Geospatial Information Authority of Japan reported land subsidence on the height of triangulation station measured by GPS from previous value on 14 April 2011.
- Miyako, Iwate - 0.50 m (1.64 ft)
- Yamada, Iwate - 0.53 m (1.73 ft)
- Ōtsuchi, Iwate - 0.35 m (1.14 ft)
- Kamaishi, Iwate - 0.66 m (2.16 ft)
- Ōfunato, Iwate - 0.73 m (2.39 ft)
- Rikuzentakata, Iwate - 0.84 m (2.75 ft)
- Kesennuma, Miyagi - 0.74 m (2.42 ft)
- Minamisanriku, Miyagi - 0.69 m (2.26 ft)
- Oshika Peninsula, Miyagi - 1.2 m (3.93 ft)
- Ishinomaki, Miyagi - 0.78 m (2.55 ft)
- Higashimatsushima, Miyagi - 0.43 m (1.41 ft)
- Iwanuma, Miyagi - 0.47 m (1.54 ft)
- Sōma, Fukushima - 0.29 m (0.95 ft)
Scientists say that the subsidence is permanent. As a result, the communities in question are now more susceptible to flooding during high tides.
