McKindrick Blue
Player Valuation: £500k
I just watched that Mr Drone video again and actually there isn't much info on the water channel but I defo remember hearing or reading somewhere (not in that Heritage Statement I quoted) about pipes to allow water flow but I thought they would be partially visible at the ends. Can't remember why I think that but I'm sure I have seen/heard more detail about the channel designAny other solution seems more complicated, so I wouldn't be surprised if it remains the same as then.
The channel has been present in designs throughout - though it did for a period have a third access bridge, I'm not sure how much that would affect things: