Because of the complication of influence factor of flood, the relationship between flood peak level and flood peak discharge is uncertain.
洪水影响因素复杂，洪峰水位和洪峰流量之间呈一种模糊关系。
The designed discharge and designed flood level are determined by hydrological computation and main characteristic value of highway bridge is checked.
通过桥渡水文计算，确定了设防流量及设防水位，校核了大桥主要特征值；
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