Words to Describe sluices

How sluices often is described ("________ sluices")

• upper
• overflow
• shallow
• closed
• swift
• golden
• built
• smaller
• secondary
• hidden
• wide
• overloaded
• turbine
• necessary
• flowing
• vast
• wooden
• certain
• primitive
• substantial
• automatic
• tail
• several
• deep
• old
• lower
• temporary
• great
• vertical
• vital
• pinched
• small
• natural
• additional
• huge
• innumerable
• suitable
• ordinary
• main
• open
• cylindrical
• piddling
• subterranean
• exhausting
• dam
• northern
• under
• tearful
• scouring
• lock
• short
• tiny
• double
• new
• frequent
• water
• long
• separate
• larger
• bottom
• narrow
• sinuous
• riffled
• immense
• large
• numerous
• proper
• powerful
• irrigation
• tidal
• hydraulic
• concrete
• enormous
• acting
• broad
• level
• nearest