Wan Mat Saman Aqueduct is the longest canal in Malaysia. The total length is 36 km, connecting Sungai Kedah at Alor Setar to Gurun in the south of Kedah. It was built between 1885 and 1896 at the order of Menteri Besar of Kedah at the time, Wan Mat Saman. The structure enables Kedah to boost its rice production and through it, enables Kedah to earn the nickname "Malaysia's rice bowl".