It could be placed at various locations along the spit between the lake and the sea.
Description of option
The siphon was proposed as an option which would be continuously running with minimal energy inputs. However, it would require priming to start, gases could condense and accumulate at the crest, there could be a cavitation potential, and the behaviour of the siphon is unknown in the surf zone.
Opening, closing, and lake level control description
Continuous low flows and good opening & closing control but less than ideal lake level control (unless many used). Ends of pipes must always be submerged to operate.
below 50 cumecs
The Siphon needs to be checked regularly for correct functioning.
A pump for priming would be required. Cleaning and general maintenace (cleaning, fixing) is required.
Fish passage benefit rating
Potential running impacts or benefits
The effect of the swells and tides on the behaviour of the siphon are largely unknown. In a heavy swell, a dramatic reduction in available head could stop the flow through the siphon. For low lake levels the hydraulic gradient may also be insufficient.