While big Hindu temples are proposed at sangams (confluence of rivers), river banking institutions, lakes and seashore, Brhat Samhita and Puranas suggest temples could also be constructed in which a organic source of water is just not present. In this article too, they recommend that a pond be constructed ideally https://www.slideshare.net/slideshow/indian-temple-adelaide-why-do-families-visit-regularly/287187678