerville floods. |
| 15.0 ft | Dukes Parkway begins to flood in Hillsborough. |
| 16.0 ft | Lincoln Avenue in the Lost Valley section of Manville floods. |
| 17.0 ft | Street and roadway flooding increases across the Manville area. The Van Veghten Bridge and Main Street in Manville are flooded as well as 5th Street in Somerville. The amount of flooding can vary from event to event and can be affected by the amount of water in the Millstone. |
| 18.0 ft | East Dukes Parkway and several bridges in Manville are flooded. Roads throughout the area are closed due to high water. The amount of flooding can vary from event to event and can be affected by the amount of water in the Millstone. |
| 19.0 ft | South Bridge Street in Somerville is closed. The amount of flooding can vary from event to event and can be affected by the amount of water in the Millstone. Old York Road and Robert Street floods. Old York Road and Park Drive floods. |
| 20.0 ft | Flooding becomes widespread across Manville. Flooding expands between Dukes Parkway and Brooks Blvd. The amount of flooding can vary from event to event and can be affected by the amount of water in the Millstone. |
Forecast office: NWS Mount Holly · River Forecast Center: Middle Atlantic River Forecast Center.
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Nearby stations and gauges
- Millstone River at Weston NWS gauge · 1.8 mi
- Raritan River at Bound Brook NWS gauge · 1.8 mi
- Middle Brook at Bound Brook NWS gauge · 1.9 mi
- Peters Brook at Somerville NWS gauge · 2.2 mi
- Millstone River at Millstone NWS gauge · 3.7 mi
- West Branch Middle Brook near Martinsville NWS gauge · 3.9 mi