On 7/21/2015, Tepco announced Fukushima plant area has irregularly sunk since 311.
It has been known that the reference point sank by 709 mm but Tepco has not reported the height above the sea level of each building.
The report reads Reactor 1 turbine building sank by 730 mm, Reactor 2 by 725 mm, Reactor 3 by 710 mm, Reactor 4 by 712 mm.
However the readings of reactor buildings were not published for some reason.
The buildings can be inclining due to this irregular sinking but the inclining degree has not been announced either.
Source: Fukushima Diary