Water Drip

We have a 2003 Adventurer 35U so may be a different layout than yours. The overflow for the fresh water tank comes out of the top of the tank and down through the floor. Dumps right on top of one of the mufflers, or maybe a catalytic converter, don't remember. Fridge drain goes out the back into a tank behind the vent cover. Low point drain goes through the floor next to water heater. That's the only drains I know of, oh, the drain for the fresh water tank but that's a large hose, over an inch. Only time I've seen water come out of overflow/vent is when filling the tank. When it starts overflowing I know it's full.