1930s
30s
affluent
altai
architecture
bridge
bubbles
built
bulkhead
concrete
construction
dam
design
electric
electricity
energy
engineering
environment
environmental
generating
generation
generator
horizontal
hydraulic
hydro
hydroelectric
hydropower
industry
nature
outdoors
plant
platform
power
pumped
rapid
retro
river
scenics
station
stock
storage
store
structure
summer
supply
technology
turbine
turquoise
water
waterpower