Khlong Bangkok Yai is a historic khlong of Bangkok. The current length is 6 km, through various canals as far as it terminates when it meets Khlong Mon near the confluence of three canals, Khlong Chak Phra, Khlong Mon and Khlong Bang Chueak Nang. In total, the canal passes through three districts, namely Bangkok Yai, Thon Buri and Phasi Charoen.