Sydenham River at Wallaceburg water level

Name: Sydenham River at Wallaceburg 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, Sydenham River, Ontario, Canada

Directions

Normal for mid-October

Water level

5.25m Up 0.03 m over the last 24 hours

Measured Oct 18, 2026, 09:35 AM EDT (1 hour ago)

History

7 days 30 days 1 year Years compared

20252026

Water level Normal range (10–90 %)

What this means

Water levels are unremarkable at Sydenham River at Wallaceburg, where the gauge shows 5.25 m.

That puts it 0.01 m below the median of 5.26 m for mid-October, based on 21 years of readings. A year ago it stood at 5.06 m (+0.19 m).

It is on the way up, by 0.03 m over the past 24 hours. The 30-day range is 5.18 m – 5.35 m.

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

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

Key numbers

Median for this date: 5.26 m0.01 m below the median for this date
Normal for this date: 4.86 m – 5.75 m8 years in 10 fall in this range (21 years of records)
Same day last year: 5.06 m+0.19 m
Lowest and highest in 30 days: 5.18 m – 5.35 m
Lowest and highest in 12 months: 4.82 m – 5.35 m

Freshet, ice and paddling

Open-water season is the time for canoe trips and fishing, though rapids change character with every few centimetres of water.

Flood advisories come from the provincial river forecast centre.

About the Sydenham River

The Sydenham River is a river in Chatham-Kent, Lambton County and Middlesex County in southwestern Ontario, Canada, flowing southwest from its source west of London, Ontario and emptying into Lake Saint Clair. The length of the river is 165 kilometres (103 mi) and it drains a watershed of approximately 2,700 square kilometres (1,000 mi2), making it one of the largest river flowing into the St.Clair on the Canadian side. The river flows through the towns of Strathroy and Wallaceburg. It was named after Lord Sydenham, governor of Canada from 1839 to 1841.

Weather at the gauge

The forecast is not available right now.

Sunrise 07:47 AM Sunset 06:44 PM Daylight 10 hr, 57 min First quarter 50%

Map

Other gauges on the Sydenham River

Gauge	Level	Compared with normal	24 hours	Distance
Sydenham River at FlorenceRiver gauge, Sydenham River	3.13 m	Normal	−0.03 m	31 km
Sydenham River near AlvinstonRiver gauge, Sydenham River	10.59 m	Normal	−0.01 m	51 km
Sydenham River at StrathroyRiver gauge, Sydenham River	1.83 m	Low	±0	74 km

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Black Creek near BradshawRiver gauge, Black Creek	6.39 m	Normal	+0.01 m	21 km
Bear Creek below BrigdenRiver gauge, Bear Creek	3.93 m	Normal	+0.02 m	25 km
Thames River at ChathamRiver gauge, Thames River	1.57 m	Normal	−0.15 m	26 km
McGregor Creek near ChathamRiver gauge, McGregor Creek	1.12 m	Normal	−0.04 m	33 km
Thames River at ThamesvilleRiver gauge, Thames River	10.91 m	Normal	−0.05 m	34 km
Bear Creek near PetroliaRiver gauge, Bear Creek	4.11 m	Normal	+0.01 m	41 km
North Branch Clinton River near Mount ClemensRiver gauge, North Branch Clinton River	4.24 ft	Below flood stage	+0.06 ft	26 mi
Clinton River at Moravian Drive at Mount ClemensRiver gauge, Clinton River	5.16 ft	Below flood stage	+0.19 ft	27 mi

Questions and answers

How does the Sydenham River at Wallaceburg compare with last year?

It is 0.19 m higher than on the same day last year, when the reading was 5.06 m.

What is a normal level for the Sydenham River at Wallaceburg in mid-October?

The median for mid-October is 5.26 m. In 8 years out of 10 the reading falls between 4.86 m and 5.75 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 5.25 m on the gauge does not mean the water is that deep.

What is the water level of Sydenham River at Wallaceburg today?

On Oct 18, 2026, 09:35 AM EDT, the water level was 5.25 m. Up 0.03 m over the last 24 hours.

Is Sydenham River at Wallaceburg rising or falling?

Up 0.03 m over the last 24 hours. Up 0.04 m over the last 7 days.

Is the level of Sydenham River at Wallaceburg normal?

Normal 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:02GG008 (Agency page)
Coordinates: 42.59289, -82.38333 (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	5.25 m	2026-10-18 13:35	Provisional

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How to cite

Environment and Climate Change Canada – Water Survey of Canada: Sydenham River at Wallaceburg (eccc:02GG008). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/canada/ontario/sydenham-river-at-wallaceburg

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