If you are able, please come along to the next Local Area Forum council meeting to hear about the Aquadrome, in particular Woodland Path and Ebury Play area and ask questions or voice your concerns. This meeting will be held in Penn Chamber, Three Rivers House, Northway, Rickmansworth WD3 1RL (location details).
The RDRA Chairman requested a Freedom of Information request on the following questions:
When (on what date) was the decision to close the Woodland path taken? 9th February 2024
Who was responsible for taking that decision? Associate Director for Environment
When was the Environmental Agency Asked/Commissioned to do the Hydrological Survey? The EA has not been asked nor commissioned by TRDC to do a Hydrological Survey. Under their responsibilities for water management the EA have been in the process of updating their Flood Modelling for the Upper River Colne, which will inform a Hydrological Study of the Aquadrome commissioned to JBA by TRDC in 21 March 2024
When was the Environmental Agency’s Hydrological Survey Report received by the Three Rivers District Council? The Council initially received the EA updated Upper River Colne Flood Model ( it is assumed that this is what the enquirer is referring to) on 2nd October 2025 with a further updated version received by the council on 8th October 2025
When is the Environmental Agency’s Hydrological Survey Report being published and is in the public domain and available for public scrutiny? That is a question that the requester should pose to the EA. If this question in fact refers to the council commissioned Hydrological Study it is expected that, as reported to the councils Climate Change and Leisure Committee on 15th October, that this will be complete by the end of the calendar year and published in early 2026.
When is the TRDC scheduling to implement the Environmental Agency’s Hydrological Survey Report Recommendations? EA Upper Colne Flood Model does not contain recommendations, it is a model. Further details on this matter have been published in the report to TRDC Climate Change and Leisure Committee of 15th October and can be found on the council website: Agenda for Climate Change and Leisure Committee on Wednesday, 15th October, 2025, 7.30 pm – Modern Council item 11a.
This meeting was attended by multiple local residents. The next Local Area Forum is 13th November.
2. Ebury Play Area
As we are all aware, during the construction of the bridge and renovation of the play area, Japanese Knotweed was brought in to the area with the top soil. A 16-week Remediation Plan is still being negotiated with the contractor in charge of renovating the Play Area. There are 7 different ways that Knotweed can be treated: chemical methods or manual digging methods. In order for the Remediation Plan to start, the most appropriate method needs to be agreed and vetted by the Environment Agency. Certainly the chemical methods are deemed problematic in a place where children will play and next to the River Colne.
One resident said that the Aquadrome was the jewel in the crown of Rickmansworth, that all residents loved it and to see it in rack and ruin – a jungle – is devastating. Another resident requested that the council sue whoever was responsible for the situation.
Ebury Play Area is a jungle
One resident suggested the Aquadrome was “littered with Knotweed and because it’s not a poisonous plant”, the Play Area should be strimmed and opened up for use. This can’t happen because the contractor is still in possession of the site. And the council confirmed that the Aquadrome is not littered with Japanese Knotweed but there are certain areas where treatment is needed every year. Paula Hiscocks suggested that this yearly treatment is all that is needed in this instance for the play area. The council said that they wanted a permanent solution for this area.
One resident asked why all communications about this issue are not in the public domain. But the council said some things that aren’t yet negotiated cannot be in the public domain yet.
So, although this is the same thing the council said 4 months ago, we suspect they can’t tell us anymore because they might be in some sort of legal situation but we hope that they’re getting a good deal, on our behalf!
3. Aquadrome
One resident reported that people had set up tents in the Aquadrome with tent pegs, i.e. flouting the no-dig rule. The council said that the restrictions placed upon the Aquadrome, due to asbestos being found, can be overcome by using vehicles instead of tents and that whoever needs to can always talk with officers of the council.
The council said the annual Boat Rally would like to expand into areas of the Aquadrome and these areas are being investigated.
4. Woodland Path
This path is still closed because a report denounced it as “structurally unsound”. They are awaiting on a FRAPP but this in turn is waiting on new Environment Agency modelling to determine future flooding. The council meet with the Environment Agency weekly to discuss this issue but this new model is always late – the next launch date is set for 29th September but we’re not holding our breath! Once the FRAPP and modelling are in place then the following items need to be agreed for a durable and long-standing path, that will probably cost 6 figures:
The route the new path will take
The materials used
The construction method used.
Let’s all hope the Ebury Play Area contractors aren’t used!
As the meeting drew to a close, there was a consensus among residents that there wasn’t enough time to hear all the questions and queries from locals about the Ebury Play Area/Aquadrome/Woodland path. The council said they hold regular meetings in Penn Chamber, Three Rivers House, Northway – here are the next ones from the TRDC website:
Connecting Three Rivers (formerly Local Strategic Partnership and Community Safety Board) meeting on 25th September, 10am
Audit Committee meeting on 25th September, 7.30pm
Local Plan Sub-Committee meeting on 8th October, 7pm
General Public Services and Community Engagement Committee meeting on 14th October, 7.30pm – future agenda.
Climate Change and Leisure Committee meeting on 15th October, 7.30pm
**Local Area Forum** meeting on 13th November, 7.30pm – future agenda.
Full Council meeting on 21st October, 7.30pm – future agenda.
Agendas are usually set after the preceeding meeting. Anyone can attend any meeting to observe only. Questions from members of the public must be submitted in writing beforehand. However, we can freely get involved during Local Area Forum meetings. To suggest topics for any meeting agenda, submit questions for discussion or to request to speak/present, please email: committeeteam@threerivers.gov.uk.
I attended 3RDC’s local area forum on 4/3/25, and asked the text below. I’m unable to attend the [RDRA AGM] meeting tonight, 17/6/25;
I am speaking against the Rickmansworth Aquadrome Management Plan because it does not address the following points.
The Rickmansworth Aquadrome woodland path has been closed for over a year now, due to professional advice received by TRDC that says it is “unsafe”. There has been no evidence issued by TRDC to verify that statement.
TRDC has said the path remains closed, awaiting the issue of a hydrological report, possibly by the Environmental Agency. It is not usual for a hydrological report to take over a year to be investigated, drafted and issued.
The existing hydrological assets already installed in the Aquadrome – identified and located using what3words locational app, and issued to TRDC in November 2024 have not been maintained by TRDC for many years. Recent correspondence from TRDC states they are now considered no longer fit for purpose.
Would TRDC therefore, without further prevarication issue the supporting evidence that shows by which measure the woodland path is considered “unsafe” and how it fails to meet that measure?
Would they also categorically state when, and to which organisation the alleged hydrological report was commissioned, and demonstrate by what measure the existing hydrological assets are no longer fit for purpose, regardless of if they had been maintained?
Failure to comply with these requests will leave TRDC in an invidious position, in barring the Rickmansworth public from one of its most bio-diverse pedestrian routes for reasons that they are unable to show any supporting evidence.
Please overhaul the hydrological assets as previously noted; commit to maintaining them; and re-open the woodland path.
RDRA response:
Many thanks for this post. We can file a ‘Freedom of Information’ request to get TRDC to respond.