Marina - E4 - Orange, Yellow and Blue
To me this is about natural and artificial colours. Something about humanity modifying the environment and making it artificial. So taming the wild Ottawa River and turning it into a marina for weekend pleasure boaters.
The Ottawa River has more rapids and falls than the Colorado. This area is an ancient rift valley and is dotted with granite ridges. The Ottawa River finds its way through these and as a result it s a vry wid river. However some area, like this one, have been tamed