Based on the flood level frequency curve, hydrological failure risk was divided into flood overflowing risk and flood overtopping risk.

基于推求的洪水位频率曲线，将堤防水文失事风险分为洪水漫溢风险和洪水漫顶风险。

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With the water level now gradually receding, Chen and his 20 comrades are lodged in villages near the flood zone.

如今，洪水正慢慢褪去，陈夏勇和20位战友还住在洪灾区附近的老乡家里。

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The project will be built on a polder, a recessed area below sea level where flood waters settle from heavy rains.

该项目将建立在一片堤围泽地之上，那里是一处低于海平面的洼地，暴雨沉积就会洪水泛滥。

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Yorkshire Water claims the station at Kingswood would provide five-times the level of flood protection for the area.

BBC: Yorkshire Water to appeal over pumping station plan

In all, 1.1m tonnes of earth and rock were excavated in the construction of the 2010 course, flattening out the harsh gradients of the back nine, and using the aggregate to raise the opening holes above the level of the Usk's flood plain.

BBC: Countdown under way to Ryder Cup

So we're still contending with flood level along the St.

NPR: Hurricanes Wreak Havoc In Haiti And Cuba