Great Cob island is a small island in the estuary of the River Blackwater in Essex, England, the United Kingdom. The island is an area of low-lying salt marsh in the tidal channel known as Virley Channel that runs to the east of the village of Tollesbury. Long and narrow in shape, it is around 900 metres (3,000 ft) in length and around 100 metres (330 ft) at its widest. It lies just to the south of the RSPB nature reserve of Old Hall Marshes.[1]

Great Cob Island

View across Tollesbury marshes to Great Cob Island with West Mersea in the distance.
Great Cob Island
Geography
Location	Blackwater Estuary
Coordinates	51.762°N 0.878°E / 51.762; 0.878
Length	0.9 km (0.56 mi)
Width	0.1 km (0.06 mi)
Administration
England
County	Essex
Borough	Maldon
Demographics
Population	0

See also

• Cobmarsh Island
• Northey Island
• Osea Island
• Sunken Island

References

Wikimedia Commons has media related to Great Cob Island.