It's the Easter weekend, what better time to try to reconcile one's mistakes? Yesterday, I messed up on similar water flowing shots by being careless with my tripod - you cannot get sharp pictures at 1/2 second by depressing the shutter release button. DUH. The 2-second self timer release works like a champ, no vibrations.
These were 1-second exposures at f/16, ISO 100 on the D80 - it was early morning and rain had already started.