洪水在北港河槽演变过程中起着重要的作用。
Besides, flood plays an important role in North Channel evolution.
河岸抗冲稳定性较强，并经常出现高含沙量大洪水，是形成渭河下游窄深河槽的关键。
The strong scour resistance and stability of the Banks and coming big floods always with high sediment concentration are the key fators for forming a narrow and deep channel in the lower wei River.
双岸整治方案是基于窄深河槽洪水期具有很强的输沙潜力与泄洪能力。
Banks training is conducted based on narrow and deep channel in flood season that has strong potentiality of sediment transport and flood carrying capacity.
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