This?
http://www.jdland.com/dc/wasa.cfm
No, if you cross over M street at third street and go straight between the DOT building and the apartment building toward the stadium it's right there. There's little water falls across from it. It's kind of long and not very wide. Ever since the stadium opened I've wondered why it's still there because it's such an ugly empty building surrounded by all new buildings. It's like it's untouchable.