龍ケ崎市の河川en-ushttp://www.mapbuilder.net/users/rmizu1/19311180MapBuilder.Net226554Fri, 02 Jun 2006 00:28:50 -0400http://www.mapbuilder.net/users/rmizu1/19311ushiku numa desu 牛久沼 35.94632704841525 140.129156112670935.94632704841525140.1291561126709227309Fri, 02 Jun 2006 03:45:34 -0400http://www.mapbuilder.net/users/rmizu1/19311破竹川 35.907857346364345 140.2586102485656735.907857346364345140.25861024856567227308Fri, 02 Jun 2006 03:44:08 -0400http://www.mapbuilder.net/users/rmizu1/19311透視度ＣＯＤアンモニア亜硝酸ｐＨ 35.941636623438804 140.2534174919128435.941636623438804140.25341749191284227310Fri, 02 Jun 2006 03:46:21 -0400http://www.mapbuilder.net/users/rmizu1/19311江川 35.89888881892722 140.200331211090135.89888881892722140.2003312110901