| Answer | Crossword Clue |
|---|---|
| watercourses | A brook, stream, or artificially constructed water channel |
| watercourse | A brook, stream, or artificially constructed water channel |
| qanats | (in the Middle East) A gently sloping underground channel or tunnel constructed to lead water from the interior of a hill to a village below |
| qanat | (in the Middle East) A gently sloping underground channel or tunnel constructed to lead water from the interior of a hill to a village below |
| sluices | (in gold mining) A channel or trough constructed with grooves into which a current of water is directed in order to separate gold from the sand or gravel containing it |
