Open channel to Lake Forsyth then pier/mole outlet to sea
Kaituna end of Lake Ellesmere to Lake Forsyth then an opening from Lake Forsyth to the sea.
Description of option
A canal from Lake Ellesmere to Lake Forsyth was proposed, with a permanent pier outlet structure from Lake Forsyth out into the sea. See designs/drawings attachment for more detailed description.
Opening, closing, and lake level control description
Allows continuous discharge. Requires a higher lake level to obtain suitable hydraulic gradient to Lake Forsyth.
1878 provisional cost: Lake Forsyth outlet pier structure + 230 chains of canal = c. 160,000 pounds
Fish passage benefit rating
Potential running impacts or benefits
Te Waihora water would assist in maintaining opening. Construction of 4km canal could provide opportunity to develop
rowing course. However, less opportunity to maintain saltwater intrusion in Te Waihora (Gibbs & Norton, 2012).