Thornes Lock On Calder And Hebble Navigation - Wakefield, UK
Posted by: Groundspeak Premium Member dtrebilc
N 53° 39.925 W 001° 30.344
30U E 598729 N 5947334
Quick Description: This is the 2nd lock on the canal from the start at Fall Ings, Wakefield.
Location: Yorkshire, United Kingdom
Date Posted: 2/15/2015 10:01:25 AM
Waymark Code: WMNCPM
Published By: Groundspeak Premium Member cache_test_dummies
Views: 0

Long Description:

The Calder and Hebble Navigation
The Calder and Hebble Navigation completed in 1770 consisted of artificial improvements to the River Calder and River Hebble to allow canal boats use what used to be un-navigable rivers.

It ran for 21 miles from the Aire and Calder Navigation at Wakefield to Sowerby Bridge, was one of the first navigable waterways into the Pennines. It was an extension westwards of the Aire and Calder Navigation.

Work began in 1758 to make the River Calder navigable above Wakefield. The navigation to Sowerby Bridge was completed in 1770, including a short branch to Dewsbury.

In 1828 a branch to Halifax was opened, rising 110 feet to a terminus at Bailey Hall, behind Halifax Railway Station. There were 14 locks on the branch which closely followed the route of the River Hebble. Most of the branch was abandoned in 1942 apart from the short section from Salterhebble to Exley.

About half of the navigation is along the course of the River Calder, with short man-made cuts with locks to by-pass weirs. There are two lengthy man-made sections, from Calder Grove to Ravensthorpe and from Brighouse to Sowerby Bridge.

Most commercial traffic on the Calder and Hebble had ceased by 1955, although coal was still carried to Thornhill power station until 1981. However, the whole of the Calder and Hebble remained open for leisure use. The re-opening of the Rochdale Canal between Sowerby Bridge and Littleborough summit in 1996 and Manchester in 2002 has increased the traffic along the Calder and Hebble and it now forms part of the South Pennine Ring.

Thornes Lock
This lock is at the downstream end of one of the short artificial navigation cuts that bypass the main course of the river Calder.

Because this lock is at the junction with River Calder great care has to be taken when the river water level is high or in flood. This lock is a true lock, but may be closed for operation during flood conditions.

At the junction with the river a coloured indicator board acts as a visual guide as to whether it is safe to use the lock gates. Green indicates it is safe to use, orange means take care and red indicates it is too dangerous to use the lock.

When the canal was first built and used commercially boats were more likely to use the lock in times of high river water. These days the lock gates are usually locked shut when the water level rises to prevent accidents.

Most of the locks on Calder and Hebble are only 57.5 feet long, but at this point it is near the junction withe the Aire And Calder Navigation. The Aire and Calder becomes much wider than this canal and can take larger and longer boats. A small number of locks at the eastern end of the Calder and Hebble were longer with a double pair of gates.

These double gates allowed the longer boats to enter this stretch of the Calder and Hebble. However when the shorter boats of the Calder and Hebble Navigation used the lock the middle gates were used, effectively making it shorter and saving water.

These days the longer boats from the Aire and Calder Navigation are no longer allowed on the Calder and Hebble and one set of gates always remain open and only the smaller lock used.

Each end of the lock has a double pair of gates. On this canal all the lock gates have paddles built into them to let water in or out of the lock and in some cases there are also paddles on the canal side.

Each set of gates has wooden platforms to stand on when operating the gate paddles. In the case of the top gates the platforms stretch the full length of the gate to give access to both sides of the canal.

All the locks on this canal have a beam of 14 feet and are wide enough to take 2 narrow boats side by side. In addition although the locks are only 57 and ½ feet long they can accommodate narrow boats of up to 60 feet if they enter the lock diagonally and with extreme care. Although they are wide most of the locks on this canal are quite shallow and at only 2 metres the rise is not very high.
Waterway Name: Calder and Hebble Navigation

Connected Points:
Connects the Rochdale Canal at Sowerby Bridge with the Aire and Calder Navigation at Wakefield. There was also a branch of the canal at Salterhebble that used to go to Halifax but this was closed in 1942. There is also a junction with the Huddersfield Broad canal at Cooper Bridge that goes to Huddersfield.

Type: Lock

Date Opened: 1/1/1770

Elevation Difference (meters): 2.00

Site Status: Operational

Web Site: [Web Link]

Date Closed (if applicable): Not listed

Visit Instructions:
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