DAM「石田川ダム」
2013/05/26 Rock-fill dam.
The crest roller gate 2 gate
The orifice roller gate 1 gate
The many holes type slide gate 5 gate
2013/05/26 Rock-fill dam.
The crest roller gate 2 gate
The orifice roller gate 1 gate
The many holes type slide gate 5 gate
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