Kent's main boating river will see "15 essential projects" carried out this new year totalling £2m, the Environment Agency has said.
Kent's main boating river will see major works this winter
Projects on the River Medway this winter will include a £400,000 refurbishment of Hampstead Lock.
And a further £400,000 of works will be carried out at Allington to stabilise the eroding bank and improve facilities for boats, engineer Phil Munslow said.
A series of lock closures is planned on the river from January until March.
Mr Munslow said: "We're all set to give Hampstead Lock a new lease of life with a major facelift.
"The lock chamber will undergo a thorough refurbishment and stability works will be carried out on the lock walls. "
He added that the lock would be drained for the duration of the works and a temporary dam would be put in place upstream.
Hampstead Lock will be closed from 7 January until 14 March.
People planning a trip on the Medway this winter are advised to check the Environment Agency website for information about other lock closures on the river.