"He has demonstrated a high degree of innovation, perseverance and intelligence in resolving complex issues, and the company and local community has benefited from his strong interpersonal skills as he seeks to find solutions which meet everyone's needs," Ms Hyslop said.
But Mr Dann paid tribute to "two extraordinary women" who had also contributed greatly to the Last Chance scheme.
His wife, Cathy Dann, was the first secretary of the LCIC, as well as the inaugural secretary of the Earnscleugh Irrigation Company, and had also served as the secretary and financial officer of the Last Chance Community Drinking Water Scheme for the past 25 years.
Allison Sutton, of Muttontown, near Clyde, had served as the secretary and financial officer of the LCIC for the past 25 years, and served for even longer as the secretary and financial officer of the Manuherikia Irrigation Society.
The LCIC uses snowmelt from the Old Man Range for irrigation, delivering water to farms north of the range through a water race network originally built in gold-mining days and through natural creeks.
Two concrete arch dams — Conroys Dam and Butchers Dam — were built during the depression to store water for the scheme.
An idea of Mr Dann's was then to retake run-off flood irrigation water from Butchers Dam irrigators and pipe it through a hill and across a valley to the lower Conroys catchment to supplement the supply.
He successfully negotiated to have the Crown fund this "link race" pipe as part of the Last Chance settlement, and also promoted and arranged the construction of a storage dam to feed water to this Link Race.
Mr Dann was previously a science teacher and deputy principal at Dunstan High School.
He is still the manager of the Last Chance Community Drinking Water Scheme.
He said he was "humbled" and "surprised" by the Irrigation New Zealand award, and acknowledged the role of other Last Chance directors, saying the scheme had been a "team effort".
It had been "exciting" developing the Last Chance scheme, and it had a solid future, Mr Dann said.
pam.jones@odt.co.nz