Abstract: A portable water evacuator generally comprising a cylindrical housing which is adapted to seat over and about the drain opening to contain any water within the housing which should back up through the drain. Within the cylindrical housing is disposed a submersible sump pump for discharging the water collected in the cylindrical housing to a distant point remote from the basement. With the portable water evacuator, when conditions are such that a heavy rain could cause flooding, the water evacuator can be placed over the drain, on a temporary basis. If the water does back up through the drain, the water will be collected in the cylindrical housing and discharged from the basement by the operation of the sump pump. The sump pump stands energized ready for operation, however, the pump is not actuated unless water actually is collected in the cylindrical housing.