Not only were they practical in that they ensured a water supply and fresh fish, but they were a status symbol as they were expensive to build and maintain.
آن‌ها نه تنها در تامین آب و ماهی تازه به کار می‌رفتند، بلکه نمادی از قدرت بودند، زیرا ساخت و نگه‌داری آن‌ها بسیار هزینه‌بر بود.