the region located along a river or stream, where the water flows to lower elevations

नदी या धारा के साथ स्थित क्षेत्र, जहाँ पानी नीचें की ओर बहता है

English Usage: The downstream area was affected by the heavy rainfall.

Hindi Usage: भारी बारिश से निचले क्षेत्र पर प्रभाव पड़ा।