South Nation River at Spencerville water level

Name: South Nation River at Spencerville water level (Environment and Climate Change Canada – Water Survey of Canada)
Creator: Environment and Climate Change Canada – Water Survey of Canada
License: https://open.canada.ca/en/open-government-licence-canada

River gauge, South Nation River, Ontario, Canada

Directions

Very high for mid-October

Water level

11.14m Down 0.01 m over the last 24 hours

Measured Oct 19, 2026, 07:50 AM EDT (1 hour ago)

Flow: 3.83 m³/s

History

7 days 30 days 1 year Years compared

20252026

Water level Normal range (10–90 %)

What this means

The gauge at South Nation River at Spencerville shows 11.14 m, well above normal for mid-October.

The median for mid-October is 10.93 m, based on 20 years of readings, so the water level is 0.21 m above typical. On the same day last year the reading was 10.76 m, a difference of +0.38 m.

The level is falling, down 0.01 m over the past 24 hours. Over the past 30 days it has moved between 10.89 m and 11.16 m.

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

Compared with 20 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 10.93 m0.21 m above the median for this date
Normal for this date: 10.80 m – 11.10 m8 years in 10 fall in this range (20 years of records)
Same day last year: 10.76 m+0.38 m
Lowest and highest in 30 days: 10.89 m – 11.16 m
Lowest and highest in 12 months: 10.77 m – 11.15 m

High water at South Nation River at Spencerville

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

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).

Weather at the gauge

Rain in the last 3 days: 14 mm. Rain that falls upstream can take hours or days to show up at a river gauge.

19 Mon 16° 6° – Wind 18 km/h

20 Tue 12° 4° – Wind 15 km/h

21 Wed 12° 1° – Wind 10 km/h

22 Thu 15° 3° – Wind 13 km/h

23 Fri 10° 1° – Wind 13 km/h

24 Sat 13° 0° – Wind 8 km/h

25 Sun 15° 3° – Wind 17 km/h

Forecast: Open-Meteo

Sunrise 07:23 AM Sunset 06:12 PM Daylight 10 hr, 49 min First quarter 59%

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	6.33 m	Very high	+0.02 m	38 km
South Nation River near Plantagenet SpringsRiver gauge, South Nation River	1.47 m	Very high	−0.43 m	87 km

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
North Branch South Nation River near HeckstonRiver gauge, North Branch South Nation River	1.15 m	Very high	−0.10 m	17 km
Kemptville Creek near KemptvilleRiver gauge, Kemptville Creek	6.13 m	Very high	−0.03 m	19 km
South Branch South Nation River near Winchester SpringsRiver gauge, South Branch South Nation River	7.62 m	Very high	−0.19 m	22 km
Rideau River below MerrickvilleRiver gauge, Rideau River	4.63 m	Very high	±0	25 km
Oswegatchie River near HeuveltonRiver gauge, Oswegatchie River	2.91 ft	Below flood stage	+0.04 ft	19 mi
Buells Creek at BrockvilleRiver gauge, Buells Creek	0.85 m	Normal	−0.03 m	31 km
Grass River at Chase MillsRiver gauge, Grass River	1,010 cfs	Normal	−250.0 cfs	23 mi
Lyn Creek near LynRiver gauge, Lyn Creek	7.97 m	High	−0.05 m	41 km

Questions and answers

Is the South Nation River at Spencerville higher than last year?

Yes, it is 0.38 m higher than on the same day last year, when the reading was 10.76 m.

What is a normal level for the South Nation River at Spencerville in mid-October?

The median for mid-October is 10.93 m. In 8 years out of 10 the reading falls between 10.80 m and 11.10 m, based on 20 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 11.14 m on the gauge does not mean the water is that deep.

What is the water level of South Nation River at Spencerville today?

On Oct 19, 2026, 07:50 AM EDT, the water level was 11.14 m. Down 0.01 m over the last 24 hours.

Is South Nation River at Spencerville rising or falling?

Down 0.01 m over the last 24 hours. Up 0.21 m over the last 7 days.

Is the level of South Nation River at Spencerville normal?

Very high for mid-October. Compared with 20 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:02LB007 (Agency page)
Coordinates: 44.84225, -75.54442 (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

Parameter	Last value	Time (UTC)	Quality
Water level	11.14 m	2026-10-19 11:50	Provisional
Flow	3.83 m³/s	2026-10-19 11:50	Provisional

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How to cite

Environment and Climate Change Canada – Water Survey of Canada: South Nation River at Spencerville (eccc:02LB007). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/canada/ontario/south-nation-river-at-spencerville

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.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer