St. Lawrence River
Ontario, Canada
Location created by
River Institute
- Lat: 45.0416434
- Lng: -74.6087427
- Waterbody Type: River
- Timezone: America/Toronto
Latest photos
No photos uploaded.
Observation tests summary
Air temperature
°C
19.4
Latest
19.4
Average
Water temperature
°C
29.0
Latest
29.0
Average
Alkalinity
mg/L
180
Latest
180
Average
Hardness
mg/L
100
Latest
100
Average
Dissolved oxygen
mg/L
10.0
Latest
10.0
Average
Conductivity
μS/cm
316
Latest
316
Average
Secchi depth
m
0.0
Latest
0.0
Average
Water depth
m
0.5
Latest
0.5
Average
pH (0-14)
8.4
Latest
8.4
Average