Is the Raritan River flooding?

New Jersey · 2 gauges · New Jersey river levels

The Raritan River is tracked by 2 USGS streamgauges in New Jersey. This page compares each gauge’s live water level against its official National Weather Service flood stage, refreshed every 15 minutes, so you can tell whether the Raritan River is running normal, rising toward flood stage, or already flooding. 2 of 2 gauges have both a usable water-level reading and a published minor flood stage. Gauges without a published flood stage show water level and flow only. For nearby rivers, see all New Jersey river levels.

data refreshed 8 min ago

Readings may be delayed; check each observation time below. This gauge summary does not rule out flooding on unmonitored stretches or nearby streets.

River facts

The longest-running gauge on this river is Raritan River below Calco Dam at Bound Brook NJ. The highest level ever recorded there was 42.13 ft on 17 September 1999, carrying 82,900 cfs. Peak records there go back to 1882 (94 annual peaks). It is currently at 16.75 ft, 25.4 ft below that record.

Drains 785 sq mi · gauge elevation -1 ft · source: USGS peak-flow record

GaugeStatusStageFlood stageUpdated
Raritan River at Manville NJNo flooding4.11 ft14 ft
Raritan River below Calco Dam at Bound Brook NJNo flooding16.75 ft28 ft
Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.