Observation

Riverside Park (Upstream)

Dollis Brook

River or stream

Quality check pending

November 4, 2025 at 9:45 AM

View trends at this location

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 flow

    Community scientist interpretation

    Steady

  • Water level

    Community scientist interpretation

    Low

  • Algae

    Community scientist interpretation

    None

  • Odour

    Community scientist interpretation

    None

  • Pollution sources

    Community scientist interpretation

    Residential discharge, Urban/road discharge

  • Water use

    Community scientist interpretation

    Other

  • Colour

    Community scientist interpretation

    Clear

  • Water surface

    Community scientist interpretation

    Natural debris

Chemistry tests

  • Ammonia

    mg/L

    Hanna checker (ammonia - medium range)

    0.13

  • Conductivity

    μS/cm

    Other pen-type meter (conductivity)

    792

  • Turbidity

    NTU

    Turbidity tube (45 cm)

    12

  • Water temperature

    °C

    Other thermometer

    13.7

  • Phosphates

    mg/L

    Hanna checker (phosphates - low range)

    0.90

  • Air temperature

    °C

    Other thermometer

    13.1

Recent photos

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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

Land use
Bank vegetation