...a flooded settlement, but there is no lease agreement?
Yes, provided there is other documentary confirmation of the fact of living in a flooded settlement.
Such a document can be:
military ID;
occupational license;
a document confirming ownership of property;
a certificate of education or a certificate from the place of study;
a document on placement of a child in a children's institution, in a foster family, family-type orphanage, establishment of guardianship or care;
documents of health care institutions.