barrier
bridge
building
canal
cascade
control
dam
dike
dirty
electricity
energy
engineering
environmental
falling
flood
flowing
foaming
gate
generate
gravity
hydro
hydroelectric
industrial
infrastructure
liquid
lock
motion
outdoor
overflow
plant
pouring
power
release
renewable
resource
river
sluice
spill
spillway
splashing
stream
tower
turbine
wales
water
waterfall
waterway
wave
weir