accumulation
blue
built
clear
concept
concrete
dam
daytime
electric
electricity
energy
engineering
from below
generation
gravity
high
hydroelectric
hydropower
industry
infrastructure
lake
landscape
masonry
mountain
nature
nobody
outdoor
plant
power
public
renewable
reserve
reservoir
retaining
river
rock
rural
scene
sky
station
stones
storage
structure
up
wall
water
works