Green Space and Blue Space

It’s pretty common knowledge that having green space, places to exercise, to get away from the hustle and bustle of life, places to reflect and relax, increases happiness and health in cities.  Today for the first time I read about blue space, that having lakes, ponds, or rivers in a city can also increase health and happiness.  This seems like common sense and appears totally logical.  However, I had never read this before or heard the term blue space.  I want to see if I can find any statistics and further information on this.  I’m interested in city planning and how the space around us can change our state of mind.  I know one of the reasons that I picked the city of Austin to move to was that it had a lot of green space in and surrounding it.  There are, as long as we are not in a drought, plenty of great streams and swimming holes.  Anyway, If you know anything about this I’d love to learn about it.  Please shoot me an email or leave a comment.  In the meantime I will be digging up what I can.