Is it a roof-2?

The intent of the credit is that it doesn't heat up spaces inside the building through sunshine and causing more cooling energy, correct? So, the water is absorbing the solar heat and it doesn't go into the space below. Also the space below is not being cooled at all. Anyway, I could argue that all spaces are a roof, but because of water and tree shading, it should be considered as being excluded much like mechanical equipment on the roof can be excluded. I think Water is also reflective, but not sure if it meets SRI78.

A follow up on if water features are roofs: CIRs dated 2/7/2006 and 5/23/2005 are for LEED NC2.1 and deals with the non-roof credit, but it's feasable that it would also apply to NC2.2 and apply to roofs as well. it says that water feature are excluded from calculations for non-roofs: http://www.usgbc.org/LEED/Credit/CIRDetails.aspx?RequirementID=13 Thought this might help for people that may have the same question. Obviously things are subject to change, but it's certainly something to go by.