Tay River in Perth water level

Name: Tay River in Perth 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, Tay River, Ontario, Canada

Directions

Low for mid-October

Water level

7.29m Steady over the last 24 hours

Measured Oct 17, 2026, 12:40 PM EDT (1 hour ago)

Flow: 5.51 m³/s

History

7 days 30 days 1 year Years compared

20252026

Water level Normal range (10–90 %)

What this means

The Tay River in Perth is running below normal at 7.29 m.

The median for mid-October is 7.37 m, based on 21 years of readings, so the water level is 0.08 m below typical. On the same day last year the reading was 7.15 m, a difference of +0.14 m.

It has barely moved over the past 24 hours. Without real rain upstream, that is unlikely to change quickly. In the last month it has stayed between 7.23 m and 7.35 m.

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

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

Key numbers

Median for this date: 7.37 m0.08 m below the median for this date
Normal for this date: 7.24 m – 7.49 m8 years in 10 fall in this range (21 years of records)
Same day last year: 7.15 m+0.14 m
Lowest and highest in 30 days: 7.23 m – 7.35 m
Lowest and highest in 12 months: 7.09 m – 7.35 m

On the river

Outside the spring freshet, most rivers settle into a gentler pattern, broken by storms.

Flood advisories come from the provincial river forecast centre.

About the Tay River

The Tay River is a river in Lanark County in Eastern Ontario, Canada. It is in the Saint Lawrence River drainage basin and is a left tributary of the Rideau River.

Weather at the gauge

Rain in the last 3 days: 9.7 mm. Rain that falls upstream can take hours or days to show up at a river gauge.

17 Sat 6° 0° – Wind 24 km/h

18 Sun 13° 0° – Wind 22 km/h

19 Mon 18° 4° – Wind 16 km/h

20 Tue 15° 5° – Wind 16 km/h

21 Wed 12° 2° – Wind 13 km/h

22 Thu 15° 3° – Wind 14 km/h

23 Fri 13° 2° – Wind 10 km/h

Forecast: Open-Meteo

Sunrise 07:24 AM Sunset 06:18 PM Daylight 10 hr, 55 min First quarter 42%

Map

Other gauges on the Tay River

Gauge	Level	Compared with normal	24 hours	Distance
Tay River near BolingbrokeRiver gauge, Tay River	8.24 m	High	−0.01 m	24 km

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Fall River at Outlet of Bennett LakeRiver gauge, Fall River	1.04 m	High	−0.01 m	14 km
Mississippi River at Fergusons FallsRiver gauge, Mississippi River	3.07 m	High	+0.03 m	18 km
Clyde River near LanarkRiver gauge, Clyde River	8.26 m	High	+0.04 m	20 km
Mississippi River at Outlet of Dalhousie LakeRiver gauge, Mississippi River	6.28 m	Normal	+0.02 m	24 km
Mississippi River at AppletonRiver gauge, Mississippi River	1.70 m	Normal	±0	33 km
Sharbot Lake at Outlet of Sharbot LakeLake, Sharbot Lake	1.09 m	High	±0	34 km
Rideau River below MerrickvilleRiver gauge, Rideau River	4.63 m	Very high	−0.01 m	35 km
Indian River near BlakeneyRiver gauge, Indian River	8.63 m	High	−0.03 m	39 km

Questions and answers

Is the Tay River in Perth higher than last year?

Yes, it is 0.14 m higher than on the same day last year, when the reading was 7.15 m.

What is a normal level for the Tay River in Perth in mid-October?

The median for mid-October is 7.37 m. In 8 years out of 10 the reading falls between 7.24 m and 7.49 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 7.29 m on the gauge does not mean the water is that deep.

What is the water level of Tay River in Perth today?

On Oct 17, 2026, 12:40 PM EDT, the water level was 7.29 m. Steady over the last 24 hours.

Is Tay River in Perth rising or falling?

Steady over the last 24 hours. Up 0.05 m over the last 7 days.

Is the level of Tay River in Perth normal?

Low 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:02LA024 (Agency page)
Coordinates: 44.89692, -76.25250 (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	7.29 m	2026-10-17 16:40	Provisional
Flow	5.51 m³/s	2026-10-17 16:40	Provisional

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How to cite

Environment and Climate Change Canada – Water Survey of Canada: Tay River in Perth (eccc:02LA024). Accessed October 17, 2026 via Nivelmap, https://nivelmap.com/en/canada/ontario/tay-river-in-perth

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