Portland Municipal Beach

Big Rideau Lake

Portland, Ontario, Canada

Location created by
Doris Albert

Group: Big Rideau Lake Association : Big Rideau Lake Water Quality
Lat: 44.6992266
Lng: -76.1923058
Waterbody Type: Lake
Timezone: America/Toronto

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Latest photos

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Observation tests summary

Air temperature °C

30.0 Latest

25.8 Average

2021-07-21 -> 2025-06-30

Water temperature °C

23.5 Latest

21.6 Average

2021-07-21 -> 2025-06-30

Alkalinity mg/L

60 Latest

83 Average

2021-07-21 -> 2025-06-30

Hardness mg/L

120 Latest

41 Average

2021-07-21 -> 2025-06-30

Dissolved oxygen mg/L

11.0 Latest

7.5 Average

2021-07-21 -> 2025-06-30

Chlorine ppm

0.0 Latest

0.0 Average

2021-07-21 -> 2023-09-23

Conductivity μS/cm

216 Latest

195 Average

2021-07-21 -> 2025-06-30

pH (0-14)

7.3 Latest

7.8 Average

2021-07-21 -> 2025-06-30

Secchi depth m

2.3 Latest

3.0 Average

2021-08-23 -> 2023-09-23

Water depth m

1.3 Latest

2.9 Average

2021-08-23 -> 2025-06-30

Ice On

Ice Off

2022-09-25
2022-09-03
2022-07-30
2022-06-24
2022-05-30