Dataset

Ravensbourne Catchment Improvement Group's Water Quality Working Group

Dataset by Thames21

Dataset summary

Observations

  • 12 November 2024

    Kyd Brook C.S.O by Kirsty Blackman

    C.S.O ( combined sewer overflow) which discharges raw untreated sewage into Kyd Brook, just ahead of water testing site, has a E.D.M ( eveng duration monitor) which showed that the last discharge was on 9/11/24 from 9am - 11:15 = 2 hrs 15 mins.

  • 8 November 2024

    Kyd Brook Hawkswood Estate by Kirsty Blackman

    This site is also a riverfly monitoring site. November's results are 1 leech 7 gammarus 1 hog louse Riverscore = 1

  • 29 October 2024

    Kyd Brook C.S.O by Kirsty Blackman

    There is a known C.S.O (combined sewer overflow) a little further upstream from this testing site, which also has an E.D.M( event duration monitor) that lets you know when there is sewage discharging into Kyd Brook. I have noticed that the timings of the E.D.M are not necessarily always accurate on previous occasions and at best can be used as a guide. Here is an example, please see the above screenshots, all taken the same day. One shows the S.W.O discharging on 14/10/24 at 07:06am having started at 05:30am, duration 1hr 36 mins The next shows the S.W.O discharging on 14/10/24 starting at 07:00 and still discharging at 7hrs 8 mins The last screenshot shows the S.W.O discharging on 14/10/24 at 07:00 and stopping at 13:45 duration 6hrs 45mins. These all overlap.

  • 27 October 2024

    Chinbrook wetlands outlet pond by Anne Slater

    No noticeable smell

  • 27 October 2024

    Chinbrook wetlands inlet pond by Anne Slater

    Noticeable ammonia-like smell

  • 23 October 2024

    Boundary stream between Old Dunstonians Sports Ground and neighbouring sports ground. by Malvin Mitchell

  • 17 October 2024

    Mill Vale Outfall by Jeff Royce

    Low flow but steady from outfall. No visible pollution.

  • 11 October 2024

    Kyd Brook Hawkswood Estate by Kirsty Blackman

    This site is also a riverfly monitoring site Gammarus = 53 Leeches = 2 Olive = 1 Riverfly score =3