
Visible from space,
the world’s largest dam
measures more than seven football fields.
Constructed over generations,
the dam holds back run off
from Canada’s Birch Mountains.
Shaped in an arc,
the dam is composed
of connected arches.
Through brutal cold,
blizzards of snow,
the force of gravity,
the dam remains.
In 1978,
beavers returned
to a patch of woods
in Fairfax, Virginia.
Setting to work,
the builders began
to shape a wetland.
Today’s massive ecosystem
owes it origins
to those first beavers —
red-shouldered hawks, barred owls,
coyote, fox,
tree frogs, ribbon snakes,
marbled salamanders,
belted kingfisher,
yellow crowned night herons.
This morning
I watched a lone beaver
leave his lodge,
floating on the surface
of a warming pond.
Sixty degrees
appears tempting,
even for a nocturnal creature.
Evidence of spring
dots the margins of the wetland —
robins, frogs,
and freshly felled trees.
Soon,
the beaver will be joined
by family members
who swam the pond
last spring,
ready to repair and renew.








