“集水区”用英语怎么说？

水槽广泛用于测量集水区的经流流量.The flumes are used extensively to measure watershed turnoff.降雨历线资料为上游集水区推估洪水流量历线的重要依据.Hyetographs are important in estimating stormflow hydrographs from upstream watersheds.我们只要不干扰集水区的生态平衡,就可以无限期地利用其水域....