critical runoff

例句：

1. 1. The critical runoff rate is themaximum amount of water that can be safelyreleased from a river without causing flooding.
   临界径流率是河流中可以安全释放的最大水量，否则会导致洪水。
2. 2. Inthis region, the critical runoff occursduring the rainy season when the rivers are at their highest flow.
   在这个地区，临界径流发生在雨季，那时河流的流量达到最高。
3. 3. The decision to divert the river for irrigation purposeswas based on the critical runoff analysis.
   决定将河流改道用于灌溉的决定是基于临界径流分析的。