Design storm is for flood control and flood control project planning and design, control time rainfall in line with the specified design standards, spatial and temporal distribution in line with the local rainfall characteristics of the rainstorm process, the key technical parameters include the type of rainfall, the design of rainfall at different times, spatial and temporal distribution of the composition of the flood control project planning and design.
Design flood level refers to the design of water conservancy projects, in a certain set of defense standard conditions to ensure that the project flood safety requirements designed by the water level. In the lower reaches of the Yangtze River in the typical water system of the Taihu Lake basin such as the plains of the river network area, the design flood level is to determine the top of the river embankment elevation, as well as along the top of the gate of the gate and pump project elevation and other key technical parameters of the engineering design of the one of the most important basis.
Design rainfall and design flood determined by existing plans in the relevant areas of the demonstration zone; results of rainfall frequency analysis for different control periods; characteristic water levels of hydrological stations published by the hydrological departments of provinces and cities, design water levels of major representative stations determined by existing plans in the relevant areas of the demonstration zone, and results of water level frequency analysis for different recurrence periods. The dataset contains the characteristic water level and rainfall frequency information of the Taihu Lake Basin and various water conservancy subregions from 1956 to 2020.
Based on the annual maximum water level and the time of occurrence of typical flooding disasters since the main representative stations in Yangchengdian Mao and Hangjiahu areas where the demonstration area is located have measured data, analyze the relationship between the duration of the annual maximum water level and the duration of rainfall with the data of rainfall process before and after the occurrence of the maximum water level in each region; and analyze the relationship between the design water level of each station in different recurrence periods and the characteristic water levels such as the historically measured water level, the warning level and the guaranteed level, and so on.
Based on the annual maximum water level and the time of occurrence of typical floods since the main representative stations of Yangcheng Dianma District and Hangjiahu District where the demonstration area is located have measured data, and with the information of rainfall process before and after the occurrence of the maximum water level, the relationship between the annual maximum water level and the rainfall duration in each region was analyzed.
Water level is analyzed according to the characteristic water level officially released by the hydrological department as well as the design water level in the approved plan of the relevant region, etc. The analysis conclusions are similar to those of other research results of the region, which are in line with the regional hydrology and disaster-causing characteristics, and can be used for the synergistic analysis of the design rainstorms, design floods, and design water levels in the relevant regions.
| # | number | name | type |
| 1 | 2021YFC3000100 | Lower Yangtze River Flood Disaster Integration and Control and Emergency De-risking Technology and Equipment | National key R & D plan |
This work is licensed under
CC BY 4.0 (Creative Commons Attribution 4.0 International License).
CSTR:11738.11.NCDC.NHRI.DB6772.2025
10.12072/ncdc.nhri.db6772.2025
