pH (0-14) 
        What's this?
        7.8
      
    End of Briton Bay : Big Rideau Lake
Portland, Ontario, Canada
      
      Observed by 
      Diana Carr
    
  - Observed on: Fri, 04 Jul 2025 20:55:00 +0000
 - Testers Diana Carr
 - 
      Associated with: 
Big Rideau Lake Association : Big Rideau Lake Water Quality - Lat: 44.7633723
 - Lng: -76.1835248
 
Observation report
See trends at this locationWater quality tests
Pending Quality Check from Water Rangers What's this?
        Dissolved oxygen  mg/L
        What's this?
        7.0
      
    
        Secchi depth m
        What's this?
        3.49
      
    
        Chlorine  ppm
        What's this?
        0.0
      
    
        Hardness mg/L
        What's this?
        50.0
      
    
        Alkalinity mg/L
        What's this?
        60.0
      
    
        Water depth  m
        What's this?
        3.49
      
    
        Conductivity  μS/cm
        What's this?
        200.0
      
    
        Air temperature °C
        What's this?
        28.0
      
    
        Water temperature °C
        What's this?
        25.5
      
    Weather
        Current weather What's this?
        
    Latest photos
No photos uploaded.