Observation

Riverside Park (Upstream)

Dollis Brook

River or stream

November 4, 2025 at 9:45 AM

QA status: Reviewed: quality check complete

Weather observations

  • Current weather

    Community scientist interpretation

    • Sunny
    • Cloudy
    • Windy
  • Weather in the past 24hrs

    Community scientist interpretation

    • Sunny
    • Cloudy
    • Rainy
    • Windy

Qualitative readings

  • Clarity

    Community scientist interpretation

    Clear

  • Water use

    Community scientist interpretation

    other

  • Colour

    Community scientist interpretation

    Colourless


Plants/wildlife

  • Algae

    Community scientist interpretation

    None


Issue reporting

  • Odour

    Community scientist interpretation

    None

  • Pollution sources

    Community scientist interpretation

    Residential discharge, Urban/road discharge

  • Water surface

    Community scientist interpretation

    Natural debris


Physical tests

  • Water flow

    Community scientist interpretation

    Steady

  • Water level

    Community scientist interpretation

    Low


Chemistry tests

  • Ammonia

    Hanna checker (ammonia - medium range)

    0.13 mg/L

  • Conductivity

    Other pen-type meter (conductivity)

    792 μS/cm

  • Water temperature

    Other thermometer

    13.7 °C

  • Phosphate

    Hanna checker (phosphate - low range)

    0.90 mg/L

  • Air temperature

    Other thermometer

    13.1 °C

  • Turbidity

    Turbidity tube (45 cm)

    ≤ 12 NTU


Notes

Testers Jude and Nicky Recent rain and dilution factor. Still quite high gravel banks so deeper water pooled left hand side facing downstream. Running water right hand side from which the sample collected. ARMI Score 7