自然灾害是指大气、地质或水文等因素造成的灾变，包括地震、火山爆发、泥石流、海啸、洪水和干旱等。
Natural disasters are catastrophic events with atmospheric, geologic, and hydrologic origins. Disasters include earthquakes, volcanic eruptions, landslides, tsunamis, floods, and drought.
设计洪水计算方法主要是可能最大降雨和水文频率法。
The main methods for calculating designed flood are probable maximum precipitation and hydrologic frequency analysis.
本文根据该站实测水文资料，简要地做了该站历年洪水特性分析。
This paper simply analyses the annual flood features in the station based on the survey hydrology information.
流域水文预报模型的参数率定是洪水预报中非常重要和困难的工作。
The parameter identifying of the hydrology forecasts model is very important and difficult work in the flood forecasting.
对水文测站的洪水与枯水巡视进行了可行性分析。
The paper analyzes ground survey of flood and low water in hydrological survey station.
介绍了乌苏里江流域自然地理及气象概况，主要支流的水文特征，分析了乌苏里江的洪水组成及特点。
An outline introduction to the physical geography, meteorology and hydrologic character of its main branch was presented. The combination of flood and its characteristics were analyzed.
水源问题、洪水问题、污水问题是城市化过程中的三大水文响应，也是城市水环境管理研究的重要课题。
Problems of water source, flood disaster, and water pollution are the three hydrological responses in urbanization process, also are the main issues in water environment management.
城市化进程对城市水文特性产生了重大影响，造成了城市洪水计算的特殊性与复杂性。
The process of urbanization has a significant impact on the hydrological characteristics of a city, which causes the special and complex nature of the calculation method of urban flood.
以某水文站实测的年最高洪水位为例，对现有堤防在不同的设防标准下漫顶失效概率进行了分析。
As an example, the overtop failure probability of a dike under different floodwater standards is analysed using measured annual maximum flood level at a hydrological station.
本文结合相关水文成果，对乌江流域的气候、降水、暴雨、径流、洪水特性进行简要总结。
The article presents a brief summary of the climate, precipitation, rainstorm, runoff, flood characteristics of Wujiang river catchment according to the related hydrology achievements.
历史洪水调查和邻近地区水文站设计洪水的地区综合对提高设计洪水的合理性和可靠性有重要作用。
The historical floods investigation and regional synthesizing of design floods at nearby hydrology stations are very important to increase the reliability and reasonability of the design floods.
数字水文模型是一种先进的数字流域模型，它在柘溪水库的成功应用，将为柘溪水库的洪水预报发挥重大作用。
Digital hydrological model is an advanced digital river basin model, whose successful application will be of great importance to the flood-forecast in Zhexi reservoir.
实际估测的区域降水量不仅对进行洪水监测、发布洪水警报起指导作用，而且是各种水文和大气数值模式用到的重要的实测原始资料之一。
Precipitation is not only a kind of essential data to a hydrological or atmospheric numerical model, but also a sort of key information for flood monitoring and warning.
万泉河流域面积大、降雨分布不均匀，洪水受多种复杂因素的影响，因此采用多单元的水文学模型与河道水力学模型相结合的预报系统。
In order to study flood management problems of the Wanquan River basin, a hydrological multicell and hydraulics model has been built up to simulate complex flood routing behaviors.
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。
Based on the flood level frequency curve, hydrological failure risk was divided into flood overflowing risk and flood overtopping risk.
自然灾害源于大气、地理或者水文的灾变，包括地震、火山爆发、泥石流、海啸、洪水和干旱等。
Natural disasters are catastrophic events with atmospheric, geologic, and hydrologic origins. Disasters include earthquakes, volcanic eruptions, landslides, tsunamis, floods, and drought.
本文对有关情况进行了分析，并对如何改进高要水文站洪水预报方法进行了改进研究，取得了比较满意的成果。
By analyzing the concerned conditions, this paper makes a study on how to improve the methods of flood forecasting at Gaoyao Hydrometric Station, and obtains the satisfied results.
分析了长江下游感潮河段大洪水和特大洪水高水位形成的水文因素，揭示了年最高水位今后一段时期内可能的变化趋势。
Hydrological factors of formation of large flood in the lower tidal reach of the Yangtze River are analyzed, and change trend of large flood is revealed.
根据该系统的特点，将模型分解为三峡库区和坝址至湖口两大子系统，采用水文学方法进行洪水演进计算。
The system is decoupled into two subsystems, namely the upper dam site subsystem and the dam site Hukou subsystem, according to its nature. The flood routing is carried out with hydrology methods.
实时洪水预报根据实时的水文气象资料，采用流域水文模型或方法对未来洪水过程或特征做出预测预报。
Real-time flood forecast is a prediction for future flood events or characteristics by adopting watershed hydrological model or methods on the basis of real-time hydrological and meteorological data.
SCS模型是美国水土保持局研制，用于小流域洪水计算的水文模型。
The SCS model, designed by American soil Conservation Service, is used. to compute flood discharge in small basins.
为了定量研究西苕溪流域洪水发生机制和动态规律，本项目研制了一个局地尺度综合水文模型。
A local scale integrated hydrological model has been developed for the studies of flood mechanisms and dynamics in this area.
本研究表明修正后的SCS 遥感水文模型，对我国东部中小流域进行快速、准确洪水预报是可行的。
This research indicates that application of modified SCS model in forecasting floods quickly and accurately is feasible in the small ba…
水库设计洪水就是在给定工程安全标准情况下某个典型洪水过程，设计洪水的频率特征表现的就是其水文风险。
Designed flood of reservoir is a typical flooding process under given engineering safety standard. The frequency of designed flood is regarded as hydrological risk.
淤地坝系规划阶段水文计算的主要任务是计算设计暴雨量、设计洪水量和输沙量等重要特征参数。
In the stage of planning silt dam system, the main task of hydrological computation is to design rainstorm, design flood and sediment load and other important characteristic parameters.
采用水文学与水力学、确定与随机相结合的方法，研究大流域洪水预报与洪水调度管理。
The method of combination of hydrological with hydraulic methods and deterministic method with stochastic method is used in the flood forecasting and flood management of large watershed.
采用水文学与水力学、确定与随机相结合的方法，研究大流域洪水预报与洪水调度管理。
The method of combination of hydrological with hydraulic methods and deterministic method with stochastic method is used in the flood forecasting and flood management of large watershed.
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