Tangjiashan Flood Alert Lifted And Latest Satellite Images

The outflow from the Tangjiashan quake lake has slowed to 56 cu. meters a second and the water level has dropped nearly 30 meters from its peak, officials said Wednesday. They have also lifted the flood alert as fears of downstream flooding receded. At those outflow rates the lake is likely to fill up a bit again, though the sluicing operation will keep the level at around 20 meters below the peak.

NASA satellite images (pdf), snapshots below, show the Jiangjiang River downstream from the quake lake before and after the sluicing. The top image, taken on June 8th, shows the river slow-moving and hampered by landslides. The lower image, taken on June 10th, shows the river as a torrent, submerging land along its banks, and flooding over the landslide that was previously visible in the upper picture. Its color indicates that it carries considerable sediment, including sediment from the breached landslide upstream.

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