The girl was on the carriageway in the vicinity of a footbridge near Teapot Lane, police say.
Kent County Council says construction work to the Medway towpath in Aylesford will begin in 2027.
South East Water says the new site in Aylesford will supply an extra 20 million litres every day.
The Royal British Veterans Enterprise is part of the government's £50m Valour programme.
Richard Rawnsley MBE and James Butterworth had not seen each other in 23 years.
The driver, in his 40s, is airlifted to hospital but later dies, according to Kent Police.
Visitors to the region's beauty spots are being asked to avoid activities that could cause fires.
South East Water says almost 1,800 properties were impacted across Surrey, Kent and East Sussex.
