Grand Sluice Lock L1

Grand Sluice Lock is situated on the River Witham at Boston in Lincolnshire.

The River Witham flows through quiet, flat Lincolnshire countryside, and is very peaceful and remote for much of its length. Marshy fenlands stretch out for miles on either side, giving a real sense of space – and the sunsets can be spectacular.

The mooring site is approximately 170 metres long and provides space for up to 4 vessels moored against pontoons.

Nearest Road

Witham Bank East. From the A52 Sleaford Road, turn on to the A1137 Brothertoft Road.  Turn right at the mini roundabout and follow Fydell Street, proceed over the level crossing, turning left immediately after the bridge into the parking area.

Nearest Station


Nearest Town


Additional Information

The moorings are on rise and fall pontoons. Each berth has electricity provided through Smart Meters where payment is made via an on-line portal. There are two water points servicing the four moorings.

The site is secured by a padlocked gate which requires a standard BW key. There is some car parking (approximately 400m away) for general public use - spaces cannot be reserved for moorers.

Elsan disposal, shower and toilet facilities are located at Grand Sluice Lock (approx. 400m away).

The Environment Agency lowers the level of the River Witham during the winter months for flood alleviation reasons. Craft moored at the site therefore may be grounded during the winter period.

River Witham
Access Restrictions

Tidal constraints apply

Car Parking
Unregulated - Unsecured
Gated Access
BW Key
Security Lighting
Pontoon Type
Floating with Timber Surface
Viewing Arrangements

Site can be viewed from adjacent towpath at any time.

Ryan Cook
07826 894825 or 0303 040 40 40