slopes
preferred label: سراشیبی‌ها @fa
type: Concept
related: chutes

spillways
preferred label: مجرای سرریز @fa
type: Concept
related: chutes

freshwater structures
preferred label: سازه آب شیرین @fa
type: Concept
narrower: chutes

chutes
alternative label: flumes
related: spillways
related: slopes
broader: freshwater structures
preferred label: ریزش آب @fa
type: Concept