This is a simple little project, make a space, and then make two images of that space.
The requirements are: - That the two images are looking THROUGH the space not from above. - That the two images are from different vantage points, of different angles etc. - That the two images communicate the space.
Using the flood wall as foundation, a house or series of houses could march along the canals edge. The posted section elevation begins to describe how a house at this critical juncture could also be used as a structural component for the levee/flood wall.