flood stage

基本解释

The Mississippi River crested at Vicksburg yesterday at a record high of 14.1 feet above flood stage, but did not breach the main levee or inundate the city.
昨天密西西比河洪水到达维克斯堡的水位超出警戒水位14.1英尺，但是并没有损坏主堤，也没有淹没整个城市。
Forecasters warn many rivers in the nation's midsection could crest above flood stage in the coming days.
天气预报员已预报了在国家中部地区的多条河流可能在未来几天内超出洪水位。
The flood events have self-similarity and fractal characteristic for certain duration, the fractal theory can be used to determine the division of flood stage.
洪峰散点序列在一定尺度范围内表现出了自相似性和分形特征，可用分形理论划分洪水分期。

On May third, the Cumberland River measured almost sixteen meters, more than three and a half meters above flood stage.

When river levels exceed flood stage by several feet, serious problems can occur.
NPR: Floodwaters Rising After Storms Deluge Heartland
Forecasters now expect it to climb up to 12 feet above flood stage at some spots in Missouri and Illinois.
NPR: Floodwaters Rising After Storms Deluge Heartland
The Wabash River in Tippecanoe County reached more than 14 feet above flood stage on Saturday, the highest level since 1958.
NPR: Crests Approaching In Several Towns In Midwest

洪水位
The frequently occurring unordinary flood stage increases the difficulty of flood control practice in the river.
频繁发生的异常洪水位现象给渭河下游防洪增加了困难。