Mechanical opening - 1868 to 1930 (Horse drawn scoops)
Implemented for a defined
Description of option
The manual opening of the lake at Taumutu at least annually using horse scoops.
Opening, closing, and lake level control description
Between 1913 and 1947 there were an average of 1.6 openings/year to lower lake levels.
above 300 cumecs
Between 1913 and 1947 the average opening cost was 333+ pounds (Dalmer, 1970).
Fish passage benefit rating
Potential running impacts or benefits
Aim was to lower lake level to alleviate potential flooding of farmland.