I recently purchased a 1975 16' Ozark trihull. It has what I believe to be a bilge well at the rear of the boat just in front of the transom. This well has the standard rear drain plug, but also has a quarter sized hole in the side that seems to allow water into the boat. The water level usually only rises to the top of the well, but sometimes goes higher. Can anyone tell me what this is ? It's my first boat forgive my ignorance.
