While big Hindu temples are advisable at sangams (confluence of rivers), river banking institutions, lakes and seashore, Brhat Samhita and Puranas advise temples can also be developed wherever a purely natural supply of water is not really present. Here as well, they advise that a pond be built if possible https://pressbulletinwire.blogspot.com/2025/01/exploring-divine-presence-of-hanuman.html