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SwedenRaritan River at Manville NJ water level
River gauge, Raritan River, New Jersey, United States
Right now
Below flood stage
Water level
- Flow
- 318 cfs
- Water temperature
- 56 °F
History
The forecast expects the river to fall to 4.20 ft by Tuesday, October 20 at 02:00 PM. Issued Monday, October 19 at 10:26 AM by NOAA National Weather Service.
What this means
The Raritan River at Manville NJ is at 4.27 ft, in the normal range.
It is 9.73 ft below the flood stage of 14.00 ft.
It has dropped 0.09 ft over the past 24 hours. The forecast expects the river to fall to 4.20 ft by Tuesday, October 20 at 02:00 PM. In the last month it has stayed between 4.26 ft and 4.52 ft.
The water temperature at the gauge is 56 °F.
Judged against the official flood stage for this gauge. How to read levels
Key numbers
- Highest on record
- 27.66 ftSeptember 2, 2021
- Forecast peak
- 4.30 ftMonday, October 19 at 02:00 PM
Floating and fishing near Raritan River at Manville NJ
Normal flows mean predictable rapids and good access at most put-ins.
Flood stage here is 14.00 ft, 9.73 ft above the current reading. Beyond it, the National Weather Service also defines moderate and major flood stages.
What happens at each level
- 20.00 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.
- 19.00 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.
- 18.00 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.
- 17.00 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.
- 16.00 ft
- Lincoln Avenue in the Lost Valley section of Manville floods.
- 15.00 ft
- Dukes Parkway begins to flood in Hillsborough.
- 13.00 ft
- Southside Avenue in Somerville floods.
- 12.00 ft
- Cautionary/Action stage is reached. Roads and trails flood within Dukes Park.
- 11.00 ft
- At this level, inundation begins in Dukes Park in Manville.
- 4.27 ft
- Right now
Impact statements from the U.S. National Weather Service.
Highest crests on record
Chance of at least minor flooding in October to December: 14 %.
| Rank | Level | Date |
|---|---|---|
| 1 | 27.66 ft | September 2, 2021 |
| 2 | 27.10 ft | September 17, 1999 |
| 3 | 26.24 ft | August 28, 2011 |
| 4 | 23.80 ft | August 28, 1971 |
| 5 | 22.41 ft | October 20, 1996 |
| 6 | 22.30 ft | April 16, 2007 |
| 7 | 21.80 ft | August 19, 1955 |
| 8 | 21.57 ft | March 14, 2010 |
| 9 | 20.42 ft | September 22, 1938 |
| 10 | 20.04 ft | January 10, 2024 |
Weather at the gauge
The forecast is not available right now.
Map
Other gauges on the Raritan River
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Raritan River below Calco Dam at Bound Brook NJRiver gauge, Raritan River | 17.34 ft | Below flood stage | −0.13 ft | 1.8 mi |
Nearby gauges
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Millstone River at Weston NJRiver gauge, Millstone River | 1.90 ft | Below flood stage | −0.10 ft | 1.8 mi |
| Middle Brook at Bound Brook NJRiver gauge, Middle Brook | 4.10 ft | Below flood stage | ±0 | 1.8 mi |
| Millstone River at Millstone NJRiver gauge, Millstone River | 1.25 ft | Below flood stage | −0.12 ft | 3.7 mi |
| West Branch Middle Brook near Martinsville NJRiver gauge, West Branch Middle Brook | 2.02 ft | Below flood stage | ±0 | 3.9 mi |
| Royce Brook at Hamilton Road near Manville NJRiver gauge, Royce Brook | 7.0 cfs | Very high | −0.4 cfs | 4.0 mi |
| Bound Brook at Middlesex NJRiver gauge, Bound Brook | 1.71 ft | Below flood stage | +0.01 ft | 4.4 mi |
| North Branch Raritan River near Raritan NJRiver gauge, North Branch Raritan River | 2.84 ft | Below flood stage | −0.02 ft | 5.2 mi |
| North Branch Raritan River at South Branch NJRiver gauge, North Branch Raritan River | 1.58 ft | Below flood stage | −0.06 ft | 5.5 mi |
Questions and answers
What is flood stage for the Raritan River at Manville NJ?
The official flood stage is 14.00 ft. The level is currently 9.73 ft below it.
Is gage height the same as water depth?
No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.
What is the water level of Raritan River at Manville NJ today?
On Oct 19, 2026, 05:15 PM EDT, the water level was 4.27 ft. Down 0.09 ft over the last 24 hours.
Is Raritan River at Manville NJ rising or falling?
Down 0.09 ft over the last 24 hours.
Is the level of Raritan River at Manville NJ normal?
Below flood stage. Judged against the official flood stage for this gauge.
What is the highest water level ever recorded at Raritan River at Manville NJ?
The highest level on record is 27.66 ft on September 2, 2021.
Is Raritan River at Manville NJ expected to rise?
The forecast expects the river to fall to 4.20 ft by Tuesday, October 20 at 02:00 PM.
For specialists
Station codes, datum, parameters, data quality and downloads
- Operator
- U.S. Geological Survey
- Station code
usgs:01400500(Agency page)- Coordinates
40.55556, -74.58278(WGS84)- Vertical datum
- NGVD29
- Update interval
- every 15 minutes
- Licence
- Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision
Published series
| Parameter | Last value | Time (UTC) | Quality |
|---|---|---|---|
| Water level | 4.27 ft | 2026-10-19 21:15 | Provisional |
| Flow | 318 cfs | 2026-10-19 21:15 | Provisional |
| Water temperature | 56 °F | 2026-10-19 21:15 | Provisional |
Download
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How to cite
U.S. Geological Survey: Raritan River at Manville NJ (usgs:01400500). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/new-jersey/raritan-river-at-manville-nj
How we check values
Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.
Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer