2026年7月底，甘肃敦煌遭遇罕见特大洪水。党河敦煌城区段在7月28日22时至7月29日22时内单日洪量达2264万立方米，达到千年一遇量级1。7月28日至30日，3天总洪量突破4000万立方米，超过百年一遇的设防红线1。这场洪灾造成的经济损失超过2亿元1。
在防汛应对中，敦煌实现了全城零人伤亡受困1。敦煌市水务局局长桑明表示，"洪水已经很大了，但是自溃坝还没见松垮，还是需要人力协助才能溃坝"1。气象资料显示，肃北县最大降水量可达50毫米，阿克塞县可达15—30毫米，敦煌局部地区降雨最高35毫米左右1。
Dunhuang in Gansu Province experienced a rare catastrophic flood at the end of July 2026, testing the region's emergency response capabilities in a landscape accustomed to aridity rather than water.1 Between 10:00 p.m. on July 28 and 10:00 p.m. on July 29, the Dang River's urban section discharged a single-day volume of 22.64 million cubic meters, reaching a millennium-scale flood level.1 Over the three-day period from July 28 to 30, the cumulative discharge exceeded 40 million cubic meters, surpassing the hundred-year design standard that typically guides regional flood preparedness.1
The inundation inflicted direct losses exceeding 200 million yuan across the city, yet local authorities' coordinated response achieved a remarkable outcome: zero casualties and no residents trapped by floodwaters.1 Sang Ming, director of Dunhuang's Water Resources Bureau, characterized the situation as urgent but manageable, stating that while the water flow had grown severe, the embankments had not yet shown signs of spontaneous collapse, requiring deliberate human intervention to implement controlled breaching strategies if necessary.1 Rainfall across the affected region varied, with Subei County recording the heaviest downpour of approximately 50 millimeters, Aksai County between 15 and 30 millimeters, and localized areas of Dunhuang reaching roughly 35 millimeters.1
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