Raritan River at Manville
Critical Stages
12' - Action
14' - Flood
17' - Moderate
20' - Major
Latest Observation
Updated: 9:15 AM EST 12/6/25
Status: No Flooding
Stage: 4.13 ft
Flow: 0.253 kcfs
Forecast
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 1 PM 12/6 | 4.2 | 0.29 |
| 7 PM 12/6 | 4.2 | 0.29 |
| 1 AM 12/7 | 4.2 | 0.29 |
| 7 AM 12/7 | 4.2 | 0.29 |
| 1 PM 12/7 | 4.2 | 0.29 |
| 7 PM 12/7 | 4.2 | 0.29 |
| 1 AM 12/8 | 4.2 | 0.29 |
| 7 AM 12/8 | 4.1 | 0.239 |
| Time | Stage (ft) | Flow (kcfs) |
|---|---|---|
| 9:15 AM 12/6 | 4.13 | 0.253 |
| 9:00 AM 12/6 | 4.13 | 0.253 |
| 8:45 AM 12/6 | 4.13 | 0.253 |
| 8:30 AM 12/6 | 4.13 | 0.253 |
| 8:15 AM 12/6 | 4.14 | 0.258 |
| 8:00 AM 12/6 | 4.14 | 0.258 |
| 7:45 AM 12/6 | 4.14 | 0.258 |
| 7:30 AM 12/6 | 4.14 | 0.258 |
| 7:15 AM 12/6 | 4.14 | 0.258 |
| 7:00 AM 12/6 | 4.14 | 0.258 |
| 6:45 AM 12/6 | 4.13 | 0.253 |
| 6:30 AM 12/6 | 4.14 | 0.258 |
| 6:15 AM 12/6 | 4.13 | 0.253 |
| 6:00 AM 12/6 | 4.11 | 0.244 |
| 5:45 AM 12/6 | 4.14 | 0.258 |
| 5:30 AM 12/6 | 4.14 | 0.258 |
| 5:15 AM 12/6 | 4.14 | 0.258 |
| 5:00 AM 12/6 | 4.14 | 0.258 |
| 4:45 AM 12/6 | 4.14 | 0.258 |
| 4:30 AM 12/6 | 4.14 | 0.258 |
| 4:15 AM 12/6 | 4.14 | 0.258 |
| 4:00 AM 12/6 | 4.13 | 0.253 |
| 3:45 AM 12/6 | 4.13 | 0.253 |
| 3:30 AM 12/6 | 4.14 | 0.258 |
| 3:15 AM 12/6 | 4.14 | 0.258 |
| 3:00 AM 12/6 | 4.14 | 0.258 |
| 2:45 AM 12/6 | 4.14 | 0.258 |
| 2:30 AM 12/6 | 4.14 | 0.258 |
| 2:15 AM 12/6 | 4.14 | 0.258 |
| 2:00 AM 12/6 | 4.14 | 0.258 |
20' -
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' -
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' -
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' -
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' -
Lincoln Avenue in the Lost Valley section of Manville floods.
15' -
Dukes Parkway begins to flood in Hillsborough.
13' -
Southside Avenue in Somerville floods.
12' -
Cautionary/Action stage is reached. Roads and trails flood within Dukes Park.
11' -
At this level, inundation begins in Dukes Park in Manville.
| Date | Stage (ft) |
|---|---|
| Sep 2, 2021 | 27.66 |
| Sep 17, 1999 | 27.1 |
| Aug 28, 2011 | 26.24 |
| Aug 28, 1971 | 23.8 |
| Oct 20, 1996 | 22.41 |
| Apr 16, 2007 | 22.3 |
| Aug 19, 1955 | 21.8 |
| Mar 14, 2010 | 21.57 |
| Sep 22, 1938 | 20.42 |
| Jan 10, 2024 | 20.04 |
| May 1, 2014 | 19.99 |
| Jul 7, 1984 | 19.95 |
| Aug 13, 1955 | 19.9 |
| Dec 19, 2023 | 19.84 |
| Jan 20, 1996 | 19.82 |
| Oct 15, 1955 | 19.6 |
| Sep 8, 2011 | 19.18 |
| Apr 16, 1983 | 18.39 |
| Jun 23, 1972 | 17.89 |
| Apr 5, 1984 | 17.5 |
Data provided by the National Weather Service.
