Event Title

Concurrent Sessions C: Integrating Recreation and River Safety with Fish Passage - Canoe and Kayak Passage at Roughened Channel Fishways

Location

Agriculture Leaders Theater, Oregon State University

Start Date

26-6-2013 11:00 AM

End Date

26-6-2013 11:20 AM

Description

The planned or potential use of roughened channel fishways by boaters requires attention to design to prevent common river hazards to recreationalists and their non-motorized craft. The focus of this paper is on the synergistic and seemingly opposing design objectives encountered when considering an integrated fish and boat passage structure. The paper identifies and provides examples of various hazards such as overly retentive hydraulics, excessive drops or steep rapids, pinning and broaching hazards, and strainers. Recommendations on the placement of woody debris for habitat creation in low velocity regions are explained as well as alternative methods for creating velocity breaks in fast moving regions. The impact of design flows on the steepness and rapids and the spacing of recovery pools are discussed. The importance of rock placement details and quality control in construction to avoid hand and foot entrapment is also covered. The need for ancillary improvements such as portage paths, warning signs, put-in and take outs are outlined. The paper treats the recreational whitewater boater as a target species where the facility is located on a water body they are known to frequent or could be attracted to by the creation of a naturalistic fish passage.

Comments

John Anderson, R.A. Mr.Anderson is an architect and former whitewater slalom competitor turned whitewater designer. John has specialized in whitewater recreation since 1991. He has worked with over 30 communities on whitewater recreation projects, dam removals and river restorations. Whitewater recreation projects include creative solutions to barriers to river boating: dam by-pass courses, streambed modifications and dam modifications or removal. John is a former whitewater slalom competitor on the U.S. Whitewater Team. As a competitor he visited and studied major artificial whitewater courses in Europe and in North America. He is a bronze medalist in two-man canoe in the 1988 Pre-Worlds team event and national champion in the doubles canoe-mixed class.

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Jun 26th, 11:00 AM Jun 26th, 11:20 AM

Concurrent Sessions C: Integrating Recreation and River Safety with Fish Passage - Canoe and Kayak Passage at Roughened Channel Fishways

Agriculture Leaders Theater, Oregon State University

The planned or potential use of roughened channel fishways by boaters requires attention to design to prevent common river hazards to recreationalists and their non-motorized craft. The focus of this paper is on the synergistic and seemingly opposing design objectives encountered when considering an integrated fish and boat passage structure. The paper identifies and provides examples of various hazards such as overly retentive hydraulics, excessive drops or steep rapids, pinning and broaching hazards, and strainers. Recommendations on the placement of woody debris for habitat creation in low velocity regions are explained as well as alternative methods for creating velocity breaks in fast moving regions. The impact of design flows on the steepness and rapids and the spacing of recovery pools are discussed. The importance of rock placement details and quality control in construction to avoid hand and foot entrapment is also covered. The need for ancillary improvements such as portage paths, warning signs, put-in and take outs are outlined. The paper treats the recreational whitewater boater as a target species where the facility is located on a water body they are known to frequent or could be attracted to by the creation of a naturalistic fish passage.