From the Maitland Mercury report:
Walka Water Works was wild country overgrown with weeds when Cr Ray Fairweather embarked on an ambitious project to transform it into one of the city’s best-loved recreation areas.The historic site captured Cr Fairweather’s attention in “about 1982 or 1983”, in a report by a council planner about future urban development in Oakhampton and Aberglasslyn.
Full report by Briony Snedden available at Maitland Mercury, 14 Dec, 2011.