Sandy River
Marmot Dam Multimedia Gallery

Breach begins On Oct. 19, 2007, with the river rising, sump pumps under the earthen dam were removed, and crews with heavy equipment filled in the diversion channel.

Bull Run Hydro: Pre-demolition Marmot Dam Marmot Dam fish ladder High runoff at Marmot Dam Bull Run Powerhouse Bull Run generator Wooden box flume Marmot Dam demolition Before the blast Marmot Dam explodes Dam explosion Dam demolition begins Demolition work Earthen dam breach Earthen coffer dam Breach begins Dam is breached Upstream view of breach Stream of water increases Water gathers force Twenty minutes after breach Videos Marmot Dam demolition ceremony (2:00) Time-lapse of concrete dam destruction (0:67) Dramatic breach of earthen dam (3:10) Time-lapse of washout (0:56)