Key Data of the Screen Systems at the Willstätt, Unkelmühle, Kemnade and Öblitz Hydropower Sites

 
Key data of the screen systems at the Willstätt, Unkelmühle, Kemnade and Öblitz hydropower sites

Ecologic Institute & Ingenieurbüro Floecksmühle | CC BY 4.0

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Key Data of the Screen Systems at the Willstätt, Unkelmühle, Kemnade and Öblitz Hydropower Sites

Examples of screen bar shapes for fish protection screens at hydropower sites

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Ecologic Institute 2021: Key data of the screen systems at the Willstätt, Unkelmühle, Kemnade and Öblitz hydropower sites. Infographic published in: Keuneke, Rita 2021: Technical functionality of large fish protection screens confirmed in practice. Operational experience with large screen systems. Aachen: Ingenieurbüro Floecksmühle GmbH.

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To obtain information on the technical functioning of the realised sites, interviews were conducted with the operators of four sites (2020). The experiences are extremely site-dependent. This infographic presents the key data of the screen systems at the Willstätt, Unkelmühle, Kemnade and Öblitz hydropower sites. The infographic is part of the fact sheet "Technical Functionality of Large Fish Protection Screens Confirmed in Practice."

The infographic is published under a creative commons license CC BY 4.0. That means it can be copied and redistributed in any medium or format and for any purpose as long as appropriate credit to the authors (Ecologic Institute, Ingenieurbüro Floecksmühle GmbH, Aachen) is given.

Technical functionality can be guaranteed for all realised screen types and sizes

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German
English
Credits

Media format: coloured infographic for a digital fact sheet
Copyright: CC BY 4.0
Content: Rita Keuneke (Ingenieurbüro Floecksmühle GmbH)
Graphic design: Lena Aebli

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Published in
Fact Sheet 04: Technical Functionality of Large Fish Protection Screens Confirmed in Practice
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Keywords
Water Framework Directive, WFD, river, nature conservation, biodiversity, energy, hydropower, fish, migration, watercourse, connectivity, restoration, hydromorphology, protection
Europe, Germany, Austria, Switzerland
infographic, visualization, illustration, creative commons, fact sheet
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Fish protection screens in Germany with currently highest discharge per screen panel

Ecologic Institute & Ingenieurbüro Floecksmühle 2021 | CC BY 4.0

As a result of intensive and ongoing discussions in the German Participatory Forum on Fish Protection and Downstream Migration, a mutual understanding was reached in 2014, up to which screen size a functioning mechanical fish protection and bypass system including the... Read more

Ecologic Institute 2021: Fish protection screens in Germany with currently highest discharge per screen panel. Infographic published in: Keuneke, Rita 2021: Technical functionality of large fish protection screens confirmed in practice. Operational experience with large screen systems. Aachen: Ingenieurbüro Floecksmühle GmbH.

PublicationInfographicFlow-optimised Screens Serve Fish Protection and Power Production
 
This infographic shows different cleaning elements of the screen cleaning machine, that can either be designed as rakes that grip between the bars, or as brushes or polymer strips that rather sit on the outside of the bar and brush along it.

Ecologic Institute & Ingenieurbüro Floecksmühle 2021 | CC BY 4.0

This infographic shows examples of screen bar shapes for fish protection screens at hydropower sites. Small screen bar spacing for better fish protection also causes the screen to become clogged with debris more quickly, which can impair the operation of the hydropower... Read more

Ecologic Institute 2021: Flow-optimised screens serve fish protection and power production. Examples of screen bar shapes for fish protection screens at hydropower sites. Infographic published in: Keuneke, Rita 2021: Technical functionality of large fish protection screens confirmed in practice. Operational experience with large screen systems. Aachen: Ingenieurbüro Floecksmühle GmbH.