LakeScout
Satellite view of Rainy Lake

Rainy Lake

Normal

Water level is right where you'd expect for mid-September and holding steady.

Low (336.05m)Normal rangeHigh (338.06m)

Current Weather

2d ago
13°C
Wind E 13 km/h
Humidity 74%

Mainly sunny

Environment Canada — Fort Frances - Rainy Lake

vs. Last Year

No data available

7-Day Trend

→Stable

Changed less than 2.0 cm over the past week

+1.1 cm over 7 days

Seasonal Position

32nd percentile

Based on 114 years of records

Seasonal Outlook

Typical next 7 days

This lake usually drops slightly over the next week.

Typical next 14 days

Over two weeks, levels typically drops moderately.

Tracking

This year is moving faster than usual.

Based on 114 years of seasonal patterns. This is a historical seasonal pattern, not a forecast.

Fish Consumption Advisories (6 species)

The following consumption advisories are in effect for fish caught in Rainy Lake.

Burbot (Ling)
ContaminantSizeGeneral pop.Sensitive pop.
55-60 cm32/month—
50-55 cm32/month—
45-50 cm32/month—
40-45 cm32/month—
Mercury40-45 cm—16/month
Mercury60-65 cm16/month12/month
Mercury55-60 cm—12/month
Mercury50-55 cm—16/month
Mercury45-50 cm—16/month
Lake Whitefish
ContaminantSizeGeneral pop.Sensitive pop.
45-50 cm32/month32/month
25-30 cm32/month32/month
30-35 cm32/month32/month
35-40 cm32/month32/month
40-45 cm32/month32/month
20-25 cm32/month32/month
⚠Northern Pike
ContaminantSizeGeneral pop.Sensitive pop.
30-35 cm32/month—
35-40 cm32/month—
Mercury40-45 cm16/month8/month
Mercury45-50 cm16/month8/month
Mercury50-55 cm16/month8/month
Mercury55-60 cm16/month8/month
Mercury60-65 cm16/month8/month
Mercury65-70 cm16/month4/month
Mercury70-75 cm12/month4/month
Mercury>75 cm8/monthDo not eat
Mercury30-35 cm—12/month
Mercury35-40 cm—12/month
⚠Smallmouth Bass
ContaminantSizeGeneral pop.Sensitive pop.
20-25 cm32/month—
Mercury50-55 cm4/monthDo not eat
Mercury45-50 cm4/monthDo not eat
Mercury40-45 cm8/monthDo not eat
Mercury35-40 cm12/month4/month
Mercury30-35 cm16/month8/month
Mercury25-30 cm16/month8/month
Mercury55-60 cm4/monthDo not eat
Mercury20-25 cm—12/month
⚠Walleye
ContaminantSizeGeneral pop.Sensitive pop.
20-25 cm32/month—
Mercury70-75 cm4/monthDo not eat
Mercury35-40 cm16/month8/month
Mercury40-45 cm16/month8/month
Mercury45-50 cm16/month4/month
Mercury50-55 cm12/month4/month
Mercury55-60 cm8/month4/month
Mercury60-65 cm8/month4/month
Mercury65-70 cm8/monthDo not eat
Mercury20-25 cm—12/month
Mercury25-30 cm16/month8/month
Mercury30-35 cm16/month8/month
White Sucker
ContaminantSizeGeneral pop.Sensitive pop.
35-40 cm32/month32/month
30-35 cm32/month32/month
25-30 cm32/month32/month
20-25 cm32/month32/month
40-45 cm32/month32/month
45-50 cm32/month32/month
55-60 cm32/month—
50-55 cm32/month—
Mercury60-65 cm16/month8/month
Mercury55-60 cm—12/month
Mercury50-55 cm—16/month
Source: Guide to Eating Ontario Fish (2025). Advisory data is updated annually.

Lake Profile

Est. average depth8.0 m

Estimated from HydroLAKES v1.0 (Messager et al., 2016). Modeled geo-statistical estimate, not a direct survey measurement.

Boat Launches (3)
Causeway Access Point
1.1 kmParking
Map ↗
Sorting Gap Marina
6.2 kmMunicipalParking
Map ↗
Unnamed launch — 9.4 km from lake centre
MunicipalParking
Map ↗

Source: Ontario MNR Fishing Access Points. Verify conditions before visiting.

Water Level — Last 30 Days

Technical details
Current level
337.49 m
Reference value
337.49 m (rolling_6h_mean)
Percentile for date
32nd percentile
Years of record
114
Source station
RAINY LAKE NEAR FORT FRANCES (05PB007)
Est. average depth
8.0 m
Relationship type
direct_lake
Mapping confidence
medium
Today's normal range
337.46–337.70 m
Same-date historical range
336.05–338.06 m
30-day change
-3.8 cm
Data confidence
medium
Observed at
Sep 20, 2026
Last snapshot
Sep 20, 2026

Data source: ECCC Water Office — Station 05PB007. Water level readings are provisional and subject to revision. This is not a navigation or flood-warning service.