Cow Island

Big Rideau Lake

Portland, Ontario, Canada

Location created by
Gayle Mathe
  • Site ID: BRLA Cow Island
  • Lat: 44.7184
  • Lng: -76.2015
  • Waterbody Type: Lake
  • Timezone: America/Toronto

Latest photos

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Observation tests summary

Dissolved oxygen (%)
9.0 Latest
9.0 Average
Alkalinity (mg/L)
60 Latest
106 Average
Conductivity (uS/cm)
178 Latest
206 Average
Water temperature ℃
24.6 Latest
22.6 Average
Hardness (mg/L)
0 Latest
50 Average
pH (0-14)
8.0 Latest
7.7 Average
Air temperature ℃
32.0 Latest
25.1 Average
Secchi depth (m)
2.9 Latest
2.6 Average
Water Depth (m)
2.7 Latest
3.1 Average
Dissolved oxygen (mg/L)
8.0 Latest
7.3 Average
Total Dissolved Solids (ppm)
102.0 Latest
102.0 Average
Chlorine (ppm)
0.0 Latest
0.2 Average
Turbidity (JTU)
107 Latest
107 Average