A man has died after the mobility scooter he was driving crashed into a creek in Mount Waverley on Saturday night.

Investigators believe the man was riding along Scotchmans Creek Trail sometime on Saturday when the scooter veered over a concrete embankment into the water.

A passer-by discovered the scooter just before 11pm and notified emergency services. Police found the man, who is yet to be identified, dead at the scene.

Police are yet to establish the exact circumstances of the crash and the investigation is ongoing.

A passer-by discovered the buggy. Credit:Courtesy: Twitter @9NewsMelb

Anyone with information or who may have witnessed the crash is urged to contact Crime Stoppers on 1800 333 000.