Is Off Lake safe to swim in?

Good for swimming, clear water with low algae levels. Off Lake has an overall water quality grade of B. Always check local health department advisories before swimming.

Rainy River District County, Ontario · Water Quality Report Card

Off Lake

Grade B — Good

Eutrophic

Off Lake in Rainy River District, Ontario received a water quality grade of B (Good). Water clarity: 1.4 m visibility. Phosphorus: 18.7 µg/L.

Clarity: 1.4 m
Type: Eutrophic

Where to stay →Safe to swim?

Off Lake is a productive, nutrient-rich eutrophic lake in Rainy River District County, Ontario. Water quality is graded B based on 2 sampling years through 2023. Compared to the 79 other monitored lakes in Rainy River District County, Off Lake ranks #60 for water quality.

Source: EPA Water Quality Portal sampling records, Ontario MECP, last sampled 2023-05-16. Grade methodology: LakeGrade methodology.

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Swimming Safety

Good for swimming, clear water with low algae levels

Compare the safest swimming lakes near Bemidji →

Water Quality Grade: B, Good

Murky, only visible to about 4.6 ft. Phosphorus level: 18.7 µg/L. Trophic State Index: 51.

Metric	Value	Grade
Water Clarity (Secchi Depth)	1.4 m	D
Phosphorus	18.7 µg/L	A
Chlorophyll-a (Algae)	No data
Trophic State Index (TSI)	51	Eutrophic

High nutrients, frequent algae, reduced clarity

Where to stay near Off Lake

Compare lakeside cabins, hotels, and vacation rentals near Off Lake in Rainy River District, Ontario — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.

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Fishing Off Lake

→ Off Lake fishing regulations (limits, seasons, special rules)

Location

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County Ranking

Ranked #60 of 80 lakes in Rainy River District

Cleaner Lakes Within 30 Miles

Off Lake holds Grade B. 4 nearby lakes hold higher grades.

See full comparison →

Nearby Lakes in Rainy River District

Little Kishkutena Lake

Explore Off Lake across LakeGrade

Lake Fishing Forecast

Species activity outlook by water temperature and season

Eutrophic Lakes

High nutrients, frequent algae, reduced clarity

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Other Grade B Lakes in Ontario

Rowan Lake

Kenora District · 2.7 m

N.L.-Kenora Lake

Kenora District · 2.5 m

Lawrence Lake

Kenora District · 3 m

Priam Lake

Kenora District · 2.1 m

Populus Lake

Kenora District · 2.8 m

Lower Stewart Lake

Kenora District · 2 m

Eutrophic Lakes in Ontario

Caliper Lake Bottle Bay Lake Slim Lake Grassy Lake

More records, surveys & data sources

Where this data comes from

Measurements for Off Lake come from the EPA Water Quality Portal. Per-sample source details are not recorded for this lake.

Data Sources

Water quality data from the EPA Water Quality Portal

Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion

Most recent sample: 2023-05-16

Monitoring stations:

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