Observation

Fosse MA1

Lac McArthur

Lake

August 13, 2025 at 11:00 AM

QA status: Reviewed: quality check complete

Physical tests

  • Secchi depth (clarity)

    Secchi disk (20 cm diameter)

    6.8 m

Chemistry tests

  • pH

    Taylor teststrips (pH)

    7.6

    Regulatory

  • Chlorine

    Taylor teststrips (chlorine)

    0 ppm

  • Hardness

    Taylor teststrips (hardness)

    0 ppm

  • Alkalinity

    Taylor teststrips (alkalinity)

    40 ppm

  • Conductivity

    Water Rangers pen-type meter (conductivity)

    109 μS/cm

  • Chlorophyll-A

    Fluorometer in µg/L

    0.7 µg/L

  • Phosphate-phosphorus

    Persulfate digestion method (total phosphorus)

    6.6 µg/L

  • Water temperature

    Water Rangers pen-type meter (temperature)

    26.5 °C

  • Dissolved organic carbon

    Infrared detection method

    4.2 mg/L

  • Air temperature

    Water Rangers (stream thermometer) and/or weather app

    26 °C