Specialist reservoir safety and engineering consultancy

Providing technical expertise to all types of reservoir owners. Whether you are a private owner or major water company we are here to help.

Cilcain Reservoirs: Discontinuance

Reservoir discontinuance: decommissioning and removing a reservoir can be a complex process involving many specialisms. Stillwater Associates has built significant experience over a number of years in coordinating and providing engineering input for several discontinuance projects in England and Wales. The discontinuance of two historic water supply reservoirs at Cilcain in North Wales was completed in 2023.

Recent projects

Discover some of the recent projects carried out by Stillwater Associates.

From the initial feasibility studies through to the completion of major reservoir safety upgrades our projects page highlights some of the amazing projects that Stillwater Associates has been involved in and showcases our technical expertise in reservoir safety.

Find more

Dinas Reservoir
Dam Safety Risk Assessment Workshop Scope of work: Participation by Stillwater Panel Engineers in 2-day workshop to identify potential trigger events and associated failure modes for Dinas Dam. Use of event tree analyses to quantify the annual probability of failure of each credible failure mode identified

Buckshole Reservoir
Reservoir Safety Works Scope of work: ALARP assessment and scheme delivery from concept to completion for a new spillway channel and emergency drawdown siphon outlet

Stillwater Associates is currently working for over
200 clients on more than 350 reservoirs
throughout the UK and internationally.

Career opportunities at Stillwater

Stillwater Associates is growing. We need more technically strong amazing engineers to join our team. We are looking for up to four new reservoir safety engineers from graduate engineers to principal engineers, so there is a role for everyone! Please click below for more information.

Graduate Civil Engineer (Dams & Reservoirs)
Civil Engineer (Dams & Reservoirs)
Senior Engineer (Dams & Reservoirs)
Principal Engineer (Dams & Reservoirs)

Meet the Stillwater team

Stillwater Associates has built a reputation for providing a responsive first class service to its full range of clients. We offer broad expertise in all aspects of reservoir safety from project planning and management, to technical advice, reservoir supervision and inspections, and engineering design right through to supervision of project delivery on site. We always employ the right people with the relevant expertise. Our team covers the entire UK with engineers who thrive on working with and supporting clients from private estates to water utilities to global companies.

"Great job to showcase!"

Cilcain Reservoir Discontinuance: Dŵr Cymru Welsh Water