USGS stream gauge 01403060 · New Jersey

Raritan River below Calco Dam at Bound Brook, NJ

As of Oct 28, 2026, 10:15 AM EDT, this gauge read a gage height of 16.89 ft and a flow of 239 cfs. Over the past 7 days the water level fell 0.17 ft. Data from the USGS.

Updated Oct 28, 2026, 11:28 AM EDT (USGS Water Data snapshot)

Gage height

16.89 ft

7-day range 16.86–17.08 ft

Discharge

239cfs

7-day range 228–318 cfs

Latest reading

1 hr ago

Oct 28, 2026, 10:15 AM EDT

Readings are provisional USGS data and may be revised. Rivers can rise fast after rain upstream. For flood warnings, check weather.gov and follow local authorities.

Gage height, past 7 days

16.8416.9116.9717.0317.10Oct 21Oct 22Oct 23Oct 24Oct 25Oct 26Oct 27
Gage height (ft), hourly, past 7 days. Low 16.86 · High 17.08.

Discharge, past 7 days

221247273299325Oct 21Oct 22Oct 23Oct 24Oct 25Oct 26Oct 27
Discharge (cfs), hourly, past 7 days. Low 228 · High 318.

Chart dates are in New Jersey local time (America/New York).

Reading this gauge

Gage height is the water surface level above this station's own reference point, so 16.89 ft is not the river depth and cannot be compared with other gauges. Discharge, the volume of water flowing past each second, is the better number for comparing conditions over time and between rivers.

Station details
USGS site number01403060
Official nameRaritan River below Calco Dam at Bound Brook NJ
StateNew Jersey
Drainage area785 sq mi
Gage datum elevation-1.1 ft above sea level
Coordinates40.5511° N, 74.5483° W

Source: USGS Water Data for the Nation, site 01403060. Parameters 00065 (gage height) and 00060 (discharge).

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