In Venice, there are 1321 rive that are located throughout the city (1627 in the Venetian Lagoon).
Pie chart of the percentages of each type of Riva in the Venetian Lagoon
Types of Rive
In the Venetian Lagoon, the most common types of rive are types 2, 4, and 5. Combined, they represent approximately 73 percent of all rive in the lagoon.
Bennett, Alexander; Hastings, Samuel; Petry, Stephen; Solomon, Alexander. Boats are Waking Me Crazy: An Analysis of Boat Traffic and Moto Ondoso in the City of Venice. Worcester MA. Worcester Polytechnic Institute.2013