Bung Boraphet Nakhon Sawan Bung Boraphet This is depending on the water level, it can be a small sized lake, or a large sized swamp, occupying a vast area of approximately 140,000 rai. It is the largest aquaculture source of fresh water fish in Thailand. There is a museum and aquarium with many species of fresh water fish. Travel to Bung Boraphet may be arranged by car, a trip