Elwha Dam Constructed

1910
Elwha Dam
Constructed
First dam on the Elwha River constructed
in 1910. This dam blew out in 1912 and was
replaced with a stronger structure by 1913.
Thereafter the river was no longer
free-flowing and anadromous fish were
blocked from the upper reaches of the
river and its tributaries.

Submitted by @Ritterton