Now the River Wantsum is little more than a drainage ditch starting at Reculver, and ending where it joins the Stour.
[1] In 1414 there was still a ferry crossing the Wantsum at Sarre, but by 1550 Thanet was no longer an island.
At Reculver, the Romans built a fort that was about 1 mile (1.6 km) from the sea, whereas Leland, in the early 16th century, described Reculver as being 1⁄4 mile (400 m) from the sea, and the great storm of 1809 carried away half of the fort.
It is postulated that the eroded material was carried along the shore and blocked the northern mouth of the Wantsum.
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