"Black Water" wasn't seen as having hit potential, so it was relegated to the B-side of "Another Park, Another Sunday
." In our interview with Tom Johnston
, the Doobie Brothers frontman explained how the song became an unlikely hit. Said Johnston: "That's a story that could have happened back then, but never would ever ever happen now: Roanoke, Virginia picked that tune up and started playing it in heavy rotation, and somebody in Minneapolis who I guess knew somebody in Roanoke heard the song and decided to follow suit, and it ended up becoming our first #1 single. That was Pat's first single. And oddly enough, it was never looked at as a single by the record company.
I remember when I first heard it was #1, we were in Baton Rouge, Louisiana, and we were just getting ready to go on stage, and then I guess Bruce [their manager Bruce Cohn] must have told us. I think we were already aware of the fact that it was getting airplay, but nobody was really paying a lot of attention. And then all of a sudden it became #1 and we were paying attention. I remember I went in and congratulated Pat backstage, and we've been playing it ever since."