Foxton Locks, Leicestershire, Do it yourself and if you get it wrong, expect to get shouted at! Simply due to the water to float boats is precious. No pumping, just what nature provides, so expect and deal with droughts as and when you are travelling in a boat.
"I never get a water problem on the London Orbital M25, just endless traffic jams....."
King Learie told me that he had to accept the plans, 35 years ago, for the M25, otherwise his linage would be called into question ("So you are from Essex?")