 Walt Disney, dismayed at how much land was taken up by the massive excavation, referred to the drydock first as "Joe's Ditch", and then later, "Fowler's Harbor", the name by which it goes by today.However, Disney remained a supporter of the riverboat itself, funding its construction out of his own pocket when corporate funds fell short.On the first "fill-the-river" day, the water that was pumped into the Rivers of America soaked through the riverbed.