River Witham (Boston to the Wash)

The River Witham (Boston to the Wash) is a seaway and is part of the River Witham. It runs for 5 miles and 6¾ furlongs through 1 lock from Boston Grand Sluice Lock No 3 (where it joins the River Witham (Lincoln to Boston)) to River Witham - The Wash Junction (where it joins the River Welland (Main Line) and the The Wash).

The maximum dimensions for a boat to be able to travel on the waterway are 78 feet long and 15 feet and 2 inches wide. The maximum headroom is not known. The maximum draught is not known.

It has a junction with the River Witham (Black Sluice Navigation) at River Witham - Black Sluice Navigation Junction.

The navigational authority for this waterway is Canal & River Trust

Relevant publications — Waterway Maps:

Relevant publications — Waterway Guides:


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Boston Grand Sluice Lock No 3
Fydell Street Bridge a few yards 1 lock
St Botolph's Church (the Boston Stump), Boston 2 furlongs 1 lock
St Botolph's Bridge 2½ furlongs 1 lock
Town Bridge, Boston 3 furlongs 1 lock
Boston Ring Road Bridge 4¼ furlongs 1 lock
Railway Swing Bridge (Boston Docks Branch) 7½ furlongs 1 lock
River Witham - Black Sluice Navigation Junction
Junction of the River Witham with the Black Sluice Navigation
1 mile and ¾ furlongs 1 lock
Boston Dock Entrance 1 mile and 4 furlongs 1 lock
Hobhole Drain Outlet
Mouth of River. No junction with the Hobhole Drain
3 miles and 6¾ furlongs 1 lock
River Witham - The Wash Junction
Junction of the River Witham with The Wash
5 miles and 6¾ furlongs 1 lock
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Opening times notice: River Witham, Navigation: Open, Towpath: Open - Lock 4, Boston Lock — from Thursday the 1st of November, 2018 to Friday the 1st of November, 2019.


Two of our tidal locks (Cromwell and Torksey) have the same core hours, which are: 7:00am to 9:00pm in Summer (the earlier of Good Friday or 1st April to 30th September) and 8:00am to 4:00pm in Winter.

Cromwell will operate at all times within these core hours in summer and for 6 hours in winter except at weekends when it will be operated for 8 hours.  

Torksey will operate with the tides and shift patterns will be arranged accordingly to suit these, within the core hours. Typical shifts will be 6 hours in winter and 8 hours in summer. Occasionally we will operate Torksey slightly before 8am or slightly after 4pm in winter if there is a suitable tide and this will be recognised in shift patterns.

Any passage required outside of these hours should be booked at least 5 working days in advance through the office at Newark (0303 040 4040) and is subject to staff availability.

During winter Boston is managed by a booking system, and we ask for 5 working days’ notice, to allow for us to arrange for a lock keeper to be on site and is subject to availability.  Bookings can be arranged by ringing 0303 040 4040 and asking for the Newark Admin Team.  During the Summer, Boston Lock will operate for a maximum of 5 hours on any day, as passage is limited to specific windows of opportunity.  The actual hours of operation each day will be designed to maximise the opportunity to use the lock.

In an emergency, the out of hours call out number 0800 47 999 47 is available.

Actual shift patterns are published at the locks and on the notices section of our website.

Notification sent Tuesday the 23rd of October, 2018


Wikipedia has a page about River Witham

The River Witham is a river almost entirely in the county of Lincolnshire in the east of England. It rises south of Grantham close to South Witham at SK8818, passes Lincoln at SK9771 and at Boston, TF3244, flows into The Haven, a tidal arm of The Wash, near RSPB Frampton Marsh. The name "Witham" seems to be extremely old and of unknown origin. Archaeological and documentary evidence shows the importance of the Witham as a navigation from the Iron Age onwards. From Roman times it was navigable to Lincoln, from where the Fossdyke was constructed to link it to the River Trent. The mouth of the river moved in 1014 following severe flooding, and Boston became important as a port.

From 1142 onwards, sluices were constructed to prevent flooding by the sea, and this culminated in the Great Sluice, which was constructed in 1766. It maintained river levels above Boston, and helped to scour the channel below it. The land through which the lower river runs has been the subject of much land drainage, and many drains are connected to the Witham by flood doors, which block them off if river levels rise rapidly. The river is navigable from Brayford Pool in Lincoln to Boston, with Locks only in Lincoln, at Bardney and at the Grand Sluice. Passage through the Grand Sluice lock is restricted to short periods when the tidal levels are suitable. The river provides access for boaters to the Witham Navigable Drains, to the north of Boston, and to the South Forty-Foot Drain to the south, which was reopened as part of the Fens Waterways Link, a project to link the river to the River Nene near Peterborough. From Brayford Pool, the Fossdyke Navigation still links to the Trent.

Other Wikipedia pages that might relate to River Witham
[Dorothea Weber] [River Witham sword] [Langriville] [Horncastle Canal] [Boston Rowing Marathon] [Tupholme Abbey] [The Haven, Boston] [River Slea] [River Brant]
Information retrieved Tuesday 29 December 2015 at 11:06