A combo photo shows a view of the earthquake-hit county of Beichuan before the flooding and after a controlled draining of the nearby Tangjiashan lake (in red frame) on Tuesday. [Agencies]
Water gushed out of the quake lake, the largest of the more than 30 formed by landslides triggered by the May 12 earthquake, after soldiers blasted the boulders and mud blocking the flow in channel.
More than half of the lake's 250 million cu m of water has flown out since soldiers and policemen dug open the channel on Saturday morning, the lake emergency rescue headquarters said yesterday.
The lake's dam is more secure too because the channel is deeper now, easing the pressure of water on the wall.
The water level in the quake lake had dropped to 720-721 m above the sea level by 5 pm, nearly 20 m below the highest, or the overflowing point. This means the outflow is now higher than the inflow, experts with the headquarters said.
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