source / spring nacimiento: The source of the Tagus is in the Sierra de Albarracín.
headwater cabecera: The region is an important wildlife habitat and the headwater for the region's river.
(river) bank orilla: She was enjoying her walk down the quiet country lane towards the river bank. ^ There is intensive cultivation along the banks of the river.
riverside orilla, ribera: the riverside warehouses of the London docklands
backwater remanso: It was a peaceful and unspoilt backwater.
riverbed / bed lecho, cauce: There was a dried-up riverbed not far away, and along its banks were the skeletons of trees long dead.
sandbank banco de arena: The boat ran aground on a sandbank.
sand bar / sandbar barrera de arena, banco de arena: The Kumbukan river rises with the first rains and breaks down the sand bar between itself and the sea.
course curso: We went down the course of the river.
(river) basin cuenca: This year's winter storms dumped more rain south of the river basin. ^ the Mississippi river basin
rapids (plural) rápidos shoot the rapids bajar los rápidos: There were some rapids on a stretch of the river. ^ Come and shoot the rapids in a virtual prehistoric world.
torrent /ˈtɒrənt/ torrente: Again, a torrent of water had flooded the valley. ^ a raging/rushing torrent
waterfall (also falls plural) cascada, catarata, cataratas: the Niagara Falls
meander /miˈændə/ 1. meandro 2. serpentear: The river meanders through the city.
ford /fɔːd/ vado: They didn't know the location of the ford.