CCQ-1991 - Civil Code of Québec

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967. If, by sudden force, a watercourse carries away a large and recognizable part of a riparian land to a lower land or to the opposite bank, the owner of the part carried away may reclaim it.
The owner is bound, on pain of forfeiture, to reclaim the part carried away within one year after the owner of the land it has attached to takes possession of it.
1991, c. 64, a. 967.