The second stage is to close the left bank main river bed, divert the stream to the right bank open channel and build the spillway section in the mian river bed and the powerhouse on the left bank.

二期工程围左岸主河床 ，右岸明渠 （建于一期 ）导流 ，建主河床泄洪坝段及左岸电站厂房。

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Officials said the spillway gates are likely to be open for weeks, and it will be weeks before the river falls below flood stage, allowing those who have evacuated to return safely.

CNN: STORY HIGHLIGHTS

Spillway gates are likely to be open for weeks, meaning it will be some time before the river falls below flood stage, allowing evacuees to return.

CNN: Mississippi governor urges caution as river crests

Some of the spillway's gates will likely be open for weeks, and it'll be at least that long before the river falls safely below flood stage and those who have evacuated can safely return, said Col.

CNN: STORY HIGHLIGHTS