Envoloji Mühendislik Çevre Teknolojileri A.Ş.

Fish Pass Design

Ecological and hydraulic design that keeps fish migration continuous past river structures.

Stepped-pool fish pass next to a river weir

Fish Pass Design

We develop fish pass solutions that reduce the impact of river structures on the continuity of fish migration and movement.

The target species’ swimming performance, migration season, flow regime, head differences and structural conditions are assessed together to select the appropriate pass type and hydraulic criteria. The design process integrates ecological needs with engineering requirements to maintain aquatic habitat connectivity and support the persistence of fish populations.

Scope of service

  • Analysis of target species’ swimming performance and migration season
  • Assessment of flow regime, head differences and structural conditions
  • Selection of the appropriate pass type and hydraulic criteria
  • Integration of ecological and engineering requirements

Related topics

  • fish pass design
  • fish passage
  • aquatic connectivity
  • flow regime

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