Dunhuang Fights Historic Floodwaters, Protecting Mogao Caves
In an extraordinary turn of events for one of the world’s driest cities, Dunhuang—the ancient Silk Road oasis in northwest China’s Gansu Province and home to the UNESCO-listed Mogao Caves—is fighting a historically unprecedented flood. The Danghe River surged past all recorded levels on July 28, prompting authorities to activate a Level 3 emergency response and mobilize over 1,000 personnel to reinforce embankments, protect cultural heritage sites, and safeguard critical infrastructure Xinhua.
A Desert City Under Water
Dunhuang sits at the edge of the Kumtag Desert, where average annual precipitation is less than 70mm—roughly equivalent to two weeks of rainfall in London—while evaporation exceeds 2,500mm annually. The current flood event, triggered by days of heavy rainfall upstream in the Qilian Mountains, has sent water levels on the Danghe River to heights never before recorded in the city’s hydrological history. The flood peak arrived at approximately 6:00 p.m. local time on July 28, catching the attention of a nation still reeling from a deadly flash flood in Weiyuan County, Gansu, just two days earlier that killed 10 people and injured 23 Caixin.
A detailed account from Chinanews Gansu reported that 16 government departments—including water affairs, emergency management, public security, fire services, and transportation—were immediately activated. The city deployed 77 municipal, town, and village flood control officials, 45 river and lake chiefs, and 516 personnel at warning posts. Seven professional emergency teams, nine town-level rescue squads, and five social rescue organizations were integrated into the response effort.
Race to Protect the Mogao Caves
One of the most urgent priorities was the protection of the Mogao Caves, a UNESCO World Heritage site containing thousands of Buddhist murals and sculptures dating back to the 4th century AD. Fire rescue teams established pre-positioned guard points near the cave complex, and authorities deployed drones for aerial monitoring and loudspeaker broadcasts to warn residents away from danger zones People’s Daily.
Li Xiangchun, captain of the Dunhuang Blue Sky Rescue Team, described the scene: “Team members are evacuating residents near the river channel away from danger zones while stacking sandbags to build flood barriers. The team will remain on duty until the flood situation completely subsides.”
Kong Long, Party Secretary of Dujiadun Village, reported that overnight efforts had stabilized the most dangerous sections. “Everyone completed the reinforcement of dangerous embankment sections overnight. Currently, the river embankment is overall safe and stable,” he said, as reported by People’s Daily.
Infrastructure Under Pressure
Despite the extreme conditions, no levee breaches had been reported as of the latest updates. Dunhuang had invested in strengthening its defenses in the years prior—building more than 30 kilometers of new Level 5 embankments, bringing the total to 90 kilometers, and deploying an AI-based intelligent monitoring platform at the Danghe River scenic area with 15 new monitoring points QQ News / Dunhuang Release.
However, the G215 National Highway’s Dunhuang section sustained water damage and collapse, with traffic control measures put in place. Authorities also maintained round-the-clock protection of the downstream railway station, airport, and surrounding farmland.
A Broader Climate Signal?
The Dunhuang flood occurred within days of the deadly Weiyuan County flash flood on July 26, suggesting a broader pattern of extreme rainfall events affecting Gansu Province. The province had already conducted flood control emergency drills in Dunhuang on July 10, and the city’s 14,000-plus flood control materials and 29,200 pre-positioned supplies at key areas reflect growing preparedness for climate extremes in what was once considered one of China’s most drought-prone regions.
What’s Next
As of July 30, moderate rainfall continued in Dunhuang, with upstream releases causing further surges in the Daquan River. Authorities have implemented 24-hour patrols at the Danghe River scenic area and the Daquan River, with real-time monitoring of rainfall and water levels continuing indefinitely. The city’s emergency response remains active, with teams on standby for potential secondary disasters such as mountain torrents and waterlogging.
The flood event raises pressing questions about the vulnerability of ancient cultural heritage sites to increasingly extreme weather patterns—a concern that extends far beyond the borders of China.