A City Engineered for Water
The ancient capital of Mrauk U, founded in 1430, sits in a region of climate extremes. Located in Myanmar's Rakhine State, the area receives massive amounts of rainfall during the monsoon season—up to 203 inches (5,156 mm) in nearby Sittway. This is followed by a pronounced dry season. To survive and flourish, the engineers of the Mrauk U Kingdom developed a water management system that was integrated into the city's design. The system's function was to capture and store the monsoon's deluge in a network of reservoirs and canals, providing a stable water supply for a population that reached 160,000 in the 17th century.
The landscape, a series of natural hill ridges surrounded by alluvial plains and marshes, was modified. Engineers constructed moats, embankments, and dozens of reservoirs, or "tanks," which are still visible features of the landscape today. These structures had multiple purposes. They provided water for domestic use and agriculture, controlled flooding by diverting excess water, and formed a defensive barrier around the city and its palace. Monuments and fortifications were built from thick, squared sandstone blocks, giving them a fortress-like appearance well-suited to the city's defensive and water-control needs.
Gravity, Gates, and Canals
The hydraulic system operated on gravity. Water was channeled from the surrounding hills into the city’s network of reservoirs during the rainy season. one of the largest surviving reservoirs is Laksaykan Lake, which covers about 100 acres. Its embankment features two stone gates, each 12 feet high. The western gate, measuring 24 feet long and 17 feet high, could be opened to deliberately flood plains to the north, demonstrating its dual use in water management and defense. This complex network of man-made canals and creeks connected the reservoirs, allowing for controlled distribution of water throughout the dry season. The system was used for storage and defense; it also created a transportation network within the city. The careful management of water levels ensured the city remained functional and habitable year-round, mitigating both the destructive potential of the monsoon floods and the scarcity of the dry season. The entire urban plan, including its 30-kilometer-long fortifications, was built around this water management. Today, many of these ancient canals and channels are silted or blocked, but efforts are underway to dredge and restore parts of this hydraulic system.