Making A Moat Point

(I am a tour guide at a medieval castle. The moat to this particular castle was filled by diverting a channel of the river that runs directly past. We’re standing beside a large model of how the entire area looked in 1754 AD.)

Tourist: “So, ma’am, how did they fill the moat?”

Me: “Well as you can see here, a channel was dug to divert the water into the man-made moat.”

Tourist: “So, how did they FILL the moat?”

Me: “Um… With water from the river, flowing into the ditch. The ground could get pretty waterlogged but that worked as extra defense in times of siege.”

Tourist: “Yes, but how did they get the water from the river INTO the moat?”

Me: “Er… They used a bucket chain?”

Tourist: “Ahh, I see. Thanks!”