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South Nation River near Plantagenet Springs water level

River gauge, South Nation River, Ontario, Canada

Directions

Right now

Very high for mid-October

Water level

1.11m Down 0.20 m over the last 24 hours

Flow
57.6 m³/s
0.8 0.9 1.0 1.1

History

History
1.01.52.0mOct 14Oct 15Oct 17Oct 19Oct 201.01.52.0mOct 14Oct 17Oct 20
1.01.52.0mSep 21Sep 28Oct 5Oct 13Oct 201.01.52.0mSep 21Oct 5Oct 20
1234mOct 2025Jan 2026Apr 2026Jul 2026Oct 20261234mOct 2025Apr 2026Oct 2026
1234mJanMarMayJulSepNov20261234mJanAprJulOct2026

20252026

Water level Normal range (10–90 %)

What this means

The gauge at South Nation River near Plantagenet Springs shows 1.11 m, well above normal for mid-October.

That puts it 0.32 m above the median of 0.79 m for mid-October, based on 21 years of readings. A year ago it stood at 0.69 m (+0.42 m).

The level is falling, down 0.20 m over the past 24 hours. Over the past 30 days it has moved between 0.72 m and 2.14 m.

That stands out in fall, when many rivers are usually near their lowest.

Compared with 21 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
0.79 m0.32 m above the median for this date
Normal for this date
0.71 m – 1.07 m8 years in 10 fall in this range (21 years of records)
Same day last year
0.69 m+0.42 m
Lowest and highest in 30 days
0.72 m – 2.14 m
Lowest and highest in 12 months
0.69 m – 2.01 m

High water at South Nation River near Plantagenet Springs

Official flood alerts and warnings come from the provincial river forecast centre. They cover areas, not single gauges, so a warning can be in force before this reading looks dramatic.

Keep children and dogs well back from the edge, and stay off flooded footpaths and towpaths.

About the South Nation River

South Nation River

The South Nation River is a river in Eastern Ontario, Canada. It springs from forests and marshes located north of Brockville, and it flows 175 kilometres (109 mi) northeast to empty into the Ottawa River north of Plantagenet. Its watershed covers 3,900 square kilometres (1,500 sq mi).

Read more on Wikipedia

Text and image from Wikipedia and Wikimedia Commons, licensed under CC BY-SA.

Weather at the gauge

No rain in the last 3 days.

20 Tue 17° 3° – Wind 12 km/h
21 Wed 13° 3° – Wind 12 km/h
22 Thu 14° 3° – Wind 18 km/h
23 Fri 10° 1° – Wind 8 km/h
24 Sat 13° 1° – Wind 10 km/h
25 Sun 16° 3° – Wind 22 km/h
26 Mon 12° 7° – Wind 14 km/h

Forecast: Open-Meteo

Sunrise 07:23 AM Sunset 06:07 PM Daylight 10 hr, 44 min Waxing gibbous 72%

Map

Other gauges on the South Nation River

Gauge Level Compared with normal 24 hours Distance
South Nation River at ChestervilleRiver gauge, South Nation River 6.36 m Very high +0.02 m 50 km
South Nation River at SpencervilleRiver gauge, South Nation River 11.10 m High −0.03 m 87 km

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Bear Brook near BourgetRiver gauge, Bear Brook 8.05 m High −0.21 m 17 km
Becketts Creek near Cumberland EstatesRiver gauge, Becketts Creek 6.72 m Normal −0.03 m 29 km
Riviere Delisle near AlexandriaRiver gauge, Riviere Delisle 1.70 m High −0.02 m 34 km
Garry River near AlexandriaRiver gauge, Garry River 81.50 m Normal −0.02 m 35 km
Riviere Delisle near Glen NormanRiver gauge, Riviere Delisle 1.60 m High −0.06 m 37 km
Payne River near BerwickRiver gauge, Payne River 6.27 m Very high −0.04 m 38 km
Castor River at RussellRiver gauge, Castor River 3.30 m Very high −0.05 m 40 km
Rigaud River near St. EugeneRiver gauge, Rigaud River 1.74 m Normal −0.06 m 42 km

Questions and answers

How does the South Nation River near Plantagenet Springs compare with last year?

It is 0.42 m higher than on the same day last year, when the reading was 0.69 m.

What is a normal level for the South Nation River near Plantagenet Springs in mid-October?

The median for mid-October is 0.79 m. In 8 years out of 10 the reading falls between 0.71 m and 1.07 m, based on 21 years of records.

Is the river level the same as the depth of the water?

No. The reading is measured from a fixed zero mark at the gauge, so 1.11 m on the gauge does not mean the water is that deep.

What is the water level of South Nation River near Plantagenet Springs today?

On Oct 20, 2026, 05:50 PM EDT, the water level was 1.11 m. Down 0.20 m over the last 24 hours.

Is South Nation River near Plantagenet Springs rising or falling?

Down 0.20 m over the last 24 hours. Up 0.32 m over the last 7 days.

Is the level of South Nation River near Plantagenet Springs normal?

Very high for mid-October. Compared with 21 years of daily readings for this time of year.

How often is this data updated?

Environment and Climate Change Canada – Water Survey of Canada publishes a new reading every hour. This page refreshes within minutes of each update.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
Environment and Climate Change Canada – Water Survey of Canada
Station code
eccc:02LB005 (Agency page)
Coordinates
45.51706, -74.97822 (WGS84)
Vertical datum
station datum (assumed datum)
Update interval
every hour
Licence
Open Government Licence – Canada. Contains information licensed under the Open Government Licence – Canada

Published series

ParameterLast valueTime (UTC)Quality
Water level 1.11 m 2026-10-20 21:50 Provisional
Flow 57.6 m³/s 2026-10-20 21:50 Provisional

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How to cite

Environment and Climate Change Canada – Water Survey of Canada: South Nation River near Plantagenet Springs (eccc:02LB005). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/canada/ontario/south-nation-river-near-plantagenet-springs

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.