beams
clouds
concrete
converging
dam
ecology
electric
electrical
electricity
energy
flood
flow
flowing
force
forest
galloway
gates
generator
green
hydro
hydroelectric
hydroelectricity
hydropower
industrial
industry
lake
light
lines
loch
night
open
overflow
park
plant
power
powerful
rays
reflection
reservoir
river
rushing
sky
spillway
station
steel
structure
technology
voltage
water
waterfall