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- Title
An Analytical Risk Analysis Method for Reservoir Flood Control Operation Considering Forecast Information.
- Authors
Ning, Yawei; Ding, Wei; Liang, Guohua; He, Bin; Zhou, Huicheng
- Abstract
Risk analysis is vital for reservoir flood control operation considering forecast because forecast uncertainties may create risks of multiple hazard events, including the single-hazard events, the union and intersection of single-hazard events (UHE and IHE). The probability of UHE and IHE are the major concern of decision-makers. This research proposes an analytical flood risk probability calculation framework for single-hazard event, UHE and IHE caused by uncertainties in flood forecasting and takes Dahuofang Reservoir, located in the Hunhe River basin, Northeast China, as a case study. In the framework, the risk is calculated by the integral of the joint probability density function (Pdf) of the risk sources over the hazard domain, which is the collection of the values of risk sources that cause hazards. The determination method of the hazard domain and the Pdf of risk sources and the procedure of risk analysis are elaborated. Results of single-hazard events show that the proposed methodology is of higher precision compared with the risk analysis method based on the law of total probability. Meanwhile, the flood risks of UHE and IHE are calculated for the reservoir operation under different levels of flood limit water level. The study provides a new method of flood risk analysis for flood control reservoir operation.
- Subjects
FLOOD control; RISK assessment; PROBABILITY density function; FLOOD risk; FLOOD forecasting; DATA logging; WATER levels
- Publication
Water Resources Management, 2021, Vol 35, Issue 7, p2079
- ISSN
0920-4741
- Publication type
Article
- DOI
10.1007/s11269-021-02795-6