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Page 1: The Breaching of a Dam

FREEING THE ELWHA

The Breaching of a Dam

O The Earthen Dam

Page 2: The Breaching of a Dam

FREEING THE ELWHA

The Earthen Dam is Leaking Water from the

Base

All Dams Leak!

Page 3: The Breaching of a Dam

FREEING THE ELWHA

The Pressure of the Lake is Causing the

Base to Rupture

Heavy Rains Are Causing the Lake to

Top the Dam

Page 4: The Breaching of a Dam

FREEING THE ELWHA

The Lake Has Topped the DamCausing it to Erode

into it and Releasing a Torrent

Page 5: The Breaching of a Dam

FREEING THE ELWHA

The Erosive Channel is So Deep, the Entire

Lake Drains

Devastating Downstream Communities

Page 6: The Breaching of a Dam

FREEING THE ELWHA

The Torrent is Stripping Pieces of the Foundation

Away

Page 7: The Breaching of a Dam

FREEING THE ELWHA

The Dam Structure Remains Mostly Intact

Page 8: The Breaching of a Dam

FREEING THE ELWHA

The Lake Has Drained and the Torrent is Over

Page 9: The Breaching of a Dam

FREEING THE ELWHA

Time to Clean Up From the Flood Waters

Page 10: The Breaching of a Dam

FREEING THE ELWHA

This project was made possible in part by a grant from

Washington’s National Park Fund.


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