The Dolagarrog disaster in 1925 affected the whole community and
was cause for lamentation for decades. It is still remembered and memorialised. Stories, old photos
and memories of Dolgarrog.
 |
Richard Roberts and his family. Mr Roberts saved his family at
the risk of his own life.
|
On Monday 2 November 1925, after two weeks of heavy rain, a
breach in a small gravity dam occurred at the Aluminium Corporation's Llyn
Eigiau reservoir, up in the hills near 735 m high Craig Eigiau. This was
claimed at the time to have been caused by inadequate foundations and lack of
maintenance.
This breach released thousands of gallons of water which flowed
down along the course of the Porth Llwyd river to another small reservoir, the
Coedty. This reservoir could not contain the extra water and breached also,
releasing an even greater quantity of water, possibly some 350 million cubic
meters, which carried huge boulders and pieces of pipeline down the mountain
through Porth Llwyd hamlet and the village of Dolgarrog a mile below, sweeping
houses and villagers away as it went. Sixteen people died.
The water poured like a river down the streets and among the
great boulders until the reservoirs were emptied. The church was swept away,
its bell tolling as it went. Villagers were swept away, one family clinging to
debris and singing hymns as they battled for their lives.