Highway Patrol officers say they believe the crash happened either late Friday night or early Saturday morning.
Investigators say the motorcyclist did not see a turn in the road, causing the driver to crash into the canal.
The victim is believed to be a white male adult in his early to mid-forties.
Alcohol and drugs are not believed to be a factor in the crash.
A motorcycle helmet was found half a mile south of where the motorcycle was found.
This story will be updated.