Dataset

Ravensbourne Catchment Improvement Group's Water Quality Working Group

Dataset by Thames21

Dataset summary

Observations

  • 12 September 2025

    Kyd Brook Hawkswood Estate by Kirsty Blackman

    There has been heavy rain fall which has swept a huge oak branch along the brook and collecting debris, but the water level is still low and steady. On a positive note the heavy rain has cleared a lot of the silt from the stones on the base. This site is also riverfly monitoring site, which I monitor with Brian Knight, it wasn't a very good tally again today but there are many surface water overflows (S.W.O) upstream and downstream for that matter plus a C.S.O/ combined sewer overflow quiet a way upstream from this point. Gammarus 17 R.M.I Score =2 + 5 leeches

  • 5 September 2025

    Chinbrook wetlands outlet pond by Anne Slater

    Duckweed very abundant

  • 5 September 2025

    Chinbrook wetlands inlet pond by Anne Slater

    Duckweed is very abundant. Dumped e-bike in water nearby

  • 1 September 2025

    East Kyd Brook by Kirsty Blackman

    On a positive note, I noticed a small shoal of fry, possibly stickleback around this area. Unfortunately unable to take a photo.

  • 1 September 2025

    Kyd Brook C.S.O by Kirsty Blackman

    The EDM showed that the last the last storm overflow discharge was on 29th August 2025 from 7:30-10:30am = 3 hours

  • 20 August 2025

    Kyd Brook S.W.O downstream by Kirsty Blackman

    There have often been pollution problems with this S.W.O, which mainly meant that there were obvious signs of laundry detergent, probably due to a misconnection. This had been reported and investigated by Thames Water(the local water authority for this area) but unfortunately nothing changed. Then on 4/7/25 the pollution took a dramatic change as it included sewage, fortunately the environment agency had a new way of reporting via their website. Thames water investigated finding that one of the surface water drains had a crack in it and one of the sewage drains had collapsed in places and somehow sewage was seeping into the surface water drain and discharging from the S.W.O into Kyd Brook. Thames water were in a residential street for several weeks repairing the drains meaning that some very understanding residents have had their back gardens excavated for the pipes to be replaced and relined in various places before moving upstream in the pipes to discover any more problems. Currently there is a temporary halt to works whilst another resident was away and will commence soon. In the meantime in another house there is a temporary bypass inplace meaning that the surface water drain is connected to the sewer drain. We are hoping that this will be resolved soon and there will be no more pollution issues with this site.

  • 20 August 2025

    Kyd Brook S.W.O upstream by Kirsty Blackman

    I am pleased to say that it looks like Thames water have finally resolved the pollution issues that have dogged this S.W.O since I started water monitoring. Only time will tell for sure but I have my fingers crossed.

  • 20 August 2025

    Kyd Brook C.S.O by Kirsty Blackman

    There has been no discharge from the C.S.O since 21/7/25 and the weather has been very dry. The water level is low but clear.

  • 12 August 2025

    Chinbrook wetlands inlet pond by Anne Slater

    Phosphate reading was flashing 2.5

  • 8 August 2025

    Kyd Brook Hawkswood Estate by Kirsty Blackman

    Water levels are very low and slow moving, the base is covered in lots of silt. This site is also a riverfly monitoring site, today's results are Gammarus x 6 RMI Score = 1 Plus stickleback/fry x 1, damsel flies x 2

  • 6 August 2025

    Kyd Brook S.W.O downstream by Kirsty Blackman

    Pleased to report that there are no signs of pollution. Thames water are still in a residential road nearby where the drains had collapsed causing sewage to enter Kyd Brook. The tanker lorry has now gone but gardens have been dug up for new pipes to be fitted.

  • 6 August 2025

    Kyd Brook C.S.O by Kirsty Blackman

    The E.D.M shows that the last discharge was on the 21/7/25 19:15 - 20:00 = 45 mins.