This app provides step-by-step instructions for collecting water from bores in northern Australias wet/dry tropics and arid regions. It is designed to be used with a dedicated website and a water sampling kit. Some information, including the location of the bore, the time and date of sampling, and pH, are recorded directly onto the app. At the same time, other variables, including salinity, hydrogen and oxygen isotopes, and environmental DNA (eDNA), will be measured on water samples sent to Charles Darwin University. The results of the project will be publicly available on the project website.