St Lawrence : St Lawrence River

Cornwall, Ontario, Canada

Observed by
Mark Bellis
  • Observed on: Tue, 08 Jul 2025 18:27:00 -0400
  • Lat: 45.0162273
  • Lng: -74.6961093

Observation report

See trends at this location

Water quality tests

Pending Quality Check from Water Rangers What's this?

pH (0-14) What's this? 7.8
Dissolved oxygen mg/L What's this? 10.0
Secchi depth m What's this? bottom visible
Chlorine ppm What's this? 0.0
Hardness mg/L What's this? 100.0
Alkalinity mg/L What's this? 120.0
Water depth m What's this? 0.17
Conductivity μS/cm What's this? 303.0
Air temperature °C What's this? 26.0
Water temperature °C What's this? 24.0

Weather

Current weather What's this?
Shallow bay
Weather in previous 24 hours What's this?
Overcast

Latest photos

No photos uploaded.