浸水区域図（深さ1．5インチ＝３．８ｃｍ以上）
http://www.chron.com/news/local/article/Maps-show-what-Harvey-s-weekend-impact-would-look-12161601.php?utm_content=chron_ap_zonec_ctrl_v1&;ipid=chronapctrlreccos#photo-14020826

大体、四国＋九州くらいの面積が水没