In the late 1950s, the creation of a large reservoir for the Sanmenxia hydropower project required the displacement of tens of thousands of households along the Yellow River. Simultaneously, the state commenced a land-reclamation project, sending people from populated areas to the frontiers. Under the supervision of county and provincial authorities, more than 7,000 reservoir inhabitants from Henan were mobilized to migrate to Dunhuang, an oasis surrounded by the Gobi Desert in the northwest. The socialist state's pursuit of irrigation and hydroelectricity benefits not only altered the waterscape of the Yellow River; it also impacted nearby rural communities as well as those a thousand miles away. From the high-modernist perspective, the state-sponsored demographic engineering and the Yellow River engineering seemed to complement each other well. Yet, with the massive flight of resettlers, the state-envisioned integration of reservoir displacement and frontier reclamation ultimately failed.