Without human intervention during this time salt water flooded parts of the island making it unsuitable for agricultural use. Havergate Island was formerly an extra-parochial area, in 1868 it became a civil parish and by 1961 the parish was unpopulated.
Without human intervention during this period, saltwater flooded parts of the island rendering it unsuitable for farming. Havergate Island, formerly an area outside the jurisdiction of a parish, became one in 1868 and was uninhabited by 1961.