While important Hindu temples are recommended at sangams (confluence of rivers), river banks, lakes and seashore, Brhat Samhita and Puranas counsel temples may also be created in which a organic source of h2o is not really present. In this article too, they propose that a pond be designed if possible https://indianhindutempleadelaide.blogspot.com/2025/01/exploring-sacred-spaces-hanuman-mandirs.html