Observation

East Holland River at Aurora Community Arboretum (AFLC)

Lake Simcoe

River or stream

April 19, 2025 at 2:49 PM

QA status: Reviewed: quality check complete

Weather observations

  • Current weather

    Community scientist interpretation

    • Cloudy
    • Windy

  • Weather in the past 24hrs

    Community scientist interpretation

    • Cloudy
    • Rainy
    • Windy

Chemistry tests

  • pH

    Taylor teststrips (pH)

    8.0

    Regulatory

  • Oxygen

    Chemetrics ampoules (dissolved oxygen)

    9.0 mg/L

    Regulatory

  • Hardness

    Taylor teststrips (hardness)

    150 ppm

  • Alkalinity

    Taylor teststrips (alkalinity)

    160 ppm

  • Conductivity

    Water Rangers pen-type meter (conductivity)

    1,123 μS/cm

  • Air temperature

    Water Rangers (stream thermometer) and/or weather app

    15.5 °C

  • Water temperature

    Water Rangers pen-type meter (temperature)

    21.8 °C

  • Chlorine

    Taylor teststrips (chlorine)

    ≤ 0 ppm

Notes

On the water surface: None In the immediate surroundings: Residential discharge/other Evidence of water uses: none Algae? Not sure Water flow: surging Estimated water level: high Water colour: clear Clarity: clear Odour: sewage