Location

Cornwall Island South Inlet

St. Lawrence River

St. Lawrence River in Ontario

Dataset summary

Cornwall Island South Inlet has data for ph, oxygen, secchi_depth, hardness, alkalinity, water_depth, conductivity, air_temperature, water_temperature, current_weather, current_weather_description, previous_weather, previous_weather_description, and chlorine from 31 July 2022 to 12 September 2023.

45.003803, -74.691067

Summary of quantitative results

Guidelines for exceedances are based on: Canada

  • Physical tests

    • Water depth

      Secchi disk (20 cm diameter)

      m

      0.75

      Latest

      1.78

      Average

      Not enough data for trend yet

      Trendlines will appear once >3 datapoints are entered.

  • Chemistry tests

    • Water temperature

      Water Rangers pen-type meter (temperature)

      °C

      22.0

      Latest

      22.55

      Average

      Not enough data for trend yet

      Trendlines will appear once >3 datapoints are entered.

    • pH

      Taylor teststrips (pH)

      7.8

      Latest

      7.65

      Average

      Not enough data for trend yet

      Trendlines will appear once >3 datapoints are entered.

      What do these colours mean?

    • Oxygen

      Chemetrics ampoules (dissolved oxygen)

      mg/L

      5.5

      Latest

      6.75

      Average

      Not enough data for trend yet

      Trendlines will appear once >3 datapoints are entered.

      What do these colours mean?

    • Hardness

      Taylor teststrips (hardness)

      ppm

      100.0

      Latest

      100.0

      Average

      Not enough data for trend yet

      Trendlines will appear once >3 datapoints are entered.

    • Conductivity

      Water Rangers pen-type meter (conductivity)

      μS/cm

      301.0

      Latest

      301.85

      Average

      Not enough data for trend yet

      Trendlines will appear once >3 datapoints are entered.

    • Chlorine

      Taylor teststrips (chlorine)

      ppm

      0.0

      Latest

      0.0

      Average

      Not enough data for trend yet

      Trendlines will appear once >3 datapoints are entered.

    • Alkalinity

      Taylor teststrips (alkalinity)

      ppm

      120.0

      Latest

      120.0

      Average

      Not enough data for trend yet

      Trendlines will appear once >3 datapoints are entered.

    • Air temperature

      Water Rangers (stream thermometer) and/or weather app

      °C

      18.5

      Latest

      20.25

      Average

      Not enough data for trend yet

      Trendlines will appear once >3 datapoints are entered.

View observation list ›

About this location

  • Water body type Lake
  • Dataset Upper St. Lawrence River Volunteer Monitoring, River Institute
  • Data collector Emma Ehrenfeld
  • Location description Short inlet cutting into the island, surrounded by cow pasture (cows regularly cross the inlet to access the other side). Rocky at mouth, becomes more and more soft sedimented the further in the inlet travelled. Mind potential bacteria or pathogens in the water due to cow manure.