Save Aldenham Reservoir

19/03/2026

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Strabag UK to Repair Aldenham Reservoir:

Strabag UK has secured a two-year contract from Jewel of Hertsmere Limited to rebuild the Aldenham Reservoir dam in Hertfordshire, an earth-fill embankment about 9 m high, 480 m long and impounding roughly 539,000 m³. Works include constructing a new embankment with an 8 m deep slurry wall, butyl liner and rock armour to address performance concerns and reduce downstream flood risk. The scheme also delivers a new reinforced concrete spillway, stilling basin and weir, plus a replacement footbridge and crest-top public footpath.
Technical Brief

Contract spans a two-year programme of surveys, detailed design and construction starting immediately.
Client is Jewel of Hertsmere Limited, with Strabag UK acting as main design-and-build contractor.
Aldenham Reservoir, built circa 1795 for Grand Union Canal compensation flows, is now a leisure amenity.
Previous remedial works were undertaken but judged insufficient to ensure long-term embankment performance and integrity.
Safety driver is reduction of downstream flood risk to nearby communities from potential dam performance issues.

07/09/2024

The Heritage Grant is a fund available now from The National Lottery Fund for the repair and restoration of Heritage properties exactly such as Aldenham Reservoir for a Dam Rebuild - has application been made by either the Owners or Hertsmere Borough Council ?

07/09/2024

03/08/2024

Update on Aldenham Reservoir.

12/02/2024

https://www.mynewsmag.co.uk/boatyard-wrecked-unfolding-scandal-at-aldenham-country-park-video/

The former boatyard adjoining Aldenham Reservoir has been repurposed as a construction yard in what an informant has described as a “scandal”. A video

20/01/2024

Thanks for all the Community posts on this Page.
However we must move forward!

09/11/2023

Plans for a data centre on "scrubland" next to the M25 have been rejected due to concern over changing the character of the green belt

29/06/2023

Following the Outline Planning Proposal for the Dam Wall Repairs - it will be interesting to see who will be funding the major roadworks - one trusts fully the Developers- and not the local tax payers.

29/06/2023

Regarding the proposed major road works on Watford Road / Elstree Road - wide roading and implementation of ghost island - to facilitate the proposed £13 million industrial warehouse development site on prime Green Belt land ( to enable pay for c £2.6 dam repairs ) which some desk bound numpty suggests poses no problem to c 1240 ++ movements of HGV, vans and cars PER DAY to local residents- who is going to pay for that ??
The local Elstree tax payer ??

23/06/2023

https://www.borehamwoodtimes.co.uk/news/23602879.green-belt-industrial-estate-fund-aldenham-dam-approved/

Plans for a “supersized” industrial estate in the Herts countryside are one step closer to being signed off.