Sydenham River near Alvinston water level

Name: Sydenham River near Alvinston 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

10.59m Steady over the last 24 hours

Measured Oct 15, 2026, 06:00 PM EDT (4 days ago)

Flow: 2.11 m³/s

History

7 days 30 days 1 year Years compared

20252026

Water level Normal range (10–90 %)

What this means

The gauge at Sydenham River near Alvinston reads 10.59 m, a normal level for mid-October.

That puts it 0.03 m above the median of 10.56 m for mid-October, based on 21 years of readings. A year ago it stood at 10.48 m (+0.11 m).

The level has held steady over the past 24 hours. Over the past 30 days it has moved between 10.48 m and 10.66 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: 10.56 m0.03 m above the median for this date
Normal for this date: 10.50 m – 10.87 m8 years in 10 fall in this range (21 years of records)
Same day last year: 10.48 m+0.11 m
Lowest and highest in 30 days: 10.48 m – 10.66 m
Lowest and highest in 12 months: 10.48 m – 11.87 m

Conditions at Sydenham River near Alvinston

Paddlers should check the trend as well as the level; summer storms can raise rivers quickly.

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 07:46 AM Sunset 06:40 PM Daylight 10 hr, 54 min First quarter 59%

Map

Other gauges on the Sydenham River

Gauge	Level	Compared with normal	24 hours	Distance
Sydenham River at StrathroyRiver gauge, Sydenham River	1.83 m	Low	±0	23 km
Sydenham River at FlorenceRiver gauge, Sydenham River	3.11 m	Normal	−0.03 m	24 km
Sydenham River at WallaceburgRiver gauge, Sydenham River	5.22 m	Normal	−0.03 m	51 km

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Bear Creek near PetroliaRiver gauge, Bear Creek	4.12 m	Normal	+0.01 m	23 km
Thames River near DuttonRiver gauge, Thames River	3.70 m	Normal	−0.05 m	25 km
Ausable River near SpringbankRiver gauge, Ausable River	1.74 m	Normal	−0.03 m	31 km
Thames River at ThamesvilleRiver gauge, Thames River	10.86 m	Normal	−0.05 m	33 km
Black Creek near BradshawRiver gauge, Black Creek	6.40 m	Normal	+0.01 m	34 km
Bear Creek below BrigdenRiver gauge, Bear Creek	3.90 m	Normal	−0.03 m	36 km
South Parkhill Creek near ParkhillRiver gauge, South Parkhill Creek	1.86 m	Normal	−0.02 m	38 km
Oxbow Creek near KilworthRiver gauge, Oxbow Creek	4.69 m	Normal	−0.01 m	38 km

Questions and answers

How does the Sydenham River near Alvinston compare with last year?

It is 0.11 m higher than on the same day last year, when the reading was 10.48 m.

What is a normal level for the Sydenham River near Alvinston in mid-October?

The median for mid-October is 10.56 m. In 8 years out of 10 the reading falls between 10.50 m and 10.87 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 10.59 m on the gauge does not mean the water is that deep.

What is the water level of Sydenham River near Alvinston today?

On Oct 15, 2026, 06:00 PM EDT, the water level was 10.59 m. Steady over the last 24 hours.

Is Sydenham River near Alvinston rising or falling?

Steady over the last 24 hours. Up 0.09 m over the last 7 days.

Is the level of Sydenham River near Alvinston 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:02GG002 (Agency page)
Coordinates: 42.83081, -81.85172 (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	10.59 m	2026-10-15 22:00	Provisional
Flow	2.11 m³/s	2026-10-15 22:00	Provisional

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How to cite

Environment and Climate Change Canada – Water Survey of Canada: Sydenham River near Alvinston (eccc:02GG002). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/canada/ontario/sydenham-river-near-alvinston

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