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Itchen Navigation
One of the disused locks, that now functions as a weir (identified as number 11 on the plan below)
Original Owner	Itchen Navigation Company
Date of Act	1655
Date of first use	1705?
Date Closed	1920s
Start Point	Winchester 51°03′32″N 1°18′32″W / 51.059°N 1.309°W / 51.059; -1.309
End Point	Swaythling 50°56′08″N 1°22′33″W / 50.93555°N 1.37583°W / 50.93555; -1.37583
Locks	17
Status	Limited restoration

Itchen Navigation

legend Winchester Blackbridge Wharf 1 St Catherines lock Hockley Railway Viaduct 2 Twyford Lane End lock 3 Compton lock 4 Shawford single gates 5 Malm lock 6 College Mead lock 7 Brambridge lock 8 Brambridge single gates 9 Allbrook lock B3335 bridges Railway bridge Railway bridge 10 Withymead lock 11 Stoke lock B3037 bridges 12 Conegar lock Eastleigh Railway bridges 13 Lock House lock 14 Decoy Pond lock 15 Sandy lock M27 motorway embankment 16 Mansbridge lock A27 bridge 17 Woodmill lock Bitterne

The Itchen Navigation is an approximately 10 mile long disused canal system in Hampshire, England, that provided an important trading route from Winchester to the sea at Southampton for about 150 years.^[1][2] The canal was opened in 1710 but had fallen into disuse by 1869.^[3] It provided an important method of moving goods, particularly agricultural produce and coal between the two cities and the intervening villages. On its completion it was capable of taking shallow barges of around 14 feet in width and 70 feet in length. Its waters are fed from the River Itchen, which also forms part of the navigation itself. The tow path alongside the canal forms part of the Itchen Way, and is a popular destination for walkers.^[4]

Construction

The River Itchen had been commercially important since Norman times, and Winchester's status as the capital city of England was partly due to this link to the sea.^[5] Construction of the canal was authorised by an Act of Parliament in 1665, although completion took over 50 years. The canal was designed as a combination of artificial cut ways together with sections of the River Itchen that were already navigable. At one point a link was proposed to the Basingstoke Canal, however this was never started.^[6][7]

Route

The official head of the canal starts at Winchester, marked by a simple stone bridge. It flows past the grounds of Winchester College before being diverted through a culvert under the M3 motorway. Originally this was a full headroom tunnel, but saw substantial changes during the construction of this section of the M3. The canal passes Twyford Down, and continues South flowing past the village of Twyford. Here a weir marks the remains of one of the 15 turf locks that were originally incorporated into the system. A leat from this stretch was created at around the time of the construction of the canal to provide water for the Twyford Mead water meadows. Farming of the water meadows continued until around 1930, after the closure of the navigation itself. The canal flows on past Compton and Shawford then through to Bishopstoke. Eventually the canal merges into the River Itchen as it approaches the Solent. ^[6]

The map shows the navigation in deep blue, (or green for the drained section), in order to distinguish it from the river, shown in light blue. Deep blue is normally used to represent navigable waterways, but is used here for clarity.

Closure and restoration

Eventually newer technologies of road and rail led to the canal falling into disuse. Lengths of the canal system were drained or allowed to overgrow with vegetation. Increasingly the difference between the canal and the river became less obvious, although it is still possible to identify remains of the original locks. In 2005 a request was made to the Heritage Lottery Fund in the United Kingdom for funds to restore the watercourse. Known as The Itchen Navigation Heritage Trail Project, funding was granted and restoration is now underway.^[2] The navigation has been designated a European Special Area of Conservation as well as a Site of Special Scientific Interest, due to the rich diversity of wildlife found along the system, as well as its historical importance. ^[2]

References