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Assunpink Creek below STP near Mercerville NJ water level

River gauge, Assunpink Creek, New Jersey, United States

Directions

Right now

Below flood stage

Water level

2.53ft Down 0.06 ft over the last 24 hours

5 10 15 Highest onrecord 15.82 ft Minor floodstage 9.50 ft

History

History
2.62.8ftOct 16Oct 17Oct 18Oct 20Oct 212.62.8ftOct 16Oct 18Oct 21
Water level Minor flood stage

What this means

The gauge at Assunpink Creek below STP near Mercerville NJ reads 2.53 ft, a normal level.

It is 6.97 ft below the flood stage of 9.50 ft.

The level is falling, down 0.06 ft over the past 24 hours. Over the past 30 days it has moved between 2.53 ft and 2.95 ft.

Fall is often low-water season on rivers, until steadier rain returns.

Judged against the official flood stage for this gauge. How to read levels

Key numbers

Highest on record
15.82 ftSeptember 2, 2021

What the stage means on the water

A normal level is usually prime time for floating and wade fishing, as long as the weather holds upstream.

The National Weather Service puts flood stage for this gauge at 9.50 ft, still 6.97 ft away.

What happens at each level

14.00 ft
Flooding expands across the above mentioned areas. Roads are barricaded and closed.
13.00 ft
Sweetbriar Avenue from Whitehead Road to Trinity Avenue is flooded and is subject to closures. Residential basements are flooded on Sweetbriar Avenue. The Whitehead Bridge connecting Hamilton and Lawrence is closed.
12.00 ft
Assunpink Boulevard from 1st to 5th Avenue is flooded and is subject to closures. Rutgers Avenue from Sweetbriar Avenue to Trinity Avenue is flooded and is subject to closures.
11.00 ft
Brown Avenue from Rutgers Avenue to Vetterlein Avenue is flooded and is subject to closures. Whitehead Road from 7th Avenue to Township Line is flooded and is subject to closures.
10.00 ft
Assunpink Boulevard floods. Carnegie Road floods. Rutgers Avenue from Amhurst Avenue to the dead end floods and is subject to closures.
8.50 ft
The Delaware and Raritan Canal State Park trail floods.
2.53 ft
Right now

Impact statements from the U.S. National Weather Service.

Highest crests on record

RankLevelDate
115.82 ftSeptember 2, 2021
214.29 ftMay 1, 2014
312.86 ftMay 27, 2018
412.31 ftNovember 25, 2018
511.72 ftDecember 18, 2023
611.04 ftJanuary 10, 2024
79.68 ftJuly 18, 2021

Weather at the gauge

No rain in the last 3 days.

21 Wed 64° 45° – Wind 13 mph
22 Thu 67° 41° – Wind 11 mph
23 Fri 60° 45° – Wind 10 mph
24 Sat 62° 42° – Wind 4 mph
25 Sun 64° 45° – Wind 5 mph
26 Mon 67° 47° – Wind 7 mph
27 Tue 71° 52° – Wind 7 mph

Forecast: Open-Meteo

Sunrise 07:17 AM Sunset 06:12 PM Daylight 10 hr, 55 min Waxing gibbous 75%

Map

Other gauges on Assunpink Creek

Gauge Level Compared with normal 24 hours Distance
Assunpink Creek near Clarksville NJRiver gauge, Assunpink Creek 4.02 ft Below flood stage −0.04 ft 3.3 mi
Assunpink Creek at Trenton NJRiver gauge, Assunpink Creek 3.01 ft Below flood stage −0.03 ft 2.0 mi

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Shabakunk C at Sylva Lake Dam at Ewingville NJRiver gauge, Shabakunk C 1.4 cfs Low ±0 2.9 mi
Delaware River at Trenton NJRiver gauge, Delaware River 8.93 ft Below flood stage −0.13 ft 3.2 mi
Delaware and Raritan Canal at Port Mercer NJCanal gauge, Delaware and Raritan Canal 127 cfs Normal ±0 4.5 mi
Stony Brook at Princeton NJRiver gauge, Stony Brook 1.71 ft Below flood stage −0.04 ft 6 mi
D&R Ca feeder US of gate at Washington Crossing NJRiver gauge, D&R Ca feeder US of gate 146 cfs Low +4.0 cfs 8 mi
Delaware River at Washington Crossing NJRiver gauge, Delaware River −0.96 ft Below flood stage −0.24 ft 8 mi
Crosswicks Creek at Extonville NJRiver gauge, Crosswicks Creek 2.92 ft Below flood stage −0.12 ft 10 mi
Neshaminy Creek near LanghorneRiver gauge, Neshaminy Creek 1.22 ft Below flood stage ±0 13 mi

Questions and answers

What is flood stage for Assunpink Creek below STP near Mercerville NJ?

The official flood stage is 9.50 ft. The level is currently 6.97 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 Assunpink Creek below STP near Mercerville NJ today?

On Oct 21, 2026, 02:30 AM EDT, the water level was 2.53 ft. Down 0.06 ft over the last 24 hours.

Is Assunpink Creek below STP near Mercerville NJ rising or falling?

Down 0.06 ft over the last 24 hours. Down 0.35 ft over the last 7 days.

Is the level of Assunpink Creek below STP near Mercerville NJ normal?

Below flood stage. Judged against the official flood stage for this gauge.

What is the highest water level ever recorded at Assunpink Creek below STP near Mercerville NJ?

The highest level on record is 15.82 ft on September 2, 2021.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
U.S. Geological Survey
Station code
usgs:01463882 (Agency page)
Coordinates
40.24750, -74.72778 (WGS84)
Vertical datum
NAVD88
Update interval
every 15 minutes
Licence
Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

ParameterLast valueTime (UTC)Quality
Water level 2.53 ft 2026-10-21 06:30 Provisional

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How to cite

U.S. Geological Survey: Assunpink Creek below STP near Mercerville NJ (usgs:01463882). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/new-jersey/assunpink-creek-below-stp-near-mercerville-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.