The Project 635 Dam (Chinese: "635"水利枢纽工程; pinyin: "635" shuǐlì shūniǔ gōngchéng) is one of the three dams constructed on the Irtysh River in China's Xinjiang Uighur Autonomous Region.

The embankment dam is located in Fuhai County, about 56 km east of Beitun.

[citation needed] Water from the reservoir is used for industry, agriculture and power.

[1] The Project 635 reservoir is required not only to supply the Irtysh–Karamay–Ürümqi Canal with water, but also to maintain a sufficient amount of water flow in the Irtysh below the dam, for the local agricultural use and ecosystem maintenance.

[2] [3] Even though the Burqin is a tributary of the Irtysh, its natural confluence point with the Irtysh is in Burqin Town (the county seat of Burqin County), which is over 100 km downstream from the Project 635 Dam, and in the absence of the "Bringing Western Water to the East" canal its waters would not be available at the Project 635 location.