Observation

St Lawrence river

St Lawrence river

River or stream

May 25, 2025 at 5:00 PM

QA status: Reviewed: quality check complete

Weather observations

  • Current weather

    Community scientist interpretation

    • Sunny
    • Rainy

  • Current weather description

    Community scientist interpretation

    Just finished raining and the sun came out

  • Weather in the past 24hrs

    Community scientist interpretation

    • Sunny
    • Rainy

  • Weather in the past 24hrs description

    Community scientist interpretation

    Mix of rain and sun

Physical tests

  • Secchi depth (clarity)

    Secchi disk (20 cm diameter)

    bottom visible m

  • Water depth

    Secchi disk (20 cm diameter)

    1 m

Chemistry tests

  • pH

    Taylor teststrips (pH)

    7.2

    Regulatory

  • Oxygen

    Chemetrics ampoules (dissolved oxygen)

    10.0 mg/L

    Regulatory

  • Chlorine

    Taylor teststrips (chlorine)

    0.5 ppm

  • Hardness

    Taylor teststrips (hardness)

    100 ppm

  • Alkalinity

    Taylor teststrips (alkalinity)

    80 ppm

  • Conductivity

    Water Rangers pen-type meter (conductivity)

    308 μS/cm

  • Air temperature

    Water Rangers (stream thermometer) and/or weather app

    16 °C

  • Water temperature

    Water Rangers pen-type meter (temperature)

    14.5 °C