Big Lake at Taglu Island water level

Name: Big Lake at Taglu Island 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

Lake, Big Lake, Northwest Territories, Canada

Directions

Normal for mid-October

Water level

8.66m Up 0.05 m over the last 24 hours

Measured Oct 20, 2026, 02:40 AM PDT (1 hour ago)

History

7 days 30 days 10 years Years compared

201620172026

Water level Normal range (10–90 %)

What this means

Nothing unusual at Big Lake at Taglu Island right now: the water level of 8.66 m is in the normal range for mid-October.

The median for mid-October is 8.63 m, based on 13 years of readings, so the water level is 0.03 m above typical.

The water is rising: up 0.05 m over the past 24 hours. Over the past 30 days it has moved between 8.42 m and 9.01 m.

Lakes and reservoirs often sit lower in fall after a summer of evaporation and use, and recover with winter rain and spring snowmelt.

Compared with 13 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 8.63 m0.03 m above the median for this date
Normal for this date: 8.44 m – 8.84 m8 years in 10 fall in this range (13 years of records)
Lowest and highest in 30 days: 8.42 m – 9.01 m
Lowest and highest in 12 months: 8.46 m – 9.01 m

Swimming and boating at Big Lake at Taglu Island

At a normal level, ramps and marinas generally run as usual, and fishing tends to follow the season more than the water level.

If you swim, pick a spot with an easy way out, and remember that drop-offs move as the level changes.

Weather at the gauge

Rain in the last 3 days: 17 mm.

20 Tue -1° -10° 1.1 mm, 100% Wind 21 km/h

21 Wed -1° -5° 2.1 mm, 100% Wind 37 km/h

22 Thu -3° -7° 1.1 mm, 31% Wind 26 km/h

23 Fri -5° -7° – Wind 26 km/h

24 Sat 0° -8° – Wind 31 km/h

25 Sun 2° 0° – Wind 30 km/h

26 Mon 2° 0° – Wind 35 km/h

Forecast: Open-Meteo

Sunrise 09:31 AM Sunset 05:59 PM Daylight 8 hr, 28 min First quarter 67%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Mackenzie River at Kuluarpak ChannelRiver gauge, Mackenzie River	9.08 m	Very high	+0.05 m	4.2 km
Mackenzie River (Kumak Channel) below Middle ChannelRiver gauge, Mackenzie River (Kumak Channel)	5.30 m	Very low	−0.21 m	13 km
Mackenzie River (Middle Channel) at Tununuk PointRiver gauge, Mackenzie River (Middle Channel)	10.14 m	High	−0.01 m	44 km
Mackenzie River (Reindeer Channel) at Ellice IslandRiver gauge, Mackenzie River (Reindeer Channel)	9.82 m	Very high	+0.03 m	47 km
Hans Creek above Husky LakesRiver gauge, Hans Creek	4.03 m	Very high	+0.11 m	80 km

Questions and answers

What is a normal level for Big Lake at Taglu Island in mid-October?

The median for mid-October is 8.63 m. In 8 years out of 10 the reading falls between 8.44 m and 8.84 m, based on 13 years of records.

What is the water level of Big Lake at Taglu Island today?

On Oct 20, 2026, 02:40 AM PDT, the water level was 8.66 m. Up 0.05 m over the last 24 hours.

Is Big Lake at Taglu Island rising or falling?

Up 0.05 m over the last 24 hours. Down 0.10 m over the last 7 days.

Is the level of Big Lake at Taglu Island normal?

Normal for mid-October. Compared with 13 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:10LC020 (Agency page)
Coordinates: 69.38938, -134.96902 (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	8.66 m	2026-10-20 09:40	Provisional

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How to cite

Environment and Climate Change Canada – Water Survey of Canada: Big Lake at Taglu Island (eccc:10LC020). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/canada/northwest-territories/big-lake-at-taglu-island

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