Gull Lake

Normal

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

Low (3.42m)Normal rangeHigh (4.04m)

Current Weather

2d ago

19°CSunny

Wind NE 13 km/h

Humidity 40%

A mix of sun and cloud

Environment Canada — Peterborough - Kawartha Lakes

vs. Last Year

No data available

7-Day Trend

↓Falling

Down 8.2 cm over the past week

-8.2 cm over 7 days

Seasonal Position

60th percentile

Based on 23 years of records

Seasonal Outlook

Typical next 7 days

This lake usually rises slightly over the next week.

Typical next 14 days

Over two weeks, levels typically holds steady.

Tracking

This year is moving slower than usual.

Based on 23 years of seasonal patterns. Moderate historical coverage. This is a historical seasonal pattern, not a forecast.

Fish Consumption Advisories (5 species)

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

Cisco (Lake Herring)

Contaminant	Size	General pop.	Sensitive pop.
Mercury	30-35 cm	—	8/month
Mercury	35-40 cm	—	4/month
Mercury	25-30 cm	—	8/month
Mercury, PCB	20-25 cm	—	12/month
PCB	35-40 cm	12/month	—
PCB	15-20 cm	12/month	12/month
PCB	30-35 cm	12/month	—
PCB	25-30 cm	12/month	—
PCB	20-25 cm	12/month	—

Lake Trout

Contaminant	Size	General pop.	Sensitive pop.
Mercury	50-55 cm	—	4/month
Mercury	15-20 cm	—	4/month
Mercury	20-25 cm	—	4/month
Mercury	25-30 cm	—	4/month
Mercury	30-35 cm	—	4/month
Mercury	35-40 cm	—	4/month
Mercury	40-45 cm	—	4/month
Mercury	45-50 cm	—	4/month
Mercury, PCB	40-45 cm	12/month	—
Mercury, PCB	50-55 cm	12/month	—
Mercury, PCB	25-30 cm	12/month	—
Mercury, PCB	30-35 cm	12/month	—
Mercury, PCB	35-40 cm	12/month	—
Mercury, PCB	45-50 cm	12/month	—
PCB	15-20 cm	12/month	—
PCB	20-25 cm	12/month	—

Lake Whitefish

Contaminant	Size	General pop.	Sensitive pop.
	20-25 cm	32/month	32/month
	15-20 cm	32/month	32/month
	25-30 cm	32/month	—
Mercury	30-35 cm	—	12/month
Mercury	50-55 cm	12/month	4/month
Mercury	55-60 cm	8/month	4/month
Mercury	25-30 cm	—	16/month
Mercury	35-40 cm	—	8/month
Mercury	40-45 cm	—	8/month
Mercury	45-50 cm	—	4/month
Mercury, PCB	45-50 cm	16/month	—
Mercury, PCB	40-45 cm	16/month	—
Mercury, PCB	35-40 cm	16/month	—
Mercury, PCB	30-35 cm	16/month	—

⚠Largemouth Bass

Contaminant	Size	General pop.	Sensitive pop.
Mercury	45-50 cm	8/month	Do not eat
Mercury	15-20 cm	16/month	8/month
Mercury	20-25 cm	16/month	8/month
Mercury	25-30 cm	16/month	4/month
Mercury	30-35 cm	12/month	4/month
Mercury	35-40 cm	8/month	4/month
Mercury	40-45 cm	8/month	4/month

⚠Smallmouth Bass

Contaminant	Size	General pop.	Sensitive pop.
Mercury	45-50 cm	4/month	Do not eat
Mercury	50-55 cm	4/month	Do not eat
Mercury	15-20 cm	16/month	12/month
Mercury	20-25 cm	16/month	8/month
Mercury	25-30 cm	12/month	4/month
Mercury	30-35 cm	8/month	4/month
Mercury	35-40 cm	4/month	Do not eat
Mercury	40-45 cm	4/month	Do not eat

Source: Guide to Eating Ontario Fish (2025). Advisory data is updated annually.

Boat Launches (1)

Elliott Falls (gull River)

1.4 km

Map ↗

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

Water Level — Last 30 Days

Technical details

Current level: 3.85 m
Reference value: 3.85 m (rolling_6h_mean)
Percentile for date: 60th percentile
Years of record: 23
Source station: GULL RIVER AT NORLAND (02HF002)
Est. average depth: —
Relationship type: lake_outlet
Mapping confidence: medium
Today's normal range: 3.72–3.89 m
Same-date historical range: 3.42–4.04 m
30-day change: +0.8 cm
Data confidence: medium
Observed at: Sep 20, 2026
Last snapshot: Sep 20, 2026

Data source: ECCC Water Office — Station 02HF002. Water level readings are provisional and subject to revision. This is not a navigation or flood-warning service.