Strait of Dover

The Strait of Dover, at the Channel's eastern end is also its narrowest point, while its widest point lies between Lyme Bay and the Gulf of Saint Malo near the midpoint of the waterway.^[1] It is relatively shallow, with an average depth of about 120 m (390 ft) at its widest part, reducing to a depth of about 45 m (148 ft) between Dover and Calais. From there eastwards the adjoining North Sea continues to shallow to about 26 m (85 ft) in the Broad Fourteens where it lies over the watershed of the former land bridge between East Anglia and the Low Countries. It reaches a maximum depth of 180 m (590 ft) in the submerged valley of Hurds Deep, 30 mi (48 km) west-northwest of Guernsey. The eastern region along the French coast between Cherbourg and the mouth of the Seine river at Le Havre is frequently referred to as the Bay of the Seine (French: Baie de Seine).