“…This category encompasses ecosystem needs and flows, with five definitions [22,28,30,31,35] mentioning the role of water in life and one explicitly advocating for knowledge of interconnected aspects like "air, water, and/or biodiversity" [22] (p. 7). In addition, six definitions address hydrological processes, cycles and functions [7,18,28,31,33,38], but only three specify that water literacy includes knowledge at the level of water's chemical and physical properties [27,31,40]. Interestingly, four definitions call specifically for an understanding of "watershed concepts" [36] (p. i) or ability to define watersheds [18,29,35].…”