ﺁﺏ ﺳﻄﺤﯽ
Surface water

ﮐﻠﯿﻪ ﺁﺑﻬﺎﯾﯽ ﮐﻪ ﺩﺭ ﺳﻄﺢ ﮐﺮﻩ ﺯﻣﯿﻦ ﺟﺮﯾﺎﻥ ﯾﺎﻓﺘﻪ ﯾﺎ ﺭوی ﺁﻥ ﺟﻤﻊ ﻣﯽﺷﻮﻧﺪ.