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River Bollin
River Bollin under southern runway of manchester airport arp.jpg
The River Bollin flows beneath the southern runway of Manchester Airport in this tunnel
River Bollin catchment area.png
The River Bollin and its tributaries within its catchment area. The direction of flow is east to west. Also shown is the sub-catchment area of the River Dean.
CountiesCheshire, Greater Manchester
Physical characteristics
 • locationMacclesfield Forest, Cheshire
 • coordinates53°14′30″N 2°02′23″W / 53.2418°N 2.0397°W / 53.2418; -2.0397
 • elevation300 m (980 ft)
MouthManchester Ship Canal
 • location
Warburton, Greater Manchester
 • coordinates
53°23′46″N 2°28′43″W / 53.3961°N 2.4786°W / 53.3961; -2.4786Coordinates: 53°23′46″N 2°28′43″W / 53.3961°N 2.4786°W / 53.3961; -2.4786
 • elevation
11 m (36 ft)
Length49 km (30 mi)
Basin features
 • rightRiver Dean

The River Bollin is a major tributary of the River Mersey in the north-west of England.

It rises in Macclesfield Forest at the western end of the Peak District, and can be seen in spring form, from the Buxton to Macclesfield road. The stream then descends the 10 miles (16 km) through Macclesfield and The Carrs Park in Wilmslow where it has a confluence with the River Dean, near to Styal Prison. For the following 10 miles (16 km) it defines the southwestern portion of the border between Greater Manchester and Cheshire before merging with the River Mersey north of Lymm. It flows through the Styal country park and was used in the cotton calico factory there, Quarry Bank Mill, as a source of power. Near to the Quarry Bank Mill site there is a natural weir. The Bollin is culverted underneath the southern runway of Manchester Airport.

The town of Macclesfield used to dispose all its waste and sewage into the Bollin. The profusion of human sewage in the Bollin was still common in 1850.