Rat Lake near Notigi Control Structure water level

Name: Rat Lake near Notigi Control Structure 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, Rat Lake, Manitoba, Canada

Directions

High for mid-October

Surface elevation

258.04m Steady over the last 24 hours

Measured Oct 18, 2026, 05:30 PM CDT (1 hour ago)

History

What this means

At 258.04 m, Rat Lake near Notigi Control Structure is holding more water than usual for mid-October.

That puts it 0.14 m above the median of 257.90 m for mid-October, based on 11 years of readings. A year ago it stood at 257.94 m (+0.10 m).

The level has held steady over the past 24 hours. The 30-day range is 257.85 m – 258.09 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 11 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date: 257.90 m0.14 m above the median for this date
Normal for this date: 257.67 m – 258.15 m8 years in 10 fall in this range (11 years of records)
Same day last year: 257.94 m+0.10 m
Lowest and highest in 30 days: 257.85 m – 258.09 m
Lowest and highest in 12 months: 257.54 m – 258.09 m

Boating and fishing at Rat Lake near Notigi Control Structure

Slightly high water rarely causes problems on the water itself, though some low-lying shoreline spots may be wet.

Conditions at the shore change with the level, so check with the agency that runs the lake before a trip.

Weather at the gauge

The forecast is not available right now.

Sunrise 08:16 AM Sunset 06:31 PM Daylight 10 hr, 15 min First quarter 54%

Map

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Footprint River above Footprint LakeRiver gauge, Footprint River	29.63 m	Normal	+0.01 m	43 km
Churchill River above Leaf RapidsRiver gauge, Churchill River	869 m³/s	Normal	+20.0 m³/s	51 km
Footprint Lake at Nelson HouseLake, Footprint Lake	242.98 m	Normal	+0.03 m	54 km
Churchill River above Granville FallsRiver gauge, Churchill River	860 m³/s	Normal	±0	60 km
South Bay Diversion Channel at South BayCanal gauge, South Bay Diversion Channel	258.18 m	High	+0.04 m	66 km
Sapochi River near Nelson HouseRiver gauge, Sapochi River	9.32 m	High	±0	66 km
Southern Indian Lake at South BayLake, Southern Indian Lake	258.28 m	Very high	+0.06 m	68 km

Questions and answers

How does Rat Lake near Notigi Control Structure compare with last year?

It is 0.10 m higher than on the same day last year, when the reading was 257.94 m.

What is a normal level for Rat Lake near Notigi Control Structure in mid-October?

The median for mid-October is 257.90 m. In 8 years out of 10 the reading falls between 257.67 m and 258.15 m, based on 11 years of records.

Is Rat Lake near Notigi Control Structure really 258.04 m deep?

No. 258.04 m is the height of the water surface above sea level (or the agency's vertical datum), not the depth of the water.

What is the water level of Rat Lake near Notigi Control Structure today?

On Oct 18, 2026, 05:30 PM CDT, the surface elevation was 258.04 m. Steady over the last 24 hours.

Is Rat Lake near Notigi Control Structure rising or falling?

Steady over the last 24 hours. Down 0.04 m over the last 7 days.

Is the level of Rat Lake near Notigi Control Structure normal?

High for mid-October. Compared with 11 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:05TF004 (Agency page)
Coordinates: 56.13250, -99.48342 (WGS84)
Vertical datum: CHURCHILL RIVER DATUM (MANITOBA HYDRO)
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
Surface elevation	258.04 m	2026-10-18 22:30	Provisional

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How to cite

Environment and Climate Change Canada – Water Survey of Canada: Rat Lake near Notigi Control Structure (eccc:05TF004). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/canada/manitoba/rat-lake-near-notigi-control-structure

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