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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Observation tests summary

Air temperature °C

28.0 Latest

25.9 Average

2021-07-21 -> 2025-07-27

Water temperature °C

26.0 Latest

21.9 Average

2021-07-21 -> 2025-07-27

Alkalinity mg/L

50 Latest

81 Average

2021-07-21 -> 2025-07-27

Hardness mg/L

130 Latest

47 Average

2021-07-21 -> 2025-07-27

Dissolved oxygen mg/L

7.0 Latest

7.5 Average

2021-07-21 -> 2025-07-27

Chlorine ppm

0.0 Latest

0.0 Average

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

Conductivity μS/cm

220 Latest

196 Average

2021-07-21 -> 2025-07-27

pH (0-14)

7.6 Latest

7.8 Average

2021-07-21 -> 2025-07-27

Secchi depth m

1.3 Latest

2.8 Average

2021-08-23 -> 2025-07-27

Water depth m

1.3 Latest

2.8 Average

2021-08-23 -> 2025-07-27

Ice On

Ice Off

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