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Perch Creek at Sarnia water level

River gauge, Perch Creek, Ontario, Canada

Directions

Low for mid-October

Water level

2.49m Down 0.01 m over the last 24 hours

2.5 2.7 3.0 3.2

History

2.52.83.03.3mOct 12Oct 13Oct 15Oct 17Oct 182.52.83.03.3mOct 12Oct 15Oct 18
2.53.0mSep 19Sep 26Oct 3Oct 11Oct 182.53.0mSep 19Oct 3Oct 18
Water level Normal range (10–90 %)

What this means

At 2.49 m, Perch Creek at Sarnia is below normal for mid-October.

That puts it 0.31 m below the median of 2.80 m for mid-October, based on 20 years of readings.

The level is falling, down 0.01 m over the past 24 hours. Without real rain upstream, that is unlikely to change quickly. Over the past 30 days it has moved between 2.48 m and 3.08 m.

Fall is often low-water season on rivers, and it usually takes a few days of steady rain to change that.

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

Key numbers

Median for this date
2.80 m0.31 m below the median for this date
Normal for this date
2.44 m – 3.22 m8 years in 10 fall in this range (20 years of records)
Lowest and highest in 30 days
2.48 m – 3.08 m
Lowest and highest in 12 months
2.48 m – 2.87 m

Conditions at Perch Creek at Sarnia

Low water means shallow riffles on canoe trips and warmer water for fish.

Flood advisories come from the provincial river forecast centre.

Weather at the gauge

Rain in the last 3 days: 1.8 mm. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 17° 2° – Wind 25 km/h
19 Mon 19° 3° – Wind 14 km/h
20 Tue 18° 4° – Wind 14 km/h
21 Wed 18° 6° – Wind 12 km/h
22 Thu 18° 8° – Wind 11 km/h
23 Fri 18° 9° – Wind 16 km/h
24 Sat 20° 6° – Wind 18 km/h

Forecast: Open-Meteo

Sunrise 07:47 AM Sunset 06:43 PM Daylight 10 hr, 56 min First quarter 53%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
St. Clair River at Port HuronRiver gauge, St. Clair River 578.24 ft Normal +0.05 ft 5.4 mi
Bear Creek near PetroliaRiver gauge, Bear Creek 4.12 m Normal +0.01 m 18 km
Bear Creek below BrigdenRiver gauge, Bear Creek 3.93 m Normal +0.01 m 19 km
Black Creek near BradshawRiver gauge, Black Creek 6.40 m Normal +0.01 m 25 km
Black River near JeddoRiver gauge, Black River 2.99 ft Below flood stage −0.10 ft 19 mi
Mill Creek near AvocaRiver gauge, Mill Creek 0.91 ft Below flood stage +0.06 ft 22 mi
Belle River at MemphisRiver gauge, Belle River 15.5 cfs Normal −1.3 cfs 23 mi
Sydenham River near AlvinstonRiver gauge, Sydenham River 10.59 m Normal −0.01 m 42 km

Questions and answers

What is a normal level for Perch Creek at Sarnia in mid-October?

The median for mid-October is 2.80 m. In 8 years out of 10 the reading falls between 2.44 m and 3.22 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 2.49 m on the gauge does not mean the water is that deep.

What is the water level of Perch Creek at Sarnia today?

On Oct 18, 2026, 06:40 PM EDT, the water level was 2.49 m. Down 0.01 m over the last 24 hours.

Is Perch Creek at Sarnia rising or falling?

Down 0.01 m over the last 24 hours. Down 0.05 m over the last 7 days.

Is the level of Perch Creek at Sarnia normal?

Low 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.

Where does this data come from?

The values come directly from Environment and Climate Change Canada – Water Survey of Canada, the official operator of this gauge, and are published under the Open Government Licence – Canada. We do not estimate or model live values.

For specialists

Station codes, datum, parameters, data quality and downloads
Operator
Environment and Climate Change Canada – Water Survey of Canada
Station code
eccc:02FF012 (Agency page)
Coordinates
42.98408, -82.31875 (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 2.49 m 2026-10-18 22:40 Provisional

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How to cite

Environment and Climate Change Canada – Water Survey of Canada: Perch Creek at Sarnia (eccc:02FF012). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/canada/ontario/perch-creek-at-sarnia

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