accumulation
alternative
architecture
built
close up
closeup
concept
concrete
construction
dam
detail
electric
electricity
energy
environment
europe
generation
high
hydro
hydroelectric
hydropower
industrial
industry
infrastructure
lake
nature
nobody
outdoor
plant
power
renewable
reserve
reservoir
resource
retaining
river
source
spain
spillway
station
storage
structure
technology
wall
water
works