Observations
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19 December 2025
Brent Cross by Dianne Murphy
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11 December 2025
Chandos Park (Downstream) by Trevor Steeples
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11 December 2025
Chandos Park (Upstream) by Trevor Steeples
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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
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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
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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
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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
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9 December 2025
Riverside Park (Downstream) by Judith Howlett
Observational data only to show height of water levels after a period of rain
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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
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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
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9 December 2025
Wealdstone Brook Woodcock Park Mural Bridge by John Poole
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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
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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
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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
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3 December 2025
Folly pre confluence by Judith Howlett
Down and upstream view at Confluence. Water running steadily after recent rain
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3 December 2025
Outfall at RMI Site by Judith Howlett
Water running from Outfall after recent rain, dilution factor. Some white foam in Outfall as in photo. Recently Thames Water still investigating as green dye at bottom of Outfall witnessed by a member of the public, don't know from where at this time, will try to find out
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30 November 2025
Brent_41 Union Canal Towpath by Mitch Goldman
1. Houseboats moored nearby. 2. Some floating leaves.
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30 November 2025
Clitheroe Island - Boston Manor Park by Mitch Goldman
1. Oily sheen on the surface. (Hard to see in the photos, but whenever the bucket or anything disturbed the surface of the water you could see it.)
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30 November 2025
Duckweir - Clitheroe Island - Boston Manor Park by Mitch Goldman
1. Houseboat moored nearby. 2. Oily surface - see photos. 3. Leaves and some residntial rubbish - cans, plastics.
