Water levels of the Birmingham Canal Navigations

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The BCN New Main Line (Birmingham Level) running to the left of the New Smethwick Pumping Station. The BCN Old Main Line (Wolverhampton Level) runs 20 ft higher, to the right of the building. New Smethwick Pumping Station 2.jpg
The BCN New Main Line (Birmingham Level) running to the left of the New Smethwick Pumping Station. The BCN Old Main Line (Wolverhampton Level) runs 20 ft higher, to the right of the building.
Another view of the New Smethwick Pumping Station, with the Wolverhampton Level to the right and the Birmingham Level on the left New Smethwick Pumping StationGC.jpg
Another view of the New Smethwick Pumping Station, with the Wolverhampton Level to the right and the Birmingham Level on the left

The Birmingham Canal Navigations (BCN), a network of narrow canals in the industrial midlands of England, is built on various water levels. The three longest are the Wolverhampton, Birmingham, and Walsall levels. Locks allow boats to move from one level to another.

Contents

Heights given are nominal elevation above sea level in feet relative to the Ordnance Datum Liverpool.

533 ft Essington Branch

A former branch of the Wyrley and Essington Canal, the Essington Branch was abandoned before 1904 and is now filled in. It was the highest level on the BCN.

511 ft Titford Summit

The highest canal currently in BCN, 1 mile of which remains navigable. It was fed from the 18th century Titford Reservoir (now under Junction 2 of the M5 motorway) originally by feeder, and since 1837 by the Titford Canal. A feeder from the Tat Bank Branch (also known as Spon Lane Branch) supplies water to Edgbaston Reservoir.

491 ft Brindley's Smethwick Summit

A historical level, no longer existing. The highest level designed by James Brindley for his Birmingham Canal (BCN Old Main Line). Removed by John Smeaton's design in 1790.

473 ft Wolverhampton Level

Valve house below Edgbaston Reservoir, early feed to the Wolverhampton Level along the Smethwick feeder Edgbaston Reservoir outflow high level valvehouse 05.jpg
Valve house below Edgbaston Reservoir, early feed to the Wolverhampton Level along the Smethwick feeder

A total of 41.7 miles navigable without locks:

453 ft Birmingham Level

Engine Arm Aqueduct carrying the Engine Arm (Wolverhampton Level) over the New Main Line (Birmingham Level). Engine Arm Aqueduct levels.jpg
Engine Arm Aqueduct carrying the Engine Arm (Wolverhampton Level) over the New Main Line (Birmingham Level).
Valve house below Edgbaston Reservoir feeding the Birmingham Level Edgbaston Reservoir outflow low level valvehouse 94.jpg
Valve house below Edgbaston Reservoir feeding the Birmingham Level

A total of 49.2 miles at this level (21.2 miles of which is on the BCN) navigable without locks.

Connecting canals, not part of the BCN, but using this level:

441 ft Dudley No. 1

408 ft Walsall Level

A total of 13.4 miles navigable without locks.

Reservoirs

To keep the canals topped up with water, reservoirs were built to collect water from streams. These had to be above the relevant canal levels, often some distance away. The small Titford Reservoir (Titford Pool), as well as feeding the Titford Canal supplies its surplus water to Edgbaston Reservoir along a feeder through Smethwick. Water from Edgbaston Reservoir feeds the Birmingham Level at the adjacent Icknield Port Loop, and once fed the Wolverhampton Level via a long feeder (now overgrown and dry) along the top of a raised embankment along Telford's BCN New Main Line to the Engine Arm. Water is also supplied by Chasewater and Netherton Reservoirs.

Water pumping

Edgbaston (Rotton Park) Reservoir was an early source of water for the Birmingham Canal Edgbaston Reservoir boat house and paddle gear on dam.jpg
Edgbaston (Rotton Park) Reservoir was an early source of water for the Birmingham Canal

Water was a precious resource, spent each time a lock was emptied as a boat changed level. Steam pumps were employed at many flights of locks to pump water back to a higher level, for example, the Smethwick Engine.

See also

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References