Observation

Riverside Park (Downstream)

Dollis Brook

River or stream

Quality check pending

November 4, 2025 at 9:25 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

    Slow

  • 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)

    0.04

  • Conductivity

    μS/cm

    Other pen-type meter (conductivity)

    755

  • Turbidity

    NTU

    Turbidity tube (45 cm)

    12

  • Water temperature

    °C

    Other thermometer

    13.4

  • Phosphates

    mg/L

    Hanna checker (phosphates - low range)

    0.86

  • Air temperature

    °C

    Other thermometer

    13.1

Recent photos

View more photos ›

Notes

Testers Nicky and Jude Photos showing view upstream and downstream. Rainfall over the last week and dilution effect on phosphate. Temperature mild for time of year