built
canal
cascade
concrete
dam
development
electrical
electricity
energy
environment
environmental
europe
extraction
floodgate
flow
green
horizontal
hydro
hydroelectric
hydropower
illuminated
landscape
lights
location
lock
nature
overflow
plant
power
powerplant
production
regulation
renewable
reservoir
river
sluice
station
structure
sustainable
system
upper
wall
water
waterfall
weir
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