The Great East Japan Earthquake damaged 1587 prefecture government facilities and caused JPY 133.2 billion ($1.64 billion) in damages. This total is only for prefecture facilities and does not include damage to national and municipal facilities.
The largest single category was fishing harbors: 16 harbors received JPY 42.5 billion in damage. Another 209 cases of harbor damage total JPY 32.9 billion, and 223 cases of damage to rivers total JPY 15.6 billion.
The Ibaraki Shimbun, online edition, 2011/5/26, (ja), http://www.ibaraki-np.co.jp/news/news.php?f_jun=13063342937913 (accessed 2011/5/26)