Khlong Saen Saep

Khlong Saen Saep (Thai: คลองแสนแสบ, IPA: [kʰlɔ̄ːŋ.sɛ̌ːn.sɛ̀ːp]) is a canal (khlong) in central Thailand, connecting the Chao Phraya River to Prachinburi Province and Chachoengsao. A portion of the canal is used for public transport by an express boat service in Bangkok. The canal is connected to more than 100 sub-canals, though most of the other canals do not have a regular transport service.

The Saen Saep Canal was built on the order of King Rama III during a conflict between Siam and Annam over Cambodia in order to establish water transport for soldiers and weapons. Construction began in 1837 and was finished in three years. Klong Saen Saep was once filled with lotus plants. King Mongkut in his fourth reign (1851-1868) built Sa Pathum Palace (Lotus Pond Palace) in Siam District. The name of the palace and present-day Pathum Wan District are derived from it.

The Saen Saep starts from Maha Nak Canal (Khlong Maha Nak) (Thai: คลองมหานาค) around Mahakan Fort (Thai: ป้อมมหากาฬ) in Bangkok. In Chachoengsao Province it ends in the Bang Pa Kong River.

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