Spatial and Climatic Variabilities of Rainwater Tank Outcomes for an Inland City, Canberra

Most of the studies on rainwater harvesting analysis present outcomes for particular cities, representing a single set results specific city. However, in reality, significant spatial and weather variabilities may exist, due to which presenting only one city would be misleading. This paper presents potential expected water savings supply reliability through domestic tank an inland An earlier-developed daily balance model, eTank, was used calculations annual reliability. Australian city, Canberra, selected as case study relevant rainfall data were collected from Bureau Meteorology website. For variation, two rain gauge stations within Canberra selected. each station, historical data, three years dry, average wet years. condition, reliabilities calculated different demands with sizes up 10,000 L connected roof sizes. Then, variations among conditions, well stations, evaluated. It found that, regard savings, maximum variation 68.6% can between dry weather; however, 15.4% is stations. Regarding reliability, 123% weather. Whereas, 17% Such will provide valuable insights users stakeholders differences.