
St Lawrence River
Ontario, Canada

Location created by
Sarah Greenwood
- Group: River Institute : Community-based Water Monitoring
- Lat: 45.016
- Lng: -74.7014
- Waterbody Type: River
- Timezone: America/Toronto
Latest photos
View all photosObservations summary
Observation tests summary
Air temperature
°C
24.0
Latest
18.5
Average
Water temperature
°C
22.3
Latest
17.8
Average
Alkalinity
mg/L
90
Latest
130
Average
Hardness
mg/L
100
Latest
164
Average
pH (0-14)
8.0
Latest
8.1
Average
Chlorine
ppm
0.0
Latest
0.4
Average
Conductivity
μS/cm
307
Latest
159
Average
Dissolved oxygen
mg/L
9.0
Latest
6.3
Average
Water depth
m
0.1
Latest
0.5
Average
Secchi depth
m
0.0
Latest
0.0
Average