Whitson River at Chelmsford water level

Name: Whitson River at Chelmsford 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, Whitson River, Ontario, Canada

Directions

Normal for mid-October

Water level

8.77m Steady over the last 24 hours

Measured Oct 18, 2026, 11:55 PM EDT (1 hour ago)

Flow: 1.31 m³/s

History

7 days 30 days 1 year Years compared

20252026

Water level Normal range (10–90 %)

What this means

Water levels are unremarkable at Whitson River at Chelmsford, where the gauge shows 8.77 m.

The median for mid-October is 8.75 m, based on 21 years of readings, so the water level is 0.02 m above typical. On the same day last year the reading was 8.71 m, a difference of +0.06 m.

It has barely moved over the past 24 hours. The 30-day range is 8.66 m – 8.78 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: 8.75 m0.02 m above the median for this date
Normal for this date: 8.64 m – 9.02 m8 years in 10 fall in this range (21 years of records)
Same day last year: 8.71 m+0.06 m
Lowest and highest in 30 days: 8.66 m – 8.78 m
Lowest and highest in 12 months: 8.66 m – 8.91 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.

Weather at the gauge

Rain in the last 3 days: 8.9 mm. Rain that falls upstream can take hours or days to show up at a river gauge.

18 Sun 15° 1° – Wind 32 km/h

19 Mon 16° 5° – Wind 17 km/h

20 Tue 11° 1° – Wind 13 km/h

21 Wed 16° 3° – Wind 16 km/h

22 Thu 16° 6° – Wind 7 km/h

23 Fri 14° 3° – Wind 9 km/h

24 Sat 14° 5° – Wind 19 km/h

Forecast: Open-Meteo

Sunrise 07:48 AM Sunset 06:32 PM Daylight 10 hr, 44 min First quarter 56%

Map

Other gauges on the Whitson River

Gauge	Level	Compared with normal	24 hours	Distance
Whitson River at Val CaronRiver gauge, Whitson River	7.37 m	Low	−0.01 m	13 km

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Onaping River near LevackRiver gauge, Onaping River	1.16 m	Low	−0.02 m	14 km
Moose Creek at LevackRiver gauge, Moose Creek	1.08 m	Normal	±0	16 km
Vermilion River near Val CaronRiver gauge, Vermilion River	2.86 m	Normal	−0.02 m	18 km
Junction Creek at SudburyRiver gauge, Junction Creek	0.95 m	Normal	±0	19 km
Junction Creek below Kelley LakeRiver gauge, Junction Creek	2.76 m	Normal	−0.02 m	19 km
Coniston Creek above Wanapitei RiverRiver gauge, Coniston Creek	1.08 m	Normal	−0.01 m	31 km
Vermilion River near MilnetRiver gauge, Vermilion River	3.58 m	Very low	±0	32 km
Ministic Creek above Agnew LakeRiver gauge, Ministic Creek	3.04 m	Normal	−0.13 m	35 km

Questions and answers

Is the Whitson River at Chelmsford higher than last year?

Yes, it is 0.06 m higher than on the same day last year, when the reading was 8.71 m.

What is a normal level for the Whitson River at Chelmsford in mid-October?

The median for mid-October is 8.75 m. In 8 years out of 10 the reading falls between 8.64 m and 9.02 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 8.77 m on the gauge does not mean the water is that deep.

What is the water level of Whitson River at Chelmsford today?

On Oct 18, 2026, 11:55 PM EDT, the water level was 8.77 m. Steady over the last 24 hours.

Is Whitson River at Chelmsford rising or falling?

Steady over the last 24 hours. Up 0.11 m over the last 7 days.

Is the level of Whitson River at Chelmsford 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:02CF007 (Agency page)
Coordinates: 46.58336, -81.19911 (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	8.77 m	2026-10-19 03:55	Provisional
Flow	1.31 m³/s	2026-10-19 03:55	Provisional

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How to cite

Environment and Climate Change Canada – Water Survey of Canada: Whitson River at Chelmsford (eccc:02CF007). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/canada/ontario/whitson-river-at-chelmsford

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