Large historical flood discharges can play an important role in hydrologic frequency analysis.

历史洪水在洪水频率计算中起到了重要作用。

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Considering the time of last historical flood, the annual flood risk model of flood protection sys-tems is presented.

本文在考虑最近一次历史洪水发生时间这一因素下，提出了防洪系统年洪水风险率模型。

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Historical flood is the flood that has occurred in the local area. Using historical flood investigation can improve the calculation accuracy of design flood.

历史洪水是当地历史上曾经发生的，应用历史洪水调查可以提高设计洪水计算精度。

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During the visit to Wat Chaiwatthanaram, one of the most affected cultural remains in the Ayutthaya Historical Park, the Director General was informed about the damages caused by the heavy flood with water levels up to 3 meters in late 2011 and the main challenges for recovering damages at the monument.

UNESCO: MEDIA SERVICES