Lake Ontario
Ontario, Canada
Location created by
Don Ross
- Group: County Sustainability Group
- Lat: 43.9348812
- Lng: -76.9893765
- Waterbody Type: Lake
- Timezone: America/Toronto
Latest photos
Issues Summary
Observations summary
Observation tests summary
Air temperature
°C
7.0
Latest
19.1
Average
Water temperature
°C
3.6
Latest
15.4
Average
Alkalinity
mg/L
100
Latest
95
Average
Hardness
mg/L
175
Latest
172
Average
Dissolved oxygen
mg/L
9.0
Latest
7.8
Average
Conductivity
μS/cm
254
Latest
287
Average
Secchi depth
m
0.0
Latest
0.0
Average
Water depth
m
0.1
Latest
0.2
Average
pH (0-14)
7.0
Latest
7.8
Average
Phosphates total
ppm
3.0
Latest
3.0
Average
Chlorine
ppm
0.3
Latest
0.3
Average
Ice On
- 2025-01-14
- 2023-01-02
- 2021-12-30
- 2020-12-30
Ice Off
- 2025-02-28
- 2024-02-17
- 2023-03-03
- 2022-03-10
- 2021-03-08
- 2020-03-22
- 2019-04-17
- 2018-03-31