Registration Report Overview A comprehensive introduction to fish passage design, combining biological, hydraulic, environmental, and engineering considerations for dams and water control structures. Audience Design engineers, aquatic biologists, dam owners, regulators involved in the design and/or permitting of dams where fish passage is a requirement Details Objective Provide participants with current and relevant information on state-of-practice for fishway design, as it pertains to dam design and rehabilitation. Brings together aspects of engineering and environmental designs Agenda Overview of Regulatory Context Biological considerations for design of fish passage structures Fish Passage Design Process Description The need to provide effective upstream fish passage has become increasingly recognized by Canadian regulators and dam owners as an essential component in the planning of new dams, hydraulic structures, and the rehabilitation of aging infrastructure. As pressures on aquatic ecosystems intensify and awareness of habitat connectivity grows, the design of fish passage facilities has evolved into a multidisciplinary effort that requires close integration between biological science and engineering practice. Ensuring that structures support natural migration patterns while meeting operational and regulatory requirements demands a comprehensive and collaborative design approach. This full day workshop offers participants a detailed introduction to the fundamental principles, methods, and considerations involved in the development of upstream fish passage systems. Key biological concepts, such as species-specific swimming performance, behavioural tendencies, and migratory timing, will be presented alongside engineering and hydrological requirements that influence the selection and configuration of fishways. The workshop will also provide an overview of watershed processes, flow regimes, and hydraulic characteristics that are critical to the successful design and long-term performance of fish passage structures. Fish Passage 101 builds upon and expands the nature-like fishway workshop delivered at the 2025 CDA Conference. Based on participant feedback, this updated workshop now covers the full range of commonly used fishway types. Interactive breakout sessions will provide opportunities for hands-on learning, enabling participants to develop conceptual designs using an example scenario, evaluate design options, and gain practical experience with the design of a typical fishway.