Site-specific economic assessment of the viability of evaporation and seepage mitigation systems for stored water in Australia. EvapAdvisor provides a site-specific assessment of evaporation loss from a storage dam and provides an economic assessment of the viability of evaporation and seepage mitigation systems. The user enters appropriate data to customise the calculator to their site. The tool replaces an earlier version called the Economic Ready Reckoner for Evaporation Mitigation Systems.