So, after looking through some past Kings Dominion commercials, I noticed that
park promos for Intimidator 305 clearly showed water features beneath the ride. A Google search revealed that official park concept art indeed included a rather large pond beneath the track.
More than likely, some sort of construction for the ride went over budget and the water was cut, or it was just scrapped because of the maintenance involved with a water feature. Really, it's a shame that the water wasn't kept. Coasters are 100 times better when they go over water (even for just a split second), and there's really no landscaping or anything in Intimidator's ride area. Maybe it would be too much work to have water beneath the ride, but I would love for something like that to be added someday. I wonder if something like that can be added later? It won't for obvious reasons, but one can dream... I know I would love it!