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Runcorn Gap

River Mersey
River
Liverpool skyline from the Mersey Ferry - 2012-05-27.JPG
The River Mersey at Liverpool, looking towards the Royal Liver Building
Country England
Counties Greater Manchester, Cheshire, Merseyside
City Liverpool
Primary source (source of the River Tame)
 - location west of Buckstones Moss, West Yorkshire
 - elevation 473 m (1,552 ft)
 - coordinates 53°37′07″N 2°00′13″W / 53.6187°N 2.0035°W / 53.6187; -2.0035
Secondary source (confluence of Tame and Goyt)
 - location , Greater Manchester
 - elevation 40 m (131 ft)
 - coordinates 53°24′51″N 2°09′23″W / 53.4143°N 2.1565°W / 53.4143; -2.1565
Mouth
 - location Liverpool Bay
Length 112 km (70 mi)
Basin 4,680 km2 (1,807 sq mi)
Designation
Official name Mersey Estuary
Designated 20 December 1995
River Mersey map.png
The River Mersey is highlighted in red
Click to enlarge map
Coordinates: 53°27′00″N 3°01′59″W / 53.45°N 3.033°W / 53.45; -3.033

The River Mersey /ˈmɜːrzi/ is a river in the north west of England. Its name is derived from the Anglo-Saxon language and translates as "boundary river". The river may have been the border between the ancient kingdoms of Mercia and Northumbria and for centuries it formed part of the boundary between the historic counties of Lancashire and Cheshire.

The start of the Mersey is at the confluence of the River Tame and River Goyt in . It flows westwards through the suburban areas of south Manchester, then into the Manchester Ship Canal at Irlam, becoming a part of the canal and maintaining the canal's water levels. After 4 miles (6.4 km) the river exits the canal flowing towards Warrington where the river widens before it then narrows as it passes between the towns of Runcorn and Widnes. From Runcorn the river widens into a large estuary, which is 3 miles (4.8 km) wide at its widest point near Ellesmere Port. The course of the river then heads north as the estuary narrows between Liverpool and Birkenhead on the Wirral Peninsula to the west and empties into Liverpool Bay. In total the river flows 70.33 miles (113 km).


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