The Capital City Governor’s Office is planning to implement the Tuul Water Complex Project to collect rainfall and surface water.
An appropriate location for the complex has been selected in the upper reaches of the Tuul River at an elevation of 1,352 meters above sea level. According to the Capital City Governor’s Office, the site is close to the capital city, which will shorten the length of water transmission pipelines and reduce investment costs. In addition, the project will not affect protected forest areas or wildlife habitats. Engineering and geological studies have determined that the dam axis will be positioned perpendicular to the river flow, creating favorable natural conditions for self-cleaning by reducing sediment accumulation.
To cover a total area of 5,569 square meters, the water complex will feature integrated infrastructure,  including a reservoir, water transmission networks, and water treatment facilities. The reservoir dam will be 685.15 meters long and 35.8 meters high, with a maximum water depth of 19.84 meters. Exposed natural rock formations on the eastern bank and solid bedrock on the western bank are expected to provide favorable geological conditions, ensuring the structure’s stability and durability.
Once commissioned, the Tuul Water Complex will supply 50 million cubic meters of water annually for the capital’s needs and will also be able to store an additional 50 million cubic meters of water during periods of heavy rainfall. This will ensure a reliable water supply for the city’s growing population, help protect the Tuul River ecosystem, and support river flow during drought years, making the project strategically important.
Currently, Ulaanbaatar’s drinking water supply relies solely on deep groundwater sources, which carry the risk of depleting reserves. Experts have also warned that allowing rainwater to run off without storage contributes to water resource losses and increases flood risks.

Published Date:2026-01-22