Chelmsford topographic map

Average elevation: 7 ft

In 1607 the Elizabethan antiquarian William Camden noted in his work Britannia (a topographical and historical survey of all of Great Britain and Ireland) that Canvey Island (which he called Island Convennon) was documented in the 2nd century by the Alexandrian geographer Ptolemy. In his work Geographia,…

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Average elevation: 46 ft

Average elevation: 135 ft

Average elevation: 292 ft

Average elevation: 154 ft