barrage
barrier
building
cascade
channel
concrete
dam
distribution
ecology
electricity
energy
engineering
environment
equipment
floodgate
flow
flowing
gate
generation
hydro
hydroelectric
industrial
industry
infrastructure
motion
nature
open
outdoor
power
pressure
pump
rapid
renewable
river
sluice
small
splash
spray
stream
structure
summer
sustainable
technology
tourism
turbine
view
water
waterfall
weir
wet