针对新时期水利发展的战略性需求，提出数字流域基本概念，总结数字流域国内外研究进展，深入分析数字流域基础框架与技术标准、空天地协同流域综合监测体系、多源海量数据组织、处理与共享服务、多专业模型集成及应用等数字流域关键技术，并详细介绍数字流域技术在三峡工程运行管理中的应用实践，最后进行应用总结与展望。

The basic concept and recent research progress of Digital Basin (DB) are introduced in the light of the strategic demand of water resource development in the new era. Key technologies inclusive of the basic framework and technical standards, the comprehensive observation system involving space, air, and ground data, the organization, processing and sharing of multi  source mass spatio  temporal data, and multi  disciplinary model integration and application are discussed in detail. The practices of applying digital basin to the operation and management of Three Gorges Project are analyzed. The applications are summarized and looked forward.