Save Aldenham Reservoir

Save Aldenham Reservoir Contact information, map and directions, contact form, opening hours, services, ratings, photos, videos and announcements from Save Aldenham Reservoir, Elstree.

This page is managed by Elstree & Borehamwood Residents Association
The dam its surface area is 55 acres It was built between 1795 and 1797 by the Grand Junction Canal Company, to control the water levels in the River Colne ,

30/06/2026

Comments by a Labour councillor obtained by this newspaper suggest votes for a planning application on green belt land near a reservoir could have been influenced ahead of a hearing.

19/03/2026

🔴🔴🔴🔴🔴🔴🔴🔴🔴🔴

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.

Address

Elstree
WD63BA

Website

Alerts

Be the first to know and let us send you an email when Save Aldenham Reservoir posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Contact The Organisation

Send a message to Save Aldenham Reservoir:

Shortcuts

Share