I usually cruise along River Drive to get to work and home each day: the geese honk their greetings, the pace is leisurely enough to enjoy, the view across the Missouri River (once you cross north of the 15th St Bridge) is stunning. But I’ve often wondered: how deep is the river in these parts? Near the skatepark, for instance, or Broadwater Bay? 30 feet? 100 feet? Any smart folks out there know the answer?