The present invention relates to a floating matter removal device for a buoyancy type clogging block, and when the clogging block rises by the buoyancy of water on the embankment when a river overflows due to a flood, by pressing the compression part of the flexible shroud to contact the side of the clogging block. It has an effect of blocking water from flowing into the embankment, and prevents water flowing into the gap between the water curtain block that rises and descends according to the change of the water level and the receiving unit that houses the water barrier block from leaking and flowing over to the embankment. However, by configuring the floating matter removal module to automatically operate when the water curtain block goes up and down, it is possible to effectively remove the floating matter floating in the river.
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