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Len's Cove Marina, Portland, on the Big Rideau

Big Rideau Lake

Portland, Ontario, Canada

Location created by
Martin Lalumière

Group: Big Rideau Lake Association : Big Rideau Lake Water Quality
Lat: 44.6980006
Lng: -76.1936992
Waterbody Type: Lake
Timezone: America/Toronto

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Observation tests summary

Total kjeldahl nitrogen μS/cm

950 Latest

414 Average

2005-06-09 -> 2017-06-21

Total phosphorus ppm

0.1 Latest

17.2 Average

2005-06-09 -> 2017-06-21

Water temperature °C

20.3 Latest

21.4 Average

2008-07-23 -> 2023-09-23

Air temperature °C

19.0 Latest

24.9 Average

2010-06-08 -> 2023-09-23

Dissolved oxygen mg/L

6.0 Latest

8.3 Average

2010-06-08 -> 2023-09-23

pH (0-14)

7.8 Latest

8.1 Average

2010-08-11 -> 2023-09-23

E.coli cfu per 100mL

14 Latest

28 Average

2016-07-19 -> 2017-06-21

Conductivity μS/cm

202 Latest

223 Average

2017-06-21 -> 2023-09-23

Dissolved oxygen %

6.0 Latest

52.5 Average

2017-06-21 -> 2019-07-20

Alkalinity mg/L

80 Latest

105 Average

2018-06-02 -> 2023-09-23

Hardness mg/L

20 Latest

94 Average

2018-06-02 -> 2023-09-23

Secchi depth m

1.9 Latest

1.4 Average

2018-06-02 -> 2023-09-23

Water depth m

1.9 Latest

1.4 Average

2018-06-17 -> 2023-09-23

Chlorine ppm

0.0 Latest

0.1 Average

2019-07-20 -> 2023-09-23

Ice On

Ice Off

2022-06-24
2022-05-30