Dataset

Brent Catchment Water Quality Working Group

Dataset by Thames21

Dataset summary

Observations

  • 20 December 2025

    Falcon Way bridge - Lindsay Drive roundabout by John Poole

    This was a cold morning, some heavy rain two days previously, the water was clear and odour free. I have complete two videos of my visit which can be viewed on my YouTube Channel @johnpoole4199.

  • 10 December 2025

    Outfall at RMI Site by Judith Howlett

    Sampled again as RMI day. Water running from Outfall was clear, but a pool of water sitting in body of Outfall with a cloudy sheen and foam

  • 10 December 2025

    Riverside Park (Upstream) by Judith Howlett

    RMI Day Score 7 Water levels still high after recent rainfall, sample appeared slightly brown in appearance Photos show Nicky kick sampling. Amazing large Cased Caddis today x 10 found amongst the leaf litter in the sample

  • 9 December 2025

    Riverside Park (Upstream) by Judith Howlett

    Observational data only to show raised water levels in the Dollis post a period of rainfall

  • 9 December 2025

    Folly pre confluence by Judith Howlett

    Observational report only post rainfall and photo shows the Folly/Dollis Brooks flowing together at the Confluence. Water colour normal following heavier rainfall as Brooks start in rural areas and field wash off from clay soils

  • 9 December 2025

    Riverside Park (Downstream) by Judith Howlett

    Observational data only to show height of water levels after a period of rain

  • 9 December 2025

    Brook Farm Open Space by Judith Howlett

    Observational data only of raised water levels in the Dollis. Colour changes normal after heavy rain, Dollis starts in rural surroundings and wash off from fields on clay soil

  • 9 December 2025

    Whetstone Stray by Judith Howlett

    Observational report only post rain and raised water levels along the Dollis. Upstream and downstream view. 3rd picture Upstream where recent T21 River Restoration has taken place and water surging over natural debris in Brook

  • 9 December 2025

    Wealdstone Brook Woodcock Park Mural Bridge by John Poole

  • 5 December 2025

    Riverside Park (Upstream) by Judith Howlett

    Water only slightly brown in appearance post rain and sediment wash down Photos upstream and downstream view

  • 5 December 2025

    Riverside Park (Downstream) by Judith Howlett

    Some washed down sediment in water post rain, water slightly brown in appearance Photos show upstream and downstream view

  • 3 December 2025

    Brook Farm Open Space by Judith Howlett

    Up and down stream views of the Dollis

  • 3 December 2025

    Whetstone Stray by Judith Howlett

    Down and upstream view of the Dollis River Restoration, toe-boarding removal last carried out 8 days ago 25th November 2025 just upstream of this location

Intended audience
Our group or organization, Our community, Government and decision makers, Broad audience/everyone
Intended use
Benchmarking of water body or watershed health, Share and compare results across watersheds., Education and engagement of local communities, Use in resource prioritization and decision making