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

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

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

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