Thornes Flood Lock On Calder And Hebble Navigation - Wakefield, UK
Posted by: Groundspeak Premium Member dtrebilc
N 53° 39.775 W 001° 31.119
30U E 597880 N 5947038
Quick Description: This flood lock is at a junction of the Calder and Hebble Navigation and the River Calder. The gates are normally left open and were only used as a lock when the water level on the river is sightly higher than the navigation.
Location: Yorkshire, United Kingdom
Date Posted: 2/15/2015 8:41:28 AM
Waymark Code: WMNCNZ
Published By: Groundspeak Premium Member cache_test_dummies
Views: 1

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

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. In those times the gates acted as a true lock, though with only a very small difference in water levels. These days the lock gates are usually locked shut when the water level rises to prevent accidents.

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.
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): .00

Site Status: Other

Web Site: [Web Link]

Date Closed (if applicable): Not listed

Visit Instructions:
Logs marked as “visits” should be made after physically visiting the waymark location. Include a picture taken during the visit. Notes may be logged by individuals who have visited the web site or looked at the online information and would like to provide comments or feedback on the waymark.
Search for...
Geocaching.com Google Map
Google Maps
MapQuest
Bing Maps
Nearest Waymarks
Nearest Waterway Locks, Planes and Lifts
Nearest Geocaches
Nearest Benchmarks
Create a scavenger hunt using this waymark as the center point
Recent Visits/Logs:
There are no logs for this waymark yet.