If this is the case, you have two realistic options. Either set up a hydroponic greenhouse and make the effort to haul the water up to it at first and then again as needed (shouldn't be often in an enclosed structure) or move your garden to the water.
Why would one want to move the garden to the water when my home occupies high ground, and the garden would be 1/3 miles away?
The garden would not be in an area to prevent looting.