From my analysis of York and the River Foss i developed an intuitive response. I wanted to focus on 3 main points - the condition, shape and tranquility of the river. I (tried to) make a wire model (as seen below) with 3 layers showing a graphical representation of my findings.
The top layer shows the shape of the river
Middle layer shows the tranquility
Bottom layer shows the condition
Areas where undulations in the line are present represent where the tranquility or condition are negative (so flat lines are good!).
I think the model works well as it illustrates the negative and positive areas on the river Foss quite clearly, although photographs can't do it justice. For a sense of scale, the height of the model is 5cm and the width is 22cm.
Here are some more intuitive responses from other Grad Dip students (click to enlarge).
Thats all for now!
Sunny :p