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。
本译本是根据中国水利水电出版社出版的《水电工程水文设计规范》NBT 10233—2019翻译的，著作权归国家能源局所有。

1 General Provisions
2 Terms
3 Basic Data
3.1 Basic Data Collection and Processing
3.2 Hydrological Investigation
3.3 Basic Data Review and Evaluation
4 Meteorology
4.1 General Requirements
4.2 Climatic Characteristics Analysis
4.3 Project Area Meteorological Elements Calculation
5 Runoff
5.1 General Requirements
5.2 Runoff Characteristics Analysis
5.3 Runoff Restoring Calculation
5.4 Runoff Data Interpolation and Extrapolation
5.5 Runoff Series Representativeness Analysis
5.6 Runoff Analysis and Calculation
5.7 Low-Flow Runoff Analysis and Calculation
5.8 Ice-Snow Melt Recharge Area Runoff Analysis and Calculation
5.9 Karst Area Runoff Analysis and Calculation
6 Flood
6.1 General Requirements
6.2 Flood Analysis and Calculation
6.3 Analysis and Calculation of Seasonal Design Flood and Construction Period Design Flood
7 Sediment
8 Evaporation, Water Temperature and Ice Regime
8.1 Evaporation Analysis and Calculation
8.2 Water Temperature Analysis and Calculation
8.3 Ice Regime Analysis and Calculation
9 Water Stage
9.1 River Stage Analysis and Calculation
9.2 Tidal Stage Analysis and Calculation
10 Stage-Discharge Relation
11 Hydrological Telemetry and Forecasting System
11.1 General Requirements
11.2 System Planning Design
11.3 System Overall Design
Appendix A Runofr Restoring Calculation Methods
Appendix B Water Surface Evaporation Conversion Coefficient for E-601 Evaporator Pan
Explanation of Wording in This Code
List of Quoted Standards