Read : TANSUI MENSEKI
Also known as -
Unit: ha/km² (ha/km²)
The waterlogged area is the area of the dam lake that is always at full water level. It is the area enclosed by the line where the highest water level of the dam lake meets the shore. A large waterlogged area does not necessarily mean a large total storage capacity. Incidentally, the word "waterlogged" means "filled with water. The word "waterlogged" also means "filled to the brim with liquid or other substance.
As of November 2009, the dam with the largest surface area is the Uryu First Dam (0040-Uryu Daiichi Dam) in Hokkaido.
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