Itchen Navigation: Distance Table and Dimensions
In its final form the Navigation had 15 locks and 2 half-locks (with a single pair of gates at each) with a combined rise of about 105 feet (32 metres) from mean sea level at Woodmill to Winchester.
The locks were capable of passing boats about 70 feet long with a beam of 13 feet (21.3m x 4.0m). The barges used were capable of carrying between 25 and 45 tons, but, often, poor maintenance of the waterway meant a full cargo could not be carried.
|Place||From Black Bridge||From Northam Quay|
|Black Bridge and Blackbridge Wharf, Winchester||0.0||0.0||12.4||20.0|
|St Catherine Lock||1.0||1.6||11.4||18.4|
|Twyford Lane End Lock||1.5||2.5||10.9||17.5|
|Junction with main river||1.6||2.6||10.8||17.4|
|Tumbling Bay (hatches)||1.8||2.8||10.6||17.2|
|Shawford Single Gates||2.7||4.3||9.7||15.7|
|College Mead Lock||3.7||6.0||8.7||14.0|
|Brambridge Single Gates||4.5||7.3||7.9||12.7|
|Barton Bay (junction with Barton River)||6.6||10.5||5.8||9.5|
|Stoke Bridge, Bishopstoke||6.9||11.1||5.5||8.9|
|Fish House Bay (junction with Barton River)||7.3||11.7||5.1||8.3|
|Chicken Hall Railway Bridge||7.9||12.6||4.5||7.4|
|Lock House Lock||8.2||13.2||4.2||6.8|
|M27 Motorway crossing||9.6||15.5||2.8||4.5|
|Mans Bridge (junction with main river, navigable to Gaters Mill)||9.8||15.9||2.6||4.1|
It should be noted that the above distances relate to length of the Navigation when in use. The M27 Motorway crossing has caused a diversion of the public footpath adding 0.4 miles (0.7 km) to the length of the path.
The main river upstream of Mans Bridge was navigable to Gaters Mill (formerly Westend Mills) for a distance of 0.3 miles (0.5 km).