Dyrhoff Ltd

It's the final day at the Hydro '26 show in Bologna, Italy. Visit us at stand no. 24 to see our patented CrestSense rubber dam height and vibration monitoring system or to talk about pneumatic spillway gate technology with our US principal, Obermeyer Hydro.

We’re excited to announce that Dyrhoff will be exhibiting at Clean Currents 2026 taking place September 21–25 in Phoenix, AZ. Visit us at Booth 617 and meet the Dyrhoff team to learn more about our solutions and discuss your upcoming projects and requirements.

Our latest installation at the Ruth Falls hydropower station in Nova Scotia, Canada, has reached another important milestone following the successful installation of our rubber dams across all seven stoplog bays. Each rubber dam measures 1.25m high and 13.4m wide.

Dyrhoff is pleased to feature in the latest ZEK Hydro article on the successful modernisation of the historic Großhesseloher Weir in Munich. Read the full article on the ZEK Hydro website: hydroint.zek.at/projects/his…

While in Slovenia, we took the opportunity to visit our latest project in that country; a 1.0m high, 40.0m wide water-filled rubber dam installed across the River Sava at Hrušica. This dam was installed in 2025.

Last week, we visited the Završnica reservoir in Slovenia with three engineers from the UK. The visit was hosted by Savske Elektrarne Ljubljana d.o.o. In 2018 Dyrhoff supplied four 1.0m high and 7.3m wide Obermeyer spillway gates that were installed on the existing dam spillway.

It is 25 years since we supplied this 2.15m high, 22.0m wide Obermeyer spillway gate to a privately-owned small hydropower project on the River Günz in Günzburg, Germany. That is 25 years of continuous operation and power generation for a satisfied owner.

We have just completed installation of our fourth pneumatically-operated spillway gate in Scotland. The location is near Dubh Loch reservoir on the Riemore Estate in Perthshire. Gate dimensions are 2.6m high and 6.0m wide.

Last week we had the pleasure of welcoming Agência Portuguesa do Ambiente (APA) to our latest project in Portugal. This 1.8m high, 24.0m wide rubber dam was installed in 2025 as part of Reabilitação do Sistema de Açudes na Freguesia de Mosteiros in the Municipality of Arronches.

Our latest installation is in Nova Scotia, Canada at the Ruth Falls hydropower station where we are installing rubber dams in 7 stoplog bays. Each rubber dam is 1.25m high and 13.4m wide. The first two sections have been completed with the remaining five to follow next month.

Plan the year ahead using the new 2026 Dyrhoff wall calendar which features 12 of our recent and past rubber dam and spillway gate projects from Italy to Indonesia and USA to UK. For your free copy, e-mail [email protected].

We have three rubber spillway gate bladders available for immediate delivery due to a cancelled order. These are suitable for a gate with a height of around 1.8m to 2.05m and a width of around 17.5m. Contact [email protected] for further details and pricing.

First inflation of our latest rubber dam installed across the Rio Caia near Arronches in Portugal. The 24.0m wide, 1.8m high air-inflated rubber dam took four days to install. It is our fourth rubber dam in Portugal.

This week, we are back in Europe installing a new rubber dam across the Rio Caia near Arronches in Portugal. The 24.0m wide, 1.8m high rubber dam is inflated by air and is used for diverting water for irrigation/agricultural purposes.

Last week we successfully completed replacement of an ageing Bridgestone rubber dam at a water treatment facility in Winnipeg, Canada. Rubber dam dimensions are 1.2m high and 3.2m wide.

This week we are in Slovenia replacing the rubber membrane for a water-filled rubber dam at MHE Hrušica near Jesenica. The original rubber dam was manufactured by Sava Kranj in the mid 1990s. When completed, the replacement rubber dam will be around 1.0m high and 40.0m wide.

We are on site this week commissioning two rubber dams for the Lock and Dam 14 small hydroelectric project on the Kentucky river in the USA. The 10ft x 52ft downstream rubber dam provides the head for the 3030kw StreamDiver turbines. The upstream rubber dam is used as a cofferdam

Our recruitment drive continues. We are now seeking a Project Engineer and a CAD Technician to work out of our office in Folkestone, Kent. Applicants must have a right to live and work in the UK. Details can be found at: dyrhoff.co.uk/vacancies/

The work to replace two rubber dams on the River Menturus in Indonesia is now complete. Thanks to the local contractor, PT. Parama Adhi Pratama, for carrying out the work. Our next project is replacement of a water-filled rubber dam on the River Sava at Hrušica in Slovenia.

We are recruiting a Purchasing, Logistics and Quality Manager to work in our Folkestone office: dyrhoff.co.uk/vacancies/ Applications to [email protected]