Maasdam Maasdam Maasdam 1812 Maasdam MULTIPOLYGON(((4.550327 51.804077,4.570496 51.79523,4.570262 51.784172,4.558511 51.784809,4.556238 51.783824,4.555348 51.783438,4.551753 51.781885,4.546371 51.775738,4.544942 51.774106,4.54583 51.76834,4.54806 51.762938,4.547498 51.758838,4.543819 51.761983,4.541841 51.765272,4.541337 51.770868,4.539331 51.776251,4.539253 51.776281,4.537791 51.77684,4.534689 51.779964,4.517653 51.784154,4.514701 51.786918,4.51436 51.789522,4.510863 51.790485,4.517363 51.799163,4.522568 51.79992,4.535096 51.796776,4.541179 51.79709,4.550327 51.804077))) 1818 Maasdam MULTIPOLYGON(((4.556238 51.783824,4.553174 51.787592,4.546866 51.790193,4.544181 51.794889,4.541179 51.79709,4.550327 51.804077,4.570496 51.79523,4.570262 51.784172,4.558511 51.784809,4.556238 51.783824))) 1832 Maasdam MULTIPOLYGON(((4.570496 51.79523,4.570262 51.784172,4.558511 51.784809,4.555348 51.783438,4.551753 51.781885,4.544942 51.774106,4.537791 51.77684,4.534689 51.779964,4.517653 51.784154,4.514701 51.786918,4.51436 51.789522,4.510863 51.790485,4.517363 51.799163,4.522568 51.79992,4.535096 51.796776,4.541179 51.79709,4.550327 51.804077,4.570496 51.79523))) 1984-01-01