IN ORDER TO to carry out essential maintenance works on Richmond lock, weirs and sluices, it is necessary to hold up the weirs across the low tide period, at Richmond Lock and Weir on the Thames.
Already started
The Draw-Off period has already started and will complete at approximately 16:20 on Friday 19th December 2025.
During this period, river users are reminded that the river between Richmond Lock and Teddington Lock, will not be maintained at the nominal level of 1.72m above Ordnance Datum Newlyn, and it is expected the riverbed will be exposed at low water.
Owners of vessels and structures usually moored between Richmond Lock and Teddington Lock should act in good time, either to move their vessels to more suitable moorings or to assure themselves that the vessel can safely take the ground. Short term moorings are of limited availability in the upper district.
Not to navigate
Boaters are warned not to navigate the Thames were the Draw-Off is taking place as they will most likely be grounded.
Navigating through the weirs and upriver of Richmond Lock must do so with great care, with regard to people working in and around the Lock and weirs. Weirs may be raised and lowered at various times for maintenance purposes, requiring arch closures.
Persons in charge of vessels are reminded to be aware of their wash, as boats and structures may be grounding during the low water.