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FAST FACTS
Beavers are rodents. Their The beaver
largest ancestor, Castoroides Human 6 ft dam is wider
or ancient giant beaver, was (1.8 m) tall than two
the size of a grizzly bear. Hoover
Dams.
Castoroides 8 ft
(2.5 m) long
Modern beaver
4 ft (1.25 m)
long
The Hoover Dam
is 1,205 ft (367 m)
wide at the top.
Water makes turbines spin,
creating hydroelectric power.
The more water, the more
energy is produced.
How big
can beaver The Hoover Dam contains
17 generators that produce
in excess of four billion
dams get? kilowatt hours of
electricity every year.
One of the largest structures ever built by animals
is a beaver dam in Alberta, Canada. It contains two
beaver lodges and measures 2,800 ft (850 m) wide.
US_254-255_309600_Dam.indd 254 19/12/17 3:48 pm
