St Lawrence River
Ontario, Canada
Location created by
Sarah Greenwood
- Group: River Rapport & Education : River Institute
- Lat: 45.016
- Lng: -74.7014
- Waterbody Type: River
- Timezone: America/Toronto
Latest photos
Observations summary
Observation tests summary
Air temperature
°C
11.0
Latest
18.4
Average
Water temperature
°C
12.5
Latest
17.7
Average
Alkalinity
mg/L
120
Latest
129
Average
Hardness
mg/L
150
Latest
166
Average
pH (0-14)
7.5
Latest
8.2
Average
Chlorine
ppm
0.5
Latest
0.5
Average
Conductivity
μS/cm
364
Latest
61
Average
Dissolved oxygen
mg/L
10.0
Latest
4.9
Average
Water depth
m
1.0
Latest
1.0
Average