The Banqiao Reservoir Dam (simplified Chinese: 板桥水库大坝; traditional Chinese: 板橋水庫大壩; pinyin: Bǎnqiáo Shuǐkù Dàbà) is a dam on the River Ru in Zhumadian Prefecture, Henan province, China. Its failure in 1975 caused more casualties than any other dam failure in history. It was subsequently rebuilt.