architecture

barrier

blue

bridge

building

cascade

control

dam

electric

electricity

energy

engineering

environment

falling

flood

flow

force

fuel

generate

generator

horizontal

hydro

industrial

industry

landscape

nature

outdoor

pouring

power

release

reservoir

reset

resource

river

scenery

sky

sluice

station

stock

supply

technology

turbine

view

volgograd

voltage

volts

wall

water

waterfall

watts