Abstract: The Taum Sauk upper reservoir rebuild project primarily consisted of the reconstruction of the existing inoperable rock fill upper reservoir with the construction of a modern concrete faced symmetrical roller compacted concrete（RCC） dam. As the project is the largest RCC project constructed in the USA and it has asymmetrical cross-section with relatively low strength RCC，numerous design issues arose during the design process. This paper summarized these issues and introduced its construction，for reference.

摘要： Taum Sauk上水库重建工程主要是新建一座现代化的混凝土面对称碾压混凝土（RCC）坝来取代原有的土石坝。由于该坝是美国最大的RCC项目并采用了对称断面和相对低强度的RCC，设计中需要解决许多问题。文章总结了相关设计事项，并简要介绍了施工过程，供参考。