Flotilla - A tow with barges; or for reporting purposes a self-propelled vessel that is carrying a commodity for subsequent sale (i.e. ship, fishing).

Flotilla Draft - The deepest part of the entire flotilla in the river reach including the towboat. Draft minimum and maximum vary according to the lock and dam and stretch of river. Entered in feet and inches.

Flotilla Length - The length of the entire flotilla in the river reach including the towboat even if it extends beyond the barges. The longest measurement should be recorded for an irregular shaped flotilla. Entered in feet.

Flotilla Width - The width of the entire flotilla in the river reach including the towboat even it extends beyond the barges. The widest measurement should be recorded for an irregular shaped flotilla. Entered in feet.