If you look into details, you will find that the myth of Phra Ruang was considerably related to the water, such as the story of the some of Nang Nak, a daughter of the God of Water, Miracle of Phra Ruang with the tribute of water, and Phra Ruang diving which was the final chapter of the myth. This myth might be trying to show an interesting symbol to listeners to indicate that water was important and water was a matter to which the leaders of the ancient communities needed to pay attention.

The ancient city of Sukhothai, Si Satchanalai, and Kamphaeng Phet, the major cities of the Sukhothai Kingdom were found with signs of efforts to effectively manage water resources. And according to academic studies, it was found that those efforts were very satisfying, resulting in the quote "there are fish in the waters and there is rice in the fields" of the Sukhothai Kingdom as stated on the stone inscription of King Rarnkhamhaeng.

Water management of the city in Sukhothai culture covered since the search for water resources, catchment, irrigation, to the prevention of damage from water. This affected both the welfare of the city and the well-being of the people, as seen in the stone inscription on the base of the I-suan image in Kamphaengphet built around 1510, mentioning the improvement of irrigation that was beneficial to agriculture, "the pipe of Phra Phraya Ruang sending the water to Bang Phan was completely recovered and he was farming through the sky and find that pipe. The pipe was made to bring water to the paddy fields for irrigation ditches, not through the sky". This showed that the irrigation system transferring water called "the pipe of Phraya Ruang" was so powerful that it could bring water from Kamphaeng Phet to nourish the area of Bang Phan (assumed that the district of Phran Katai). It was found that ridges for water catchment and forcing water stream to flow to a place where it could not runoff into and flood over the city. This wisdom helped Sukhothai successfully manage agriculture. Rice fields became a part of the merit to be dedicated to temples, as it appears in many stone inscriptions, indicating the "offerings" which referred to dedicating the fields and the benefits of the fields offered to temples.

It can be noticed that even the irrigation system of Kamphaengphet was also called. "The pipe of Phraya Ruang" reflect the relations among people, culture, and nature. This is a significant example of the "heritage of Phra Ruang" transferred to us today.