O'Brien Lake

Ontario, Canada

Location created by
RVCA Lake Monitoring Program
  • Site ID: RVL-02_DP1
  • Lat: 44.7725
  • Lng: -76.4667
  • Waterbody Type: Lake
  • Timezone: America/Toronto

Latest photos

No photos uploaded.

Observation tests summary

Total Phosphorus (µg/L)
0.0 Latest
12.8 Average
Total Kjeldahl Nitrogen (µg/L)
0 Latest
399 Average
Water temperature ℃
22.9 Latest
19.7 Average
pH (0-14)
8.1 Latest
8.0 Average
Air temperature ℃
16.6 Latest
20.6 Average
Secchi depth (m)
4.0 Latest
5.3 Average
Dissolved oxygen (mg/L)
9.0 Latest
9.2 Average
Dissolved oxygen (%)
104.6 Latest
107.1 Average
Conductivity (uS/cm)
180 Latest
181 Average
Calcium (ppm)
23.4 Latest
23.4 Average