In September the WRA voted to change its constitution and become an incorporated society so it could apply for grants.
Mr Gardiner said "we were very lucky'' with the speed at which the charities commission changed the Wanaka Residents Association's status.
He said "it became the catalyst for several individuals to make sizeable donations to WRA because they like what we're doing with the project and that made our case to the Central Lakes so much more compelling.''
Central Lakes Trust grants, programme and policy manager Vicci Lawrence said the WRA application clearly met their funding criteria.
"This grant was about responsible access into the environment, native bush restoration and preservation of the whole wetland and there was also an education component providing information on the history of the hatchery and local and native plants as well as providing a commuter route through a part of town.
Mr Gardiner said the Bullock Creek wetlands was still owned by Fish and Game. Once the boardwalk was completed and safety rails were installed he hoped a preliminary opening ceremony would be held in March.
Mr Gardiner said the project could take as long as 10 years to finish but men and women carrying out Department of Corrections community service sentences at the site most Saturdays this year had accelerated the clearing of weeds and broom on the site and uncovered forgotten Fish and Game infrastructure such as the Punga (adult trout) Pond.
He said there were also plans to install a public drinking fountain and a sculpture "but the boardwalk will get the public coming here''.
Other major Wanaka Central Lakes Trust grant recipients included Wanaka Community House which received $1.4million and the Wanaka Golf Club which received $18,000 towards resealing its car park.