| sound(noun, strait, neck, narrows) |
| source(noun, branch, affluent, confluent, bayou) |
| spate(noun, movement, current, motion, stream) |
| spillway(noun, course, conduit, canal, aqueduct) |
| strait(noun, sound, neck, narrows) |
| streamlet(noun, branch, affluent, confluent, bayou) |
| stretch(noun, sound, strait, neck, narrows) |
| succession(noun, movement, current, motion, stream) |
| swash(noun, course, conduit, canal, aqueduct) |
| tide(noun, movement, current, motion, stream) |
| torrent(noun, course, conduit, canal, aqueduct) |
| train(noun, movement, current, motion, stream) |
| trough(noun, course, conduit, canal, aqueduct) |
| undertow(noun, movement, current, motion, stream) |
| watercourse(noun, course, conduit, canal, aqueduct) |
| waterway(noun, course, conduit, canal, aqueduct) |