本译本为国家能源局委托水电水利规划设计总院按照有关程序和规定，统一组织翻译的能源行业标准英文版系列译本之一。2022年11月4日，国家能源局以2022年第5号公告予以公布。本译本是根据中国电力出版社出版的《水电工程水库回水计算规范》NB/T 35093-2017翻译的，著作权归国家能源局所有。

1 General Provisions
2 Terms
3 Basic Data
4 Boundary Conditions for Calculation
4.1 Sections
4.2 Flow Rates
4.3 Initial Water Level
5 Calculation Method and Roughness
5.1 Calculation Methods
5.2 Roughness
6 Determination of Backwater Curve
6.1 Calculation Schemes
6.2 Calculation of Backwater Curve
6.3 Rationality Analysis of Results
6.4 Envelope Curve
7 Design Results
Appendix A Schematic Diagram of Locations of Cross Sections for Calculation of Reservoir Backwater
Appendix B Table of Calculation Results of Reservoir Backwater Curve for Main Stream
Appendix C Table of Calculation Results of Reservoir Backwater Curve for Tributary
Appendix D Schematic Diagram of Reservoir Backwater Curve for Main Stream
Appendix E Schematic Diagram of Reservoir Backwater Curve for Tributary
Explanation of Wording in This Code